Data Report
Bulletin / 1991 JAN-MAR
Contributed by CUPWA
Start
Date 1991-01-02
Origin Time 1144 58.38 +- 1.13
Zone 50
Easting 492.60 +- 5.91 Longitude 116.922
Northing 6479.20 +- 18.31 Latitude -31.823
Depth 14.02 +- 27.04
Arrival times = 6 S.D. = 0.105 Seismographs = 3
Nearest recorder = 69.6 km Gap = 183.1 deg Accuracy = A
Effects Code = Imax = 0 Fault =
29 km SE (149 deg) of YORK
WESTERN AUSTRALIA
102 km E ( 82 deg) of PERTH
23 km S (201 deg) of Meckering
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.2
PHASE INFORMATION
DATA USED
BAL e P 79.60 0.10 0.86 79.51 0.09 136.3 351 -30.8 30.8
BAL e S 95.40 0.50 0.56 95.53 -0.13 136.3 351 -23.9 23.9
KLB e P 72.10 0.10 0.90 72.10 -0.00 83.5 72 -30.8 30.8
KLB e S 81.80 0.20 0.70 81.77 0.03 83.5 72 9.7 9.7
MUN i-P 69.90 0.10 1.30 69.98 -0.08 69.6 255 11.6 11.6
MUN e S 78.20 0.20 0.71 78.02 0.18 69.6 255 11.6 11.6
Velocity Ratios
MUN KLB BAL
MUN 1.72 0.00 1.77
0.03 0.00 0.11
KLB 0.00 1.71 1.81
0.00 0.03 0.15
BAL 1.77 1.81 1.74
0.11 0.15 0.03
Start
Date 1991-01-02
Origin Time 1500 36.23 +- 1.66
Zone 50
Easting 549.98 +- 11.84 Longitude 117.525
Northing 6548.18 +- 7.79 Latitude -31.199
Depth 3.43 +- 26.62
Arrival times = 7 S.D. = 0.084 Seismographs = 4
Nearest recorder = 48.9 km Gap = 203.0 deg Accuracy = A
Effects Code = Imax = 0 Fault =
23 km NW (325 deg) of KBN
WESTERN AUSTRALIA
179 km NE ( 63 deg) of PERTH
41 km S (174 deg) of Koorda
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.9
PHASE INFORMATION
DATA USED
BAL e P 53.00 0.10 0.88 52.89 0.11 102.1 309 2.1 2.1
BAL e S 64.30 0.20 0.69 64.45 -0.15 102.1 309 2.1 2.1
KLB w P 44.30 1.00 0.60 44.23 0.07 48.9 152 4.4 4.4
KLB e S 49.70 0.20 0.73 49.78 -0.08 48.9 152 4.4 4.4
MRWA e S 107.30 0.30 0.58 102.99 4.31 264.3 325 -40.3 40.3
MUN i-P 60.40 0.10 1.22 60.41 -0.01 151.8 234 -30.8 30.8
MUN e S 78.20 0.20 0.67 78.18 0.02 151.8 234 1.4 1.4
NWAO e SG 89.70 0.30 0.60 89.67 0.03 193.4 188 1.1 1.1
Velocity Ratios
KLB BAL MUN
KLB 1.67 0.00 1.77
0.26 0.00 0.16
BAL 0.00 1.67 1.88
0.00 0.02 0.11
MUN 1.77 1.88 1.74
0.16 0.11 0.02
Start
Date 1991-01-04
Origin Time 0217 16.08 +- 0.00
Zone 50
Easting 621.02 +- 0.00 Longitude 118.309
Northing 6248.97 +- 0.00 Latitude -33.893
Depth 1.00 +- 0.00 C
Arrival times = 4 S.D. =11.270 Seismographs = 3
Nearest recorder = 141.2 km Gap = 198.1 deg Accuracy = D
Effects Code = Imax = 0 Fault =
10 km E (102 deg) of GNOW
WESTERN AUSTRALIA
315 km SE (134 deg) of PERTH
129 km N ( 18 deg) of ALBANY
29 km E ( 82 deg) of Gnowangerup
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.5
PHASE INFORMATION
DATA USED
COOL i+P 63.00 0.10 1.41 74.35 -11.35 427.5 39 -42.2 42.2
NWAO e PG 40.00 0.50 0.62 39.99 0.01 146.5 316 0.5 0.5
RKG e P 39.00 0.30 0.69 38.98 0.02 141.2 237 -30.8 30.8
RKG e S 55.00 0.50 0.56 55.09 -0.09 141.2 237 0.5 0.5
Velocity Ratios
RKG
RKG 1.70
0.04
Start
Date 1991-01-07
Origin Time 1141 58.81 +- 6.40
Zone 51
Easting 340.34 +- 17.34 Longitude 121.333
Northing 6599.99 +- 77.45 Latitude -30.722
Depth 1.00 +- 91.50 C
Arrival times = 7 S.D. = 0.342 Seismographs = 5
Nearest recorder = 25.3 km Gap = 177.8 deg Accuracy = C
Effects Code = Imax = 0 Fault =
8 km E ( 88 deg) of KLRY
WESTERN AUSTRALIA
539 km E ( 77 deg) of PERTH
31 km NE ( 35 deg) of Coolgardie
14 km W (283 deg) of KALGOORLIE
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.3
PHASE INFORMATION
DATA USED
BAL e S 164.80 1.00 0.44 163.88 0.92 444.2 270 -40.3 40.3
COOL i+P 63.00 0.10 1.41 62.95 0.05 25.3 224 3.4 3.4
COOL e S 66.10 1.00 0.56 65.82 0.28 25.3 224 3.4 3.4
KLB e P 110.20 0.10 0.79 108.22 1.98 354.4 253 -42.2 42.2
KLB e S 148.30 0.10 0.71 144.96 3.34 354.4 253 -40.3 40.3
KLB SG 156.50 0.30 0.81 156.70 -0.20 354.4 253 0.2 0.2
NWAO e SG 185.00 0.50 0.50 185.65 -0.65 459.2 236 0.2 0.2
WARB e P 152.80 0.20 0.64 152.85 -0.05 723.4 47 -42.2 42.2
WARB e S 222.50 0.50 0.48 222.68 -0.18 723.4 47 -40.3 40.3
WARB e SG 257.00 0.30 0.53 258.63 -1.63 723.4 47 0.1 0.1
Velocity Ratios
COOL WARB
COOL 1.74 1.74
0.29 0.02
WARB 1.74 1.74
0.02 0.01
Start
Date 1991-01-07
Origin Time 1459 0.52 +- 41.44
Zone 51
Easting 368.98 +- 174.44 Longitude 121.778
Northing 8274.58 +-1151.42 Latitude -15.603
Depth 5.00 +-1429.56 N
Arrival times = 6 S.D. = 1.978 Seismographs = 3
Nearest recorder = 648.6 km Gap = 298.0 deg Accuracy = C
Effects Code = Imax = 0 Fault =
633 km S (197 deg) of KUG
WESTERN AUSTRALIA
266 km N (350 deg) of BROOME
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.5
PHASE INFORMATION
DATA USED
MBL e P 86.00 0.10 0.74 85.06 0.94 648.6 198 -42.2 42.2
MBL e S 146.00 0.30 0.54 147.90 -1.90 648.6 198 -40.3 40.3
NANU e P 130.00 0.10 0.71 129.43 0.57 1015.6 219 -42.2 42.2
NANU e S 225.00 1.00 0.40 225.14 -0.14 1015.6 219 -40.3 40.3
WARB e P 158.00 0.30 0.56 160.92 -2.92 1275.8 157 -42.2 42.2
WARB e S 283.00 0.50 0.46 279.97 3.03 1275.8 157 -40.3 40.3
Velocity Ratios
MBL NANU WARB
MBL 1.70 1.80 1.90
0.01 0.04 0.02
NANU 1.80 1.73 2.07
0.04 0.01 0.08
WARB 1.90 2.07 1.79
0.02 0.08 0.01
Start
Date 1991-01-08
Origin Time 0331 35.12 +- 90.75
Zone 50
Easting 785.25 +- 223.37 Longitude 119.785
Northing 7440.68 +- 281.57 Latitude -23.118
Depth 1.00 +- 743.63 C
Arrival times = 5 S.D. = 0.220 Seismographs = 3
Nearest recorder = 217.0 km Gap = 159.8 deg Accuracy = D
Effects Code = Imax = 0 Fault =
76 km N ( 4 deg) of MY38
WESTERN AUSTRALIA
336 km S (158 deg) of PORT HEDLAND
30 km N ( 21 deg) of Mt Newman Mine
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign -10.0
PHASE INFORMATION
DATA USED
MBL e P 68.00 0.50 0.60 67.90 0.10 217.0 1 -42.2 42.2
MBL w SG 95.00 1.00 0.48 95.06 -0.06 217.0 1 0.3 0.3
NANU w P 95.00 1.00 0.50 95.38 -0.38 444.3 277 -42.2 42.2
WARB e P 135.40 0.30 0.58 135.58 -0.18 776.5 117 -42.2 42.2
WARB e S 210.30 0.30 0.53 210.16 0.14 776.5 117 -40.3 40.3
Velocity Ratios
WARB
WARB 1.75
0.01
Start
Date 1991-01-08
Origin Time 0436 7.39 +- 0.67
Zone 50
Easting 504.47 +- 4.36 Longitude 117.047
Northing 6613.52 +- 5.94 Latitude -30.611
Depth 5.48 +- 8.95
Arrival times = 9 S.D. = 0.353 Seismographs = 5
Nearest recorder = 32.6 km Gap = 128.9 deg Accuracy = B
Effects Code = Imax = 0 Fault =
6 km NW (316 deg) of CA4
WESTERN AUSTRALIA
187 km NE ( 38 deg) of PERTH
16 km SW (230 deg) of Burakin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.4
PHASE INFORMATION
DATA USED
BAL i-P 12.80 0.10 1.38 12.79 0.01 32.6 270 10.1 10.1
BAL e S 16.50 0.20 0.76 16.53 -0.03 32.6 270 10.1 10.1
COOL e S 100.70 0.30 0.56 101.06 -0.36 393.7 95 -40.3 40.3
KLB e PG 28.50 0.10 0.86 28.33 0.17 128.2 148 2.6 2.6
KLB e S 42.70 0.10 0.78 42.85 -0.15 128.2 148 2.6 2.6
MRWA e P 36.50 0.20 0.73 35.79 0.71 184.7 326 -42.2 42.2
MRWA e SG 57.80 0.20 0.65 58.43 -0.63 184.7 326 1.8 1.8
MUN e P 34.40 0.10 0.84 34.12 0.28 171.3 207 -30.8 30.8
MUN e S 53.80 0.10 0.76 54.19 -0.39 171.3 207 -40.3 40.3
NWAO w P 47.00 1.00 0.52 44.57 2.43 257.3 176 -42.2 42.2
NWAO e S 77.00 0.30 0.59 72.30 4.70 257.3 176 -40.3 40.3
Velocity Ratios
BAL MUN
BAL 1.68 1.73
0.07 0.03
MUN 1.73 1.72
0.03 0.01
Start
Date 1991-01-08
Origin Time 0453 31.12 +- 0.78
Zone 50
Easting 502.17 +- 4.83 Longitude 117.023
Northing 6610.53 +- 5.80 Latitude -30.638
Depth 1.00 +- 14.54 C
Arrival times = 7 S.D. = 0.186 Seismographs = 4
Nearest recorder = 30.5 km Gap = 179.0 deg Accuracy = B
Effects Code = Imax = 0 Fault =
4 km E (100 deg) of BK9
WESTERN AUSTRALIA
183 km NE ( 38 deg) of PERTH
18 km NW (325 deg) of Cadoux
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.9
PHASE INFORMATION
DATA USED
BAL i-P 36.00 0.10 1.39 36.09 -0.09 30.5 276 2.4 2.4
BAL e S 39.60 0.10 0.87 39.54 0.06 30.5 276 2.4 2.4
COOL e S 124.50 0.50 0.51 126.01 -1.51 395.7 95 -40.3 40.3
KLB e P 51.70 0.10 0.86 51.83 -0.13 127.0 146 0.6 0.6
KLB e S 66.20 0.10 0.78 66.19 0.01 127.0 146 0.6 0.6
MRWA e P 60.20 0.10 0.84 60.16 0.04 185.9 327 -42.2 42.2
MRWA e SG 81.10 0.20 0.65 82.48 -1.38 185.9 327 0.4 0.4
MUN e P 58.10 0.10 0.84 57.70 0.40 167.6 207 -30.8 30.8
MUN e S 77.20 0.20 0.66 77.41 -0.21 167.6 207 0.4 0.4
NWAO e S 100.50 0.30 0.59 96.24 4.26 254.5 175 -40.3 40.3
Velocity Ratios
BAL KLB MUN
BAL 1.74 1.69 1.70
0.06 0.03 0.03
KLB 1.69 1.70 1.72
0.03 0.01 0.10
MUN 1.70 1.72 1.71
0.03 0.10 0.01
Start
Date 1991-01-08
Origin Time 0527 7.98 +- 1.26
Zone 50
Easting 504.22 +- 9.62 Longitude 117.044
Northing 6620.31 +- 21.49 Latitude -30.550
Depth 8.95 +- 21.76
Arrival times = 7 S.D. = 0.285 Seismographs = 5
Nearest recorder = 33.0 km Gap = 197.7 deg Accuracy = C
Effects Code = Imax = 0 Fault =
4 km S (186 deg) of CA3
WESTERN AUSTRALIA
192 km NE ( 37 deg) of PERTH
13 km W (255 deg) of Burakin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign -10.0
PHASE INFORMATION
DATA USED
BAL i-P 13.60 0.10 1.38 13.56 0.04 33.0 258 15.7 15.7
COOL e P 61.00 0.30 0.62 61.40 -0.40 394.6 96 -42.2 42.2
COOL e S 101.30 0.20 0.61 101.22 0.08 394.6 96 -40.3 40.3
KLB i-P 29.20 0.10 1.23 29.22 -0.02 134.2 149 -30.8 30.8
KLB e S 43.00 0.10 0.77 45.13 -2.13 134.2 149 3.9 3.9
MUN i-P2 35.40 0.10 0.12 35.25 0.15 177.2 206 -30.8 30.8
MUN e S 54.90 0.10 0.76 55.41 -0.51 177.2 206 -40.3 40.3
NWAO e P 45.20 0.20 0.70 45.59 -0.39 264.1 176 -42.2 42.2
NWAO e S2 77.80 0.10 0.08 77.95 -0.15 264.1 176 -23.9 23.9
Velocity Ratios
COOL
COOL 1.76
0.01
Start
Date 1991-01-08
Origin Time 0545 42.87 +- 0.45
Zone 50
Easting 505.93 +- 2.87 Longitude 117.062
Northing 6617.35 +- 3.90 Latitude -30.576
Depth 5.69 +- 6.28
Arrival times = 10 S.D. = 0.230 Seismographs = 6
Nearest recorder = 34.2 km Gap = 130.5 deg Accuracy = B
Effects Code = Imax = 0 Fault =
7 km S (198 deg) of BK6
WESTERN AUSTRALIA
191 km NE ( 37 deg) of PERTH
12 km SW (239 deg) of Burakin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.9
PHASE INFORMATION
DATA USED
BAL i-P 48.60 0.10 1.37 48.53 0.07 34.2 264 9.9 9.9
COOL e P 96.30 0.20 0.68 96.41 -0.11 392.6 96 -42.2 42.2
COOL PG 107.00 0.50 0.81 106.92 0.08 392.6 96 0.9 0.9
COOL e S 136.40 0.20 0.61 136.27 0.13 392.6 96 -40.3 40.3
KLB i-PG 64.30 0.10 1.23 64.22 0.08 130.8 149 2.6 2.6
KLB e S 78.70 0.10 0.78 79.03 -0.33 130.8 149 2.6 2.6
MRWA PG 72.40 0.20 1.04 72.63 -0.23 182.3 325 1.9 1.9
MRWA SG 94.60 0.20 0.94 93.26 1.34 182.3 325 1.9 1.9
MUN i-P 70.40 0.10 1.20 70.11 0.29 175.4 207 -42.2 42.2
MUN e S 90.00 0.10 0.76 90.49 -0.49 175.4 207 -40.3 40.3
NWAO e P 80.50 0.10 0.81 80.47 0.03 261.0 176 -42.2 42.2
NWAO e S 112.60 0.20 0.63 108.53 4.07 261.0 176 -40.3 40.3
WARB e P 178.30 0.30 0.56 177.20 1.10 1060.8 64 -42.2 42.2
WARB S 279.50 0.50 0.66 276.94 2.56 1060.8 64 -40.3 40.3
Velocity Ratios
MUN COOL
MUN 1.71 1.79
0.01 0.03
COOL 1.79 1.75
0.03 0.01
Start
Date 1991-01-08
Origin Time 0550 16.57 +- 0.76
Zone 50
Easting 503.42 +- 3.66 Longitude 117.036
Northing 6611.30 +- 6.01 Latitude -30.631
Depth 3.19 +- 10.42
Arrival times = 8 S.D. = 0.207 Seismographs = 5
Nearest recorder = 31.6 km Gap = 127.9 deg Accuracy = B
Effects Code = Imax = 0 Fault =
5 km E ( 89 deg) of BK9
WESTERN AUSTRALIA
185 km NE ( 38 deg) of PERTH
18 km SW (226 deg) of Burakin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.4
PHASE INFORMATION
DATA USED
BAL i-P 21.70 0.10 1.38 21.77 -0.07 31.6 274 6.3 6.3
BAL e S 25.30 0.10 0.87 25.37 -0.07 31.6 274 6.3 6.3
COOL w S 110.00 1.00 0.45 110.83 -0.83 394.5 95 -40.3 40.3
KLB i-P 37.30 0.10 1.23 37.29 0.01 126.9 147 -30.8 30.8
KLB e S 51.80 0.10 0.78 51.65 0.15 126.9 147 1.6 1.6
MRWA e P 45.70 0.10 0.84 45.38 0.32 186.0 327 -42.2 42.2
MRWA SG 66.60 0.20 0.94 67.95 -1.35 186.0 327 1.1 1.1
MUN e P 43.20 0.10 0.84 43.15 0.05 168.8 207 -30.8 30.8
MUN e S 63.10 0.10 0.76 63.13 -0.03 168.8 207 -23.9 23.9
NWAO e S 86.00 0.20 0.64 81.44 4.56 255.1 175 -40.3 40.3
Velocity Ratios
BAL KLB MUN
BAL 1.70 1.70 1.76
0.05 0.04 0.03
KLB 1.70 1.70 1.92
0.04 0.01 0.10
MUN 1.76 1.92 1.75
0.03 0.10 0.01
Start
Date 1991-01-09
Origin Time 1022 38.36 +- 3.95
Zone 51
Easting 593.27 +- 15.89 Longitude 123.878
Northing 8082.37 +- 20.54 Latitude -17.342
Depth 5.00 +- 32.55 N
Arrival times = 11 S.D. = 0.866 Seismographs = 6
Nearest recorder = 551.5 km Gap = 183.1 deg Accuracy = C
Effects Code = Imax = 0 Fault =
550 km W (250 deg) of KNA
WESTERN AUSTRALIA
26 km E ( 95 deg) of Derby
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML? 3.7
PHASE INFORMATION
DATA USED
FORR i-P 230.40 0.10 1.00 232.05 -1.65 1551.0 164 -42.2 42.2
FORR w S 373.00 2.00 0.35 375.77 -2.77 1551.0 164 -40.3 40.3
KNA e P 111.40 0.20 0.66 111.16 0.24 551.5 71 -42.2 42.2
KNA e S 163.00 0.30 0.54 165.29 -2.29 551.5 71 -40.3 40.3
KNA e SG 191.00 0.50 0.49 190.73 0.27 551.5 71 0.5 0.5
MBL e P 116.70 0.20 0.65 116.95 -0.25 599.4 224 -42.2 42.2
MBL e S 174.00 0.50 0.49 175.37 -1.37 599.4 224 -40.3 40.3
MEKA w P 186.00 2.00 0.39 185.45 0.55 1165.6 207 -42.2 42.2
MEKA e S 292.30 0.30 0.51 294.63 -2.33 1165.6 207 -40.3 40.3
MRWA e P 229.70 0.30 0.56 231.12 -1.42 1543.5 209 -42.2 42.2
MRWA e S 369.40 0.50 0.46 374.15 -4.75 1543.5 209 -40.3 40.3
MTN e P 157.30 0.20 0.62 156.61 0.69 927.5 58 -42.2 42.2
MTN e S 244.90 0.30 0.52 244.43 0.47 927.5 58 -40.3 40.3
NANU e P 171.50 0.20 0.61 171.51 -0.01 1050.7 235 -42.2 42.2
NANU e S 267.00 0.50 0.46 270.36 -3.36 1050.7 235 -40.3 40.3
NWAO e P 265.00 0.30 0.50 268.39 -3.39 1851.8 199 -42.2 42.2
NWAO S 431.00 0.50 0.56 439.04 -8.04 1851.8 199 -40.3 40.3
WARB i+P 168.30 0.10 1.01 167.85 0.45 1020.2 164 -42.2 42.2
WARB e S 263.70 0.50 0.46 264.00 -0.30 1020.2 164 -40.3 40.3
Velocity Ratios
KNA MBL MTN WARB
KNA 1.71 0.00 1.78 1.77
0.01 0.00 0.03 0.02
MBL 0.00 1.73 1.75 1.74
0.00 0.01 0.04 0.03
MTN 1.78 1.75 1.74 1.71
0.03 0.04 0.01 0.12
WARB 1.77 1.74 1.71 1.73
0.02 0.03 0.12 0.01
Start
Date 1991-01-11
Origin Time 0746 58.13 +- 1.71
Zone 50
Easting 519.74 +- 5.41 Longitude 117.209
Northing 6445.71 +- 4.09 Latitude -32.125
Depth 18.97 +- 20.42
Arrival times = 7 S.D. = 0.122 Seismographs = 4
Nearest recorder = 78.8 km Gap = 137.1 deg Accuracy = B
Effects Code = Imax = 0 Fault =
21 km SW (234 deg) of QUAI
WESTERN AUSTRALIA
130 km E ( 99 deg) of PERTH
26 km E ( 91 deg) of Beverley
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.8
PHASE INFORMATION
DATA USED
BAL e SG 106.80 0.30 0.61 106.74 0.06 174.9 344 6.3 6.3
KLB e P 70.60 0.10 0.90 70.78 -0.18 78.8 41 -30.8 30.8
KLB e S 80.30 0.20 0.71 80.19 0.11 78.8 41 -23.9 23.9
MUN e P 73.20 0.10 0.89 73.18 0.02 95.9 279 -30.8 30.8
MUN e S 84.50 0.20 0.69 84.51 -0.01 95.9 279 -23.9 23.9
NWAO i-P 72.30 0.10 1.27 72.20 0.10 88.9 178 -30.8 30.8
NWAO e S 82.60 0.30 0.64 82.75 -0.15 88.9 178 -23.9 23.9
Velocity Ratios
KLB NWAO MUN
KLB 1.78 0.00 0.00
0.03 0.00 0.00
NWAO 0.00 1.73 0.00
0.00 0.03 0.00
MUN 0.00 0.00 1.75
0.00 0.00 0.03
Start
Date 1991-01-11
Origin Time 2330 58.83 +- 12.56
Zone 49
Easting 523.97 +- 398.44 Longitude 111.274
Northing 5763.39 +- 470.85 Latitude -38.277
Depth 5.00 +- 783.28 N
Arrival times = 8 S.D. = 0.500 Seismographs = 5
Nearest recorder = 659.1 km Gap = 331.8 deg Accuracy = D
Effects Code = Imax = 0 Fault =
658 km SW (229 deg) of RKG
816 km SW (209 deg) of PERTH
Place names undefined for this area
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 3.1
PHASE INFORMATION
DATA USED
BAL e P 184.30 0.10 0.71 184.29 0.01 986.9 31 -42.2 42.2
BAL e S 280.40 0.20 0.56 277.44 2.96 986.9 31 -40.3 40.3
MRWA e P 197.00 0.30 0.56 197.50 -0.50 1096.2 24 -42.2 42.2
MRWA e S 301.00 0.50 0.46 300.44 0.56 1096.2 24 -40.3 40.3
MUN e P 165.00 0.30 0.58 165.45 -0.45 831.2 34 -42.2 42.2
MUN e S 244.70 0.30 0.52 244.65 0.05 831.2 34 -40.3 40.3
NWAO w P 164.00 2.00 0.41 162.04 1.96 803.0 43 -42.2 42.2
NWAO e S 239.00 0.50 0.47 238.70 0.30 803.0 43 -40.3 40.3
RKG e P 145.50 0.30 0.59 144.64 0.86 659.1 52 -42.2 42.2
RKG S 208.00 0.50 0.69 208.41 -0.41 659.1 52 -40.3 40.3
Velocity Ratios
RKG MUN MRWA
RKG 1.72 1.88 1.81
0.01 0.10 0.04
MUN 1.88 1.75 1.76
0.10 0.01 0.06
MRWA 1.81 1.76 1.75
0.04 0.06 0.01
Start
Date 1991-01-12
Origin Time 1703 48.84 +- 1.09
Zone 50
Easting 502.58 +- 4.62 Longitude 117.027
Northing 6612.93 +- 5.37 Latitude -30.616
Depth 0.12 +- 12.25
Arrival times = 9 S.D. = 0.307 Seismographs = 5
Nearest recorder = 30.7 km Gap = 180.3 deg Accuracy = A
Effects Code = Imax = 0 Fault =
4 km E ( 69 deg) of BK9
WESTERN AUSTRALIA
186 km NE ( 37 deg) of PERTH
17 km SW (232 deg) of Burakin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.8
PHASE INFORMATION
DATA USED
BAL e P 53.80 0.10 0.97 53.85 -0.05 30.7 271 0.8 0.8
BAL e S 57.40 0.20 0.76 57.32 0.08 30.7 271 0.8 0.8
KLB e P 70.00 0.20 0.75 69.84 0.16 128.8 147 0.2 0.2
KLB e S 84.00 0.40 0.59 84.41 -0.41 128.8 147 0.2 0.2
MRWA e P 78.00 0.10 0.84 77.76 0.24 184.1 327 -42.2 42.2
MRWA e S 98.80 0.20 0.66 99.31 -0.51 184.1 327 -40.3 40.3
MUN e P 76.20 0.20 0.73 75.82 0.38 169.9 206 -30.8 30.8
MUN e S 95.40 0.30 0.61 95.77 -0.37 169.9 206 0.1 0.1
NWAO e S2 118.20 0.20 0.35 117.97 0.23 256.8 175 -23.9 23.9
Velocity Ratios
BAL KLB MUN MRWA
BAL 1.73 1.64 1.70 1.71
0.08 0.07 0.05 0.03
KLB 1.64 1.66 0.00 1.85
0.07 0.03 0.00 0.15
MUN 1.70 0.00 1.70 0.00
0.05 0.00 0.02 0.00
MRWA 1.71 1.85 0.00 1.71
0.03 0.15 0.00 0.01
Start
Date 1991-01-12
Origin Time 2055 50.53 +- 0.85
Zone 50
Easting 509.31 +- 7.73 Longitude 117.097
Northing 6593.97 +- 6.74 Latitude -30.787
Depth 1.00 +- 23.36 C
Arrival times = 7 S.D. = 0.150 Seismographs = 4
Nearest recorder = 42.4 km Gap = 206.9 deg Accuracy = A
Effects Code = Imax = 0 Fault =
3 km W (260 deg) of CAR
WESTERN AUSTRALIA
175 km NE ( 43 deg) of PERTH
4 km SW (239 deg) of Cadoux
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.9
PHASE INFORMATION
DATA USED
BAL i P 57.50 0.10 1.35 57.45 0.05 42.4 298 1.8 1.8
BAL e S 62.00 0.30 0.68 62.25 -0.25 42.4 298 1.8 1.8
KLB e P 68.40 0.10 0.88 68.35 0.05 109.3 145 0.7 0.7
KLB e S 80.50 0.30 0.63 80.71 -0.21 109.3 145 0.7 0.7
MRWA e P 83.00 0.10 0.83 81.72 1.28 203.8 328 -42.2 42.2
MRWA e S 106.00 0.30 0.60 104.97 1.03 203.8 328 -40.3 40.3
MUN e P 75.80 0.30 0.68 75.60 0.20 156.8 212 -30.8 30.8
MUN e S 93.80 0.30 0.61 93.83 -0.03 156.8 212 0.5 0.5
NWAO e S2 114.60 0.30 0.33 114.67 -0.07 237.5 176 -23.9 23.9
Velocity Ratios
BAL KLB MUN
BAL 1.65 1.70 1.74
0.07 0.09 0.07
KLB 1.70 1.68 1.80
0.09 0.03 0.19
MUN 1.74 1.80 1.71
0.07 0.19 0.03
Start
Date 1991-01-19
Origin Time 0221 24.90 +- 2.66
Zone 50
Easting 499.03 +- 15.31 Longitude 116.990
Northing 6491.75 +- 23.19 Latitude -31.710
Depth 4.09 +- 82.08
Arrival times = 6 S.D. = 0.070 Seismographs = 3
Nearest recorder = 74.2 km Gap = 167.7 deg Accuracy = B
Effects Code = Imax = 0 Fault =
25 km SE (120 deg) of YORK
WESTERN AUSTRALIA
111 km E ( 76 deg) of PERTH
9 km S (192 deg) of Meckering
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.0
PHASE INFORMATION
DATA USED
BAL e P 45.30 0.10 0.87 45.29 0.01 125.2 347 -30.8 30.8
BAL e S 59.50 0.30 0.63 59.50 0.00 125.2 347 2.0 2.0
KLB w P 37.00 1.00 0.58 37.02 -0.02 74.2 80 3.4 3.4
KLB w S 45.50 1.00 0.52 45.43 0.07 74.2 80 3.4 3.4
MRWA P 68.00 1.00 0.72 66.44 1.56 292.1 340 -42.2 42.2
MRWA S 101.50 0.20 0.90 97.40 4.10 292.1 340 -40.3 40.3
MUN e P 37.80 0.20 0.78 37.92 -0.12 79.7 247 3.1 3.1
MUN i S 47.00 0.10 1.16 46.96 0.04 79.7 247 3.1 3.1
Velocity Ratios
KLB MUN BAL
KLB 1.70 0.00 0.00
0.24 0.00 0.00
MUN 0.00 1.71 1.67
0.00 0.03 0.13
BAL 0.00 1.67 1.70
0.00 0.13 0.02
Start
Date 1991-01-21
Origin Time 2137 21.20 +- 0.00
Zone 50
Easting 611.91 +- 0.00 Longitude 118.209
Northing 6260.78 +- 0.00 Latitude -33.787
Depth 1.00 +- 0.00 C
Arrival times = 4 S.D. = 1.114 Seismographs = 3
Nearest recorder = 131.7 km Gap = 274.8 deg Accuracy = D
Effects Code = Imax = 0 Fault =
8 km NE ( 22 deg) of GNOC
WESTERN AUSTRALIA
300 km SE (133 deg) of PERTH
138 km N ( 13 deg) of ALBANY
25 km NE ( 51 deg) of Gnowangerup
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.9
PHASE INFORMATION
DATA USED
MUN SG 96.00 0.10 1.04 96.97 -0.97 274.3 316 0.3 0.3
NWAO e P 42.70 0.10 0.86 42.69 0.01 131.7 316 0.6 0.6
NWAO e S 59.30 0.10 0.78 57.58 1.72 131.7 316 0.6 0.6
RKG w S 60.00 0.10 0.79 60.01 -0.01 140.5 231 0.5 0.5
Velocity Ratios
NWAO
NWAO 1.77
0.01
Start
Date 1991-01-22
Origin Time 0044 12.53 +- 0.00
Zone 53
Easting 362.50 +- 0.00 Longitude 133.689
Northing 7839.97 +- 0.00 Latitude -19.530
Depth 5.00 +- 0.00 N
Arrival times = 4 S.D. = 2.233 Seismographs = 2
Nearest recorder = 1372.9 km Gap = 302.7 deg Accuracy = D
Effects Code = Imax = 0 Fault =
16 km SW (236 deg) of TCAY
NORTHERN TERRITORY
841 km S (159 deg) of DARWIN
53 km W (284 deg) of TENNANT CREEK
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML? 4.0
PHASE INFORMATION
DATA USED
COOL e P 230.00 0.50 0.51 235.63 -5.63 1794.2 222 -42.2 42.2
COOL e S 400.00 0.50 0.46 401.14 -1.14 1794.2 222 -40.3 40.3
FORR e P 182.50 0.50 0.51 184.69 -2.19 1372.9 203 -42.2 42.2
FORR e S 314.00 0.50 0.46 312.45 1.55 1372.9 203 -40.3 40.3
MBL e P 199.00 0.50 0.51 196.81 2.19 1473.5 260 -42.2 42.2
MBL e S 332.00 0.50 0.46 333.55 -1.55 1473.5 260 -40.3 40.3
MUN e P 283.00 1.00 0.44 290.14 -7.14 2239.5 228 -50.0 49.6
Velocity Ratios
FORR MBL
FORR 1.77 1.09
0.01 0.13
MBL 1.09 1.71
0.13 0.01
Start
Date 1991-01-24
Origin Time 1456 3.47 +- 57.23
Zone 53
Easting 448.66 +-2274.55 Longitude 134.510
Northing 7808.99 +- 166.95 Latitude -19.814
Depth 5.00 +-2210.21 N
Arrival times = 6 S.D. = 2.278 Seismographs = 4
Nearest recorder = 758.1 km Gap = 279.1 deg Accuracy = D
Effects Code = Imax = 0 Fault =
13 km E (112 deg) of WB0
NORTHERN TERRITORY
905 km SE (155 deg) of DARWIN
39 km SE (118 deg) of TENNANT CREEK
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign -10.0
PHASE INFORMATION
DATA USED
BAL w P 262.00 1.00 0.45 272.80 -10.80 2170.6 232 -44.9 45.6
BAL w S 414.00 2.00 0.35 476.45 -62.45 2170.6 232 -41.5 41.4
COOL e P 228.00 0.50 0.51 230.94 -2.94 1830.4 224 -42.2 42.2
COOL e S 375.00 1.00 0.40 399.68 -24.68 1830.4 224 -40.3 40.3
KNA e P 102.00 1.00 0.46 101.25 0.75 758.1 305 -42.2 42.2
KNA S 174.00 1.00 0.59 173.89 0.11 758.1 305 -40.3 40.3
MBL w P 194.00 3.00 0.36 197.44 -3.44 1553.6 261 -42.2 42.2
MUN e P 278.00 0.50 0.51 285.31 -7.31 2279.3 229 -51.7 51.3
MUN e S 427.00 0.50 0.46 504.38 -77.38 2279.3 229 -45.9 47.6
NWAO e P 276.00 0.50 0.51 283.14 -7.14 2258.8 226 -50.7 50.3
NWAO e S 425.00 0.50 0.46 499.28 -74.28 2258.8 226 -45.3 46.8
WARB S-P 99.00 2.00 0.46 100.95 -1.95 1073.8 227 0.0 0.0
WARB e P 141.90 0.20 0.61 139.45 2.45 1073.8 227 -42.2 42.2
WARB e S 241.00 1.00 0.40 240.40 0.60 1073.8 227 -40.3 40.3
Velocity Ratios
KNA WARB
KNA 1.73 1.68
0.03 0.10
WARB 1.68 1.72
0.10 0.01
Start
Date 1991-01-26
Origin Time 0746 18.55 +- 0.00
Zone 50
Easting 416.36 +- 0.00 Longitude 116.110
Northing 6407.99 +- 0.00 Latitude -32.462
Depth 5.00 +- 0.00 N
Arrival times = 4 S.D. = 1.094 Seismographs = 3
Nearest recorder = 54.4 km Gap = 311.2 deg Accuracy = B
Effects Code = Imax = 0 Fault =
54 km S (189 deg) of MUN
WESTERN AUSTRALIA
62 km SE (157 deg) of PERTH
15 km S (184 deg) of Jarrahdale
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign -10.0
PHASE INFORMATION
DATA USED
BAL S-P 25.00 1.00 0.74 23.83 1.17 213.3 15 0.0 0.0
KLB S-P 21.00 1.00 0.75 21.14 -0.14 183.3 58 0.0 0.0
MUN e P 28.30 0.30 0.74 27.47 0.83 54.4 9 5.5 5.5
MUN e S 32.30 0.50 0.61 33.65 -1.35 54.4 9 5.5 5.5
Velocity Ratios
MUN
MUN 1.41
0.10
Start
Date 1991-01-27
Origin Time 1139 2.54 +- 0.37
Zone 50
Easting 497.98 +- 1.95 Longitude 116.979
Northing 6492.40 +- 2.54 Latitude -31.704
Depth 0.29 +- 22.55
Arrival times = 8 S.D. = 0.054 Seismographs = 4
Nearest recorder = 75.1 km Gap = 100.9 deg Accuracy = A
Effects Code = Imax = 0 Fault =
24 km SE (120 deg) of YORK
WESTERN AUSTRALIA
110 km E ( 76 deg) of PERTH
9 km S (200 deg) of Meckering
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.6
PHASE INFORMATION
DATA USED
BAL i P 22.90 0.10 1.24 22.82 0.08 124.3 347 0.3 0.3
BAL i S 36.80 0.10 1.11 36.88 -0.08 124.3 347 0.3 0.3
KLB i P 14.80 0.10 1.29 14.80 0.00 75.1 80 0.4 0.4
KLB i S 23.30 0.10 1.16 23.29 0.01 75.1 80 0.4 0.4
MRWA e S2 80.00 0.50 0.29 80.33 -0.33 291.2 340 -23.9 23.9
MUN i P 15.40 0.10 1.29 15.43 -0.03 79.0 247 0.4 0.4
MUN i S 24.40 0.10 1.16 24.37 0.03 79.0 247 0.4 0.4
NWAO e P 25.00 0.50 0.62 25.00 -0.00 137.7 170 -30.8 30.8
NWAO e S 40.50 0.20 0.67 40.57 -0.07 137.7 170 0.2 0.2
Velocity Ratios
KLB MUN BAL NWAO
KLB 1.69 0.00 1.67 1.69
0.02 0.00 0.07 0.14
MUN 0.00 1.70 1.65 1.68
0.00 0.02 0.07 0.15
BAL 1.67 1.65 1.68 0.00
0.07 0.07 0.01 0.00
NWAO 1.69 1.68 0.00 1.69
0.14 0.15 0.00 0.05
Start
Date 1991-01-28
Origin Time 1207 36.88 +- 0.00
Zone 50
Easting 704.71 +- 0.00 Longitude 118.935
Northing 7994.86 +- 0.00 Latitude -18.125
Depth 5.00 +- 0.00 N
Arrival times = 4 S.D. = 0.186 Seismographs = 2
Nearest recorder = 349.0 km Gap = 309.1 deg Accuracy = D
Effects Code = Imax = 0 Fault =
278 km N ( 4 deg) of RP02
WESTERN AUSTRALIA
364 km NE ( 40 deg) of Dampier
244 km N ( 9 deg) of PORT HEDLAND
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.3
PHASE INFORMATION
DATA USED
MBL e P 85.30 0.10 0.79 85.20 0.10 349.0 164 -42.2 42.2
MBL e S 121.00 1.00 0.45 121.18 -0.18 349.0 164 -40.3 40.3
NANU e P 116.10 0.30 0.60 116.31 -0.21 606.4 215 -42.2 42.2
NANU e S 175.50 1.00 0.42 175.35 0.15 606.4 215 -40.3 40.3
Velocity Ratios
MBL NANU
MBL 1.74 1.77
0.02 0.09
NANU 1.77 1.75
0.09 0.02
Start
Date 1991-01-28
Origin Time 1347 7.05 +- 1.29
Zone 50
Easting 613.58 +- 9.18 Longitude 118.194
Northing 6532.89 +- 20.46 Latitude -31.333
Depth 5.00 +- 35.02 N
Arrival times = 6 S.D. = 0.023 Seismographs = 4
Nearest recorder = 50.2 km Gap = 154.2 deg Accuracy = B
Effects Code = Imax = 0 Fault =
46 km S (181 deg) of MUKI
WESTERN AUSTRALIA
233 km E ( 74 deg) of PERTH
18 km NW (336 deg) of Merredin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.8
PHASE INFORMATION
DATA USED
BAL e P 32.70 0.20 0.74 32.69 0.01 163.2 299 -30.8 30.8
BAL e S 52.00 0.20 0.66 52.00 0.00 163.2 299 -23.9 23.9
COOL e SG 86.00 0.50 0.45 86.07 -0.07 286.0 80 1.1 1.1
KLB e P 15.30 0.10 0.93 15.29 0.01 50.2 234 6.0 6.0
KLB e S 21.00 0.20 0.73 21.00 0.00 50.2 234 6.0 6.0
MRWA w S 85.00 2.00 0.42 84.32 0.68 315.6 317 -40.3 40.3
MUN e P 37.50 0.20 0.72 37.51 -0.01 201.4 248 -42.2 42.2
MUN e S 62.20 0.20 0.65 60.27 1.93 201.4 248 -40.3 40.3
NWAO e S 62.30 0.20 0.65 59.68 2.62 198.6 206 -40.3 40.3
Velocity Ratios
KLB BAL
KLB 1.69 1.78
0.05 0.05
BAL 1.78 1.75
0.05 0.02
Start
Date 1991-02-02
Origin Time 2342 9.01 +- 2.70
Zone 51
Easting 152.73 +- 8.19 Longitude 119.397
Northing 6665.58 +- 10.47 Latitude -30.092
Depth 3.95 +- 24.16
Arrival times = 10 S.D. = 0.459 Seismographs = 5
Nearest recorder = 189.5 km Gap = 94.3 deg Accuracy = B
Effects Code = Imax = 0 Fault =
94 km NE ( 56 deg) of BR3
WESTERN AUSTRALIA
396 km NE ( 60 deg) of PERTH
164 km W (254 deg) of Menzies
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.5
PHASE INFORMATION
DATA USED
BAL e P 49.00 1.00 0.51 47.35 1.65 265.6 256 -42.2 42.2
BAL e S 74.50 1.00 0.46 75.94 -1.44 265.6 256 -40.3 40.3
COOL e P 38.00 0.30 0.67 38.17 -0.17 189.5 118 -42.2 42.2
COOL e S 59.90 0.20 0.65 59.95 -0.05 189.5 118 -40.3 40.3
MEKA e P 67.00 1.00 0.49 63.04 3.96 395.1 347 -42.2 42.2
MEKA e S 103.00 1.00 0.44 103.25 -0.25 395.1 347 -40.3 40.3
MEKA e SG 116.00 1.00 0.44 118.16 -2.16 395.1 347 0.6 0.6
MRWA w P 57.00 1.00 0.51 56.87 0.13 344.3 285 -42.2 42.2
MRWA e PG 65.30 0.20 0.69 65.17 0.13 344.3 285 0.7 0.7
MRWA e S 92.40 0.30 0.57 92.51 -0.11 344.3 285 -40.3 40.3
MUN w P 52.00 2.00 0.44 60.02 -8.02 370.4 234 -42.2 42.2
MUN w S 96.00 2.00 0.40 97.99 -1.99 370.4 234 -40.3 40.3
MUN e SG 110.50 0.30 0.57 111.32 -0.82 370.4 234 0.7 0.7
NWAO e PG 70.00 2.00 0.43 70.40 -0.40 376.3 212 0.6 0.6
NWAO e SG 113.30 0.30 0.57 112.97 0.33 376.3 212 0.6 0.6
WARB e P 115.00 1.00 0.46 115.98 -0.98 833.0 60 -42.2 42.2
WARB e S 196.50 0.50 0.47 195.42 1.08 833.0 60 -40.3 40.3
Velocity Ratios
COOL MRWA WARB
COOL 1.76 1.71 1.77
0.03 0.15 0.04
MRWA 1.71 1.74 1.79
0.15 0.04 0.08
WARB 1.77 1.79 1.77
0.04 0.08 0.02
Start
Date 1991-02-03
Origin Time 0039 36.30 +- 5.68
Zone 50
Easting 656.12 +- 16.14 Longitude 118.677
Northing 6314.33 +- 11.76 Latitude -33.299
Depth 1.00 +- 31.37 C
Arrival times = 8 S.D. = 0.556 Seismographs = 5
Nearest recorder = 140.9 km Gap = 185.4 deg Accuracy = C
Effects Code = Imax = 0 Fault =
24 km N ( 13 deg) of PIN
WESTERN AUSTRALIA
305 km SE (120 deg) of PERTH
203 km N ( 22 deg) of ALBANY
29 km SE (139 deg) of Lake Grace
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.1
PHASE INFORMATION
DATA USED
COOL w P 88.00 1.00 0.51 85.83 2.17 355.2 41 -42.2 42.2
COOL e S 123.00 1.00 0.45 122.66 0.34 355.2 41 -40.3 40.3
KLB e P 68.00 0.10 0.83 68.00 -0.00 208.0 335 -42.2 42.2
KLB e S 92.00 0.10 0.74 91.63 0.37 208.0 335 -40.3 40.3
MUN w P 78.00 1.00 0.52 75.98 2.02 273.9 301 -42.2 42.2
MUN e S 105.50 1.00 0.46 105.51 -0.01 273.9 301 -40.3 40.3
NWAO e P 58.40 0.10 0.86 59.15 -0.75 140.9 286 -30.8 30.8
NWAO e S 75.50 0.30 0.62 75.22 0.28 140.9 286 0.5 0.5
RKG e P 67.70 0.20 0.72 68.10 -0.40 208.8 226 -42.2 42.2
RKG e S 92.70 0.20 0.65 91.81 0.89 208.8 226 -40.3 40.3
Velocity Ratios
NWAO KLB RKG
NWAO 1.77 1.72 1.85
0.02 0.08 0.12
KLB 1.72 1.76 0.00
0.08 0.01 0.00
RKG 1.85 0.00 1.80
0.12 0.00 0.02
Start
Date 1991-02-04
Origin Time 0827 34.33 +- 2.91
Zone 50
Easting 364.25 +- 23.36 Longitude 115.712
Northing 7929.93 +- 30.77 Latitude -18.718
Depth 5.00 +- 45.94 N
Arrival times = 14 S.D. = 0.518 Seismographs = 9
Nearest recorder = 424.3 km Gap = 255.7 deg Accuracy = D
Effects Code = Imax = 0 Fault =
313 km NW (319 deg) of RP01
WESTERN AUSTRALIA
348 km NW (300 deg) of PORT HEDLAND
239 km NW (334 deg) of Dampier
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 3.7
PHASE INFORMATION
DATA USED
BAL e P 201.00 0.20 0.61 200.11 0.89 1320.4 175 -42.2 42.2
BAL e S 323.50 0.20 0.55 323.14 0.36 1320.4 175 -40.3 40.3
COOL e P 216.00 0.30 0.56 216.38 -0.38 1454.8 159 -42.2 42.2
COOL e S 349.00 0.30 0.51 351.47 -2.47 1454.8 159 -40.3 40.3
KLB e P 215.00 1.00 0.44 214.62 0.38 1440.4 172 -42.2 42.2
KLB e S 348.00 0.50 0.46 348.41 -0.41 1440.4 172 -40.3 40.3
KNA e S 348.00 1.00 0.40 347.07 0.93 1434.2 78 -40.3 40.3
MBL i-P 102.00 0.10 1.08 101.99 0.01 509.0 122 -42.2 42.2
MBL e S 152.50 0.50 0.50 152.31 0.19 509.0 122 -40.3 40.3
MEKA e P 153.60 0.30 0.57 151.83 1.77 921.0 162 -42.2 42.2
MEKA e S 229.00 0.50 0.47 239.09 -10.09 921.0 162 -40.3 40.3
MRWA e P 180.00 0.30 0.56 181.09 -1.09 1163.1 178 -42.2 42.2
MRWA e S 287.30 0.20 0.55 290.03 -2.73 1163.1 178 -40.3 40.3
MUN e P 218.50 0.50 0.51 218.13 0.37 1469.5 178 -42.2 42.2
MUN e S 354.00 0.50 0.46 354.52 -0.52 1469.5 178 -40.3 40.3
NANU i+P 91.90 0.10 1.10 91.72 0.18 424.3 182 -42.2 42.2
NANU e S 133.00 1.00 0.44 134.44 -1.44 424.3 182 -40.3 40.3
NWAO w P 232.00 2.00 0.39 231.61 0.39 1581.0 174 -42.2 42.2
NWAO e S 376.50 1.50 0.37 378.00 -1.50 1581.0 174 -40.3 40.3
WARB i-P 209.00 0.10 1.00 209.66 -0.66 1399.2 128 -42.2 42.2
WARB e S 340.50 0.50 0.46 339.76 0.74 1399.2 128 -40.3 40.3
Velocity Ratios
MBL BAL WARB KLB MUN
MBL 1.75 1.73 1.76 1.73 1.73
0.01 0.01 0.01 0.03 0.02
BAL 1.73 1.73 2.12 0.00 1.74
0.01 0.00 0.17 0.00 0.11
WARB 1.76 2.12 1.75 0.00 0.00
0.01 0.17 0.00 0.00 0.00
KLB 1.73 0.00 0.00 1.74 0.00
0.03 0.00 0.00 0.01 0.00
MUN 1.73 1.74 0.00 0.00 1.74
0.02 0.11 0.00 0.00 0.01
Start
Date 1991-02-04
Origin Time 1027 25.89 +- 13.17
Zone 50
Easting 436.02 +- 61.50 Longitude 116.312
Northing 6299.15 +- 25.66 Latitude -33.445
Depth 5.00 +- 105.95 N
Arrival times = 6 S.D. = 0.720 Seismographs = 3
Nearest recorder = 103.4 km Gap = 203.6 deg Accuracy = D
Effects Code = Imax = 0 Fault =
66 km W (284 deg) of BEAU
WESTERN AUSTRALIA
171 km S (165 deg) of PERTH
145 km NE ( 48 deg) of AUGUSTA
17 km SE (119 deg) of Collie
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign -10.0
PHASE INFORMATION
DATA USED
KLB w P 63.00 2.00 0.46 62.18 0.82 246.4 33 -40.9 40.9
KLB e S 93.00 1.00 0.46 89.52 3.48 246.4 33 -39.8 39.8
MUN e P 51.40 0.10 0.85 51.42 -0.02 162.9 356 -31.2 31.2
MUN e S 69.60 0.20 0.66 70.55 -0.95 162.9 356 -29.6 29.6
NWAO e P 42.60 0.20 0.77 42.78 -0.18 103.4 56 2.9 2.9
NWAO e S 54.70 0.10 0.79 55.13 -0.43 103.4 56 2.9 2.9
RKG e P 48.80 0.10 0.86 48.29 0.51 140.4 152 -31.2 31.2
RKG e S 63.70 0.20 0.67 65.03 -1.33 140.4 152 -29.6 29.6
Velocity Ratios
NWAO RKG MUN
NWAO 1.72 1.45 1.69
0.03 0.12 0.10
RKG 1.45 1.65 0.00
0.12 0.02 0.00
MUN 1.69 0.00 1.71
0.10 0.00 0.01
Start
Date 1991-02-05
Origin Time 0053 31.92 +- 0.75
Zone 50
Easting 497.51 +- 3.85 Longitude 116.974
Northing 6492.97 +- 6.06 Latitude -31.698
Depth 4.14 +- 22.19
Arrival times = 6 S.D. = 0.061 Seismographs = 3
Nearest recorder = 75.5 km Gap = 165.4 deg Accuracy = A
Effects Code = Imax = 0 Fault =
28 km NE ( 42 deg) of YORK
WESTERN AUSTRALIA
110 km E ( 76 deg) of PERTH
8 km SW (204 deg) of Meckering
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.7
PHASE INFORMATION
DATA USED
BAL e P 52.10 0.10 0.87 52.10 0.00 123.6 348 -30.8 30.8
BAL e S 66.10 0.10 0.78 66.10 0.00 123.6 348 2.1 2.1
KLB e P 44.30 0.20 0.79 44.26 0.04 75.5 81 3.4 3.4
KLB e S 52.80 0.10 0.81 52.81 -0.01 75.5 81 3.4 3.4
MUN e P 44.70 0.10 0.90 44.79 -0.09 78.8 246 3.2 3.2
MUN e S 53.80 0.10 0.81 53.72 0.08 78.8 246 3.2 3.2
Velocity Ratios
KLB MUN BAL
KLB 1.69 0.00 1.71
0.04 0.00 0.09
MUN 0.00 1.71 1.66
0.00 0.02 0.07
BAL 1.71 1.66 1.69
0.09 0.07 0.01
Start
Date 1991-02-06
Origin Time 0302 34.11 +- 138.22
Zone 52
Easting 455.22 +- 887.30 Longitude 128.580
Northing 8155.79 +- 539.84 Latitude -16.680
Depth 5.00 +- 540.81 C
Arrival times = 5 S.D. = 1.563 Seismographs = 2
Nearest recorder = 104.8 km Gap = 337.8 deg Accuracy = C
Effects Code = Imax = 0 Fault =
104 km S (190 deg) of KNA
WESTERN AUSTRALIA
101 km S (189 deg) of Kununurra
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.4
PHASE INFORMATION
DATA USED
KNA i+P 50.40 0.10 1.26 51.23 -0.83 104.8 10 2.8 2.8
KNA i S 62.80 0.10 1.13 63.09 -0.29 104.8 10 2.8 2.8
MTN e P 103.00 0.50 0.55 101.28 1.72 505.1 33 -42.2 42.2
MTN e S 151.80 0.20 0.60 151.25 0.55 505.1 33 -40.3 40.3
MTN e SG 177.20 0.20 0.60 173.65 3.55 505.1 33 0.6 0.6
Velocity Ratios
KNA MTN
KNA 1.76 1.69
0.02 0.03
MTN 1.69 1.71
0.03 0.02
Start
Date 1991-02-08
Origin Time 0015 7.55 +- 4.66
Zone 50
Easting 221.19 +- 26.69 Longitude 114.246
Northing 7272.37 +- 12.27 Latitude -24.638
Depth 5.00 +- 35.79 N
Arrival times = 9 S.D. = 0.743 Seismographs = 5
Nearest recorder = 264.8 km Gap = 227.5 deg Accuracy = C
Effects Code = Imax = 0 Fault =
66 km NW (302 deg) of LP02
WESTERN AUSTRALIA
825 km N (349 deg) of PERTH
64 km NE ( 65 deg) of CARNARVON
Record Dur Sync Unc Resp Seismometer Recorder Pol
NANU -0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.9
PHASE INFORMATION
DATA USED
MBL e P 98.00 0.50 0.53 97.15 0.85 690.4 57 -42.2 42.2
MBL e S 163.00 1.00 0.42 163.73 -0.73 690.4 57 -40.3 40.3
MBL e SG 202.50 0.50 0.48 198.29 4.21 690.4 57 0.4 0.4
MEKA w P 65.00 1.00 0.49 72.10 -7.10 483.0 118 -42.2 42.2
MEKA w S 120.00 2.00 0.38 120.11 -0.11 483.0 118 -40.3 40.3
MEKA e SG 142.00 1.00 0.43 140.99 1.01 483.0 118 0.7 0.7
MRWA i P 79.00 0.10 1.08 78.54 0.46 536.5 161 -42.2 42.2
MRWA e S 130.00 0.10 0.68 131.33 -1.33 536.5 161 -40.3 40.3
MRWA e SG 162.00 1.00 0.43 155.76 6.24 536.5 161 0.6 0.6
NANU i-P 45.60 0.10 1.16 45.67 -0.07 264.8 29 -42.2 42.2
NANU e SG 80.00 1.00 0.46 80.72 -0.72 264.8 29 1.1 1.1
NANU e S 80.00 1.00 0.46 74.10 5.90 264.8 29 -40.3 40.3
WARB w P 173.00 1.00 0.45 166.27 6.73 1261.8 100 -42.2 42.2
WARB e S 284.00 1.00 0.40 284.07 -0.07 1261.8 100 -40.3 40.3
Velocity Ratios
MRWA MBL
MRWA 1.71 1.74
0.00 0.12
MBL 1.74 1.72
0.12 0.02
Start
Date 1991-02-08
Origin Time 1657 28.04 +- 57.42
Zone 50
Easting 615.94 +- 150.29 Longitude 118.100
Northing 7926.74 +-1682.41 Latitude -18.748
Depth 5.00 +-1940.27 N
Arrival times = 5 S.D. = 0.512 Seismographs = 3
Nearest recorder = 322.9 km Gap = 294.1 deg Accuracy = D
Effects Code = Imax = 0 Fault =
218 km N (342 deg) of RP02
WESTERN AUSTRALIA
255 km NE ( 35 deg) of Dampier
179 km N (344 deg) of PORT HEDLAND
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.7
PHASE INFORMATION
DATA USED
MBL e P 74.00 1.00 0.50 73.20 0.80 322.9 146 -42.2 42.2
MBL i S 106.50 0.20 0.89 106.84 -0.34 322.9 146 -40.3 40.3
MEKA e S 224.00 1.00 0.41 222.54 1.46 872.2 177 -40.3 40.3
NANU i P 94.50 0.10 1.09 94.59 -0.09 500.0 212 -42.2 42.2
NANU i S 144.00 0.10 0.98 144.09 -0.09 500.0 212 -40.3 40.3
WARB w P 186.00 2.00 0.39 180.33 5.67 1208.7 134 -42.2 42.2
WARB e S 296.00 0.50 0.46 293.36 2.64 1208.7 134 -40.3 40.3
Velocity Ratios
MBL NANU
MBL 1.71 1.83
0.04 0.12
NANU 1.83 1.74
0.12 0.00
Start
Date 1991-02-10
Origin Time 1730 7.47 +- 0.80
Zone 50
Easting 504.96 +- 4.57 Longitude 117.052
Northing 6492.52 +- 6.21 Latitude -31.703
Depth 1.00 +- 116.34 C
Arrival times = 7 S.D. = 0.205 Seismographs = 4
Nearest recorder = 68.2 km Gap = 96.1 deg Accuracy = A
Effects Code = Imax = 0 Fault =
34 km NE ( 52 deg) of YORK
WESTERN AUSTRALIA
117 km E ( 77 deg) of PERTH
9 km SE (153 deg) of Meckering
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.7
PHASE INFORMATION
DATA USED
BAL e P 28.40 0.10 0.86 28.00 0.40 125.8 344 0.6 0.6
BAL e S 42.00 0.10 0.78 42.23 -0.23 125.8 344 0.6 0.6
KLB i-P 18.60 0.10 1.30 18.60 0.00 68.2 79 1.1 1.1
KLB e S 26.20 0.20 0.71 26.32 -0.12 68.2 79 1.1 1.1
MUN i-P 21.30 0.10 1.28 21.42 -0.12 85.5 248 0.8 0.8
MUN e S 31.20 0.20 0.70 31.10 0.10 85.5 248 0.8 0.8
NWAO e S 45.40 0.50 0.56 45.25 0.15 136.8 172 0.5 0.5
Velocity Ratios
KLB MUN BAL
KLB 1.68 0.00 1.61
0.03 0.00 0.06
MUN 0.00 1.72 1.52
0.00 0.03 0.09
BAL 1.61 1.52 1.65
0.06 0.09 0.01
Start
Date 1991-02-11
Origin Time 1748 36.37 +- 1.38
Zone 50
Easting 610.59 +- 7.11 Longitude 118.162
Northing 6535.52 +- 6.61 Latitude -31.309
Depth 0.59 +- 15.61
Arrival times = 9 S.D. = 0.260 Seismographs = 5
Nearest recorder = 49.4 km Gap = 142.3 deg Accuracy = B
Effects Code = Imax = 0 Fault =
43 km S (185 deg) of MUKI
WESTERN AUSTRALIA
231 km E ( 73 deg) of PERTH
22 km NW (332 deg) of Merredin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.8
PHASE INFORMATION
DATA USED
BAL i+P 62.10 0.10 1.21 61.84 0.26 159.3 299 -30.8 30.8
BAL i S 80.20 0.10 1.09 80.39 -0.19 159.3 299 0.3 0.3
COOL e PG 84.00 1.00 0.51 83.45 0.55 288.6 81 0.2 0.2
COOL e S 108.00 1.00 0.46 108.79 -0.79 288.6 81 -40.3 40.3
COOL e SG 115.00 0.50 0.52 116.10 -1.10 288.6 81 0.2 0.2
KLB i+P 44.30 0.10 1.34 44.43 -0.13 49.4 230 1.0 1.0
KLB i S 50.10 0.10 1.20 50.02 0.08 49.4 230 1.0 1.0
MUN e P 67.10 0.10 0.83 67.10 0.00 199.5 247 -42.2 42.2
MUN e S 90.00 1.00 0.47 90.00 0.00 199.5 247 -40.3 40.3
NWAO w P 67.00 1.00 0.53 67.10 -0.10 199.5 205 -42.2 42.2
NWAO e S 91.30 0.30 0.60 90.00 1.30 199.5 205 -40.3 40.3
Velocity Ratios
KLB BAL MUN
KLB 1.73 1.69 1.75
0.03 0.03 0.06
BAL 1.69 1.70 0.00
0.03 0.01 0.00
MUN 1.75 0.00 1.75
0.06 0.00 0.04
Start
Date 1991-02-13
Origin Time 0735 7.21 +- 2.19
Zone 51
Easting 756.51 +- 7.69 Longitude 125.653
Northing 6703.24 +- 10.83 Latitude -29.775
Depth 1.00 +- 20.82 C
Arrival times = 9 S.D. = 0.475 Seismographs = 4
Nearest recorder = 258.9 km Gap = 135.6 deg Accuracy = C
Effects Code = Imax = 0 Fault =
257 km NW (295 deg) of FORT
WESTERN AUSTRALIA
968 km E ( 78 deg) of PERTH
Record Dur Sync Unc Resp Seismometer Recorder Pol
FORR -0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.9
PHASE INFORMATION
DATA USED
FORR S-P 28.90 0.30 0.93 28.21 0.69 258.9 116 0.0 0.0
FORR i-P 44.90 0.10 1.16 45.10 -0.20 258.9 116 -42.2 42.2
FORR e S 73.80 0.30 0.59 73.31 0.49 258.9 116 -40.3 40.3
MBL e P 150.00 1.00 0.44 149.06 0.94 1119.0 327 -42.2 42.2
MBL e S 252.60 0.50 0.46 254.32 -1.72 1119.0 327 -40.3 40.3
MEKA e S 186.40 0.20 0.57 183.39 3.01 781.8 295 -40.3 40.3
MEKA e SG 224.00 0.50 0.47 223.17 0.83 781.8 295 0.1 0.1
MUN e S 215.70 0.50 0.47 215.83 -0.13 936.1 252 -40.3 40.3
MUN e SG 266.00 0.50 0.47 265.81 0.19 936.1 252 0.1 0.1
WARB S-P 42.00 0.50 0.80 41.74 0.26 410.0 13 0.0 0.0
WARB e P 63.00 0.50 0.56 63.36 -0.36 410.0 13 -42.2 42.2
WARB e S 105.00 0.30 0.56 105.11 -0.11 410.0 13 -40.3 40.3
Velocity Ratios
FORR WARB
FORR 1.77 1.72
0.01 0.09
WARB 1.72 1.75
0.09 0.02
Start
Date 1991-02-16
Origin Time 1114 31.22 +- 3.10
Zone 50
Easting 514.94 +- 18.94 Longitude 117.156
Northing 6598.72 +- 20.41 Latitude -30.744
Depth 3.10 +- 54.12
Arrival times = 6 S.D. = 0.133 Seismographs = 3
Nearest recorder = 45.7 km Gap = 219.3 deg Accuracy = A
Effects Code = Imax = 0 Fault =
0 km NE ( 67 deg) of CAA
WESTERN AUSTRALIA
183 km NE ( 43 deg) of PERTH
4 km NE ( 41 deg) of Cadoux
Record Dur Sync Unc Resp Seismometer Recorder Pol
CAK 0.00 Seismograph details unknown
CAS 0.00 Seismograph details unknown
CAR 0.00 Seismograph details unknown
CAA 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.9
PHASE INFORMATION
DATA USED
BAL e P 38.60 0.10 0.94 38.69 -0.09 45.7 289 4.3 4.3
BAL e P 42.30 0.10 0.84 38.69 3.61 45.7 289 4.3 4.3
BAL e S 44.00 1.00 0.53 43.87 0.13 45.7 289 4.3 4.3
CAA S-P 1.00 5.00 0.53 0.39 0.61 0.5 247 0.0 0.0
CAK S-P 5.00 5.00 0.50 0.53 4.47 3.2 333 0.0 0.0
CAR S-P 5.00 5.00 0.49 0.63 4.37 4.4 202 0.0 0.0
CAS S-P 5.00 5.00 0.47 0.95 4.05 7.6 197 0.0 0.0
KLB e P 49.40 0.20 0.76 49.20 0.20 110.2 148 1.8 1.8
KLB e S 61.50 0.20 0.69 61.67 -0.17 110.2 148 1.8 1.8
MRWA e P 63.10 0.10 0.83 62.07 1.03 202.8 326 -42.2 42.2
MRWA e S 86.10 0.10 0.75 85.09 1.01 202.8 326 -40.3 40.3
MUN e P 57.10 0.10 0.85 57.10 -0.00 163.8 213 -30.8 30.8
MUN e S 76.50 0.20 0.66 76.48 0.02 163.8 213 1.2 1.2
Velocity Ratios
BAL KLB MUN
BAL 1.73 1.62 1.76
0.16 0.16 0.08
KLB 1.62 1.67 1.95
0.16 0.03 0.13
MUN 1.76 1.95 1.75
0.08 0.13 0.01
Start
Date 1991-02-20
Origin Time 0115 49.71 +- 1.05
Zone 50
Easting 511.03 +- 14.15 Longitude 117.115
Northing 6577.68 +- 10.62 Latitude -30.934
Depth 2.86 +- 32.26
Arrival times = 6 S.D. = 0.030 Seismographs = 4
Nearest recorder = 53.4 km Gap = 187.3 deg Accuracy = A
Effects Code = Imax = 0 Fault =
13 km S (186 deg) of CAS
WESTERN AUSTRALIA
165 km NE ( 47 deg) of PERTH
9 km S (171 deg) of Manmanning
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.7
PHASE INFORMATION
DATA USED
BAL e P 58.40 0.10 0.93 58.43 -0.03 53.4 312 3.4 3.4
BAL e S 64.50 0.20 0.73 64.47 0.03 53.4 312 3.4 3.4
KLB e P 65.30 0.10 0.89 65.26 0.04 95.3 140 1.9 1.9
KLB e S 76.00 0.20 0.69 76.04 -0.04 95.3 140 1.9 1.9
MUN S-P 16.70 0.10 1.22 16.70 0.00 144.3 216 0.0 0.0
NWAO e SG 110.80 0.20 0.64 110.80 0.00 221.1 177 0.8 0.8
Velocity Ratios
BAL KLB
BAL 1.70 1.67
0.04 0.11
KLB 1.67 1.69
0.11 0.02
Start
Date 1991-02-21
Origin Time 0143 14.16 +- 0.59
Zone 50
Easting 518.42 +- 4.79 Longitude 117.195
Northing 6444.60 +- 3.85 Latitude -32.135
Depth 1.00 +- 22.62 C
Arrival times = 8 S.D. = 0.239 Seismographs = 4
Nearest recorder = 80.5 km Gap = 136.1 deg Accuracy = A
Effects Code = Imax = 0 Fault =
16 km SW (205 deg) of QUA
WESTERN AUSTRALIA
129 km E (100 deg) of PERTH
25 km E ( 94 deg) of Beverley
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.9
PHASE INFORMATION
DATA USED
BAL S-P 20.20 0.10 1.20 20.80 -0.60 175.6 344 0.0 0.0
BAL e P 42.30 0.10 0.84 41.87 0.43 175.6 344 -30.8 30.8
BAL e S 62.50 0.20 0.66 62.67 -0.17 175.6 344 0.4 0.4
COOL e S 110.70 0.20 0.57 109.98 0.72 400.1 70 -40.3 40.3
KLB S-P 9.00 0.10 1.28 9.10 -0.10 80.5 41 0.0 0.0
KLB e P 27.30 0.10 0.90 27.29 0.01 80.5 41 0.9 0.9
KLB e S 36.30 0.30 0.65 36.39 -0.09 80.5 41 0.9 0.9
MUN S-P 11.20 0.10 1.27 10.72 0.48 94.8 280 0.0 0.0
MUN i-P 29.40 0.10 1.27 29.62 -0.22 94.8 280 0.8 0.8
MUN e S 40.60 0.10 0.80 40.34 0.26 94.8 280 0.8 0.8
NWAO S-P 10.30 0.10 1.27 9.94 0.36 87.9 177 0.0 0.0
NWAO i-P 28.40 0.10 1.27 28.49 -0.09 87.9 177 0.8 0.8
NWAO e S 38.70 0.20 0.70 38.43 0.27 87.9 177 0.8 0.8
Velocity Ratios
KLB NWAO MUN BAL
KLB 1.68 0.00 0.00 1.75
0.04 0.00 0.00 0.06
NWAO 0.00 1.72 0.00 1.71
0.00 0.03 0.00 0.05
MUN 0.00 0.00 1.73 1.70
0.00 0.00 0.02 0.05
BAL 1.75 1.71 1.70 1.72
0.06 0.05 0.05 0.01
Start
Date 1991-02-21
Origin Time 2052 38.88 +- 66.36
Zone 50
Easting 483.36 +- 466.47 Longitude 116.843
Northing 8033.72 +-2035.91 Latitude -17.784
Depth 5.00 +-2642.20 N
Arrival times = 5 S.D. = 0.606 Seismographs = 3
Nearest recorder = 488.0 km Gap = 306.0 deg Accuracy = D
Effects Code = Imax = 0 Fault =
353 km N (346 deg) of RP01
WESTERN AUSTRALIA
333 km NW (326 deg) of PORT HEDLAND
318 km N ( 2 deg) of Dampier
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.8
PHASE INFORMATION
DATA USED
MBL e P 104.00 0.20 0.66 104.01 -0.01 488.0 140 -42.2 42.2
MBL e S 152.00 0.20 0.60 152.45 -0.45 488.0 140 -40.3 40.3
MEKA e S 260.00 0.30 0.51 258.81 1.19 993.0 170 -40.3 40.3
MEKA e SG 310.70 0.30 0.51 313.19 -2.49 993.0 170 0.3 0.3
NANU e P 111.20 0.10 0.75 110.92 0.28 545.3 194 -42.2 42.2
NANU e S 164.00 0.20 0.59 164.48 -0.48 545.3 194 -40.3 40.3
WARB e P 213.00 0.30 0.56 211.66 1.34 1378.1 134 -42.2 42.2
WARB e S 343.50 0.30 0.51 339.88 3.62 1378.1 134 -40.3 40.3
Velocity Ratios
MBL NANU
MBL 1.74 1.67
0.01 0.13
NANU 1.67 1.73
0.13 0.01
Start
Date 1991-02-22
Origin Time 2201 26.35 +- 8.89
Zone 50
Easting 561.93 +- 49.00 Longitude 117.688
Northing 6004.97 +- 318.42 Latitude -36.098
Depth 5.00 +- 388.06 N
Arrival times = 8 S.D. = 0.921 Seismographs = 4
Nearest recorder = 180.3 km Gap = 310.0 deg Accuracy = D
Effects Code = Imax = 0 Fault =
180 km S (160 deg) of RKG
WESTERN AUSTRALIA
490 km S (160 deg) of PERTH
123 km S (188 deg) of ALBANY
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.4
PHASE INFORMATION
DATA USED
BAL e P 107.50 0.50 0.54 106.91 0.59 615.6 351 -42.2 42.2
BAL e S 168.00 1.00 0.42 166.78 1.22 615.6 351 -40.3 40.3
COOL w P 112.00 2.00 0.41 112.50 -0.50 661.7 29 -42.2 42.2
COOL e S 175.80 0.30 0.53 176.53 -0.73 661.7 29 -40.3 40.3
KLB e S 141.00 1.00 0.43 142.38 -1.38 499.7 0 -40.3 40.3
MRWA e P 127.00 0.20 0.63 126.66 0.34 779.0 347 -42.2 42.2
MRWA e S 204.00 0.40 0.49 201.18 2.82 779.0 347 -40.3 40.3
MUN e P 90.00 0.20 0.67 90.11 -0.11 476.7 343 -42.2 42.2
MUN e S 138.00 1.00 0.43 137.54 0.46 476.7 343 -40.3 40.3
NWAO e P 77.00 0.30 0.63 75.29 1.71 354.1 353 -42.2 42.2
NWAO e S 113.40 0.50 0.51 111.73 1.67 354.1 353 -40.3 40.3
RKG S-P 20.50 0.10 1.18 20.87 -0.37 180.3 339 0.0 0.0
RKG i P 54.00 0.10 1.20 54.27 -0.27 180.3 339 -42.2 42.2
RKG i S 74.50 0.30 0.86 75.14 -0.64 180.3 339 -40.3 40.3
Velocity Ratios
RKG NWAO MUN COOL
RKG 1.74 1.69 1.76 1.75
0.02 0.07 0.05 0.08
NWAO 1.69 1.72 1.89 1.78
0.07 0.02 0.20 0.15
MUN 1.76 1.89 1.75 0.00
0.05 0.20 0.02 0.00
COOL 1.75 1.78 0.00 1.74
0.08 0.15 0.00 0.05
Start
Date 1991-02-24
Origin Time 1518 24.79 +- 13.77
Zone 49
Easting 658.27 +- 59.22 Longitude 112.590
Northing 7051.13 +- 29.31 Latitude -26.652
Depth 5.00 +- 41.02 N
Arrival times = 8 S.D. = 1.482 Seismographs = 5
Nearest recorder = 440.0 km Gap = 243.2 deg Accuracy = D
Effects Code = Imax = 0 Fault =
176 km W (253 deg) of LP01
WESTERN AUSTRALIA
667 km NW (331 deg) of PERTH
224 km SW (209 deg) of CARNARVON
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.5
PHASE INFORMATION
DATA USED
BAL e S 162.00 0.50 0.49 161.05 0.95 595.8 138 -40.3 40.3
MEKA w P 81.00 2.00 0.42 102.67 -21.67 593.2 90 -42.2 42.2
MEKA e S 159.00 0.50 0.49 160.56 -1.56 593.2 90 -40.3 40.3
MEKA e SG 188.70 0.30 0.54 188.67 0.03 593.2 90 0.5 0.5
MRWA e PG 96.00 2.00 0.42 96.57 -0.57 440.0 131 0.7 0.7
MRWA w P 96.00 2.00 0.43 84.11 11.89 440.0 131 -42.2 42.2
MRWA e S 128.00 0.20 0.60 128.25 -0.25 440.0 131 -40.3 40.3
MUN e S 182.00 1.00 0.42 180.39 1.61 687.7 150 -40.3 40.3
NANU e P 94.80 0.20 0.66 96.48 -1.68 542.4 33 -42.2 42.2
NANU e S 152.00 0.20 0.59 149.78 2.22 542.4 33 -40.3 40.3
Velocity Ratios
NANU
NANU 1.82
0.01
Start
Date 1991-03-03
Origin Time 1601 46.05 +- 0.58
Zone 50
Easting 540.17 +- 4.47 Longitude 117.426
Northing 6446.01 +- 2.82 Latitude -32.121
Depth 10.11 +- 12.10
Arrival times = 7 S.D. = 0.164 Seismographs = 4
Nearest recorder = 66.7 km Gap = 121.7 deg Accuracy = B
Effects Code = Imax = 0 Fault =
12 km S (166 deg) of QUAI
WESTERN AUSTRALIA
150 km E ( 98 deg) of PERTH
47 km E ( 90 deg) of Beverley
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.2
PHASE INFORMATION
DATA USED
BAL e P 75.00 0.50 0.61 73.53 1.47 181.3 337 -42.2 42.2
BAL e S 96.20 0.50 0.55 94.14 2.06 181.3 337 -40.3 40.3
COOL e P 97.70 0.20 0.68 97.48 0.22 379.1 69 -42.2 42.2
COOL e SG 148.00 0.50 0.51 150.83 -2.83 379.1 69 1.6 1.6
KLB i-P 56.80 0.10 1.30 57.06 -0.26 66.7 28 8.9 8.9
KLB i S 64.90 0.10 1.17 64.69 0.21 66.7 28 8.9 8.9
MUN i-P 64.60 0.10 1.24 64.65 -0.05 116.0 277 -30.8 30.8
MUN i S 78.30 0.10 1.12 78.23 0.07 116.0 277 5.1 5.1
NWAO i+P 61.00 0.10 1.27 61.00 0.00 91.1 191 6.5 6.5
NWAO i S 71.40 0.10 1.14 71.37 0.03 91.1 191 6.5 6.5
Velocity Ratios
KLB NWAO MUN
KLB 1.75 1.55 1.72
0.03 0.13 0.07
NWAO 1.55 1.70 1.92
0.13 0.02 0.17
MUN 1.72 1.92 1.74
0.07 0.17 0.01
Start
Date 1991-03-05
Origin Time 1903 23.86 +- 0.00
Zone 50
Easting 382.88 +- 0.00 Longitude 115.871
Northing 7647.42 +- 0.00 Latitude -21.271
Depth 5.00 +- 0.00 N
Arrival times = 4 S.D. = 0.972 Seismographs = 2
Nearest recorder = 146.1 km Gap = 253.9 deg Accuracy = D
Effects Code = Imax = 0 Fault =
32 km N (356 deg) of LP05
WESTERN AUSTRALIA
112 km SW (232 deg) of Dampier
87 km NE ( 63 deg) of Onslow
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.3
PHASE INFORMATION
DATA USED
MBL w P 81.00 2.00 0.43 79.72 1.28 411.5 88 -42.2 42.2
MBL w S 120.00 5.00 0.33 121.31 -1.31 411.5 88 -40.3 40.3
NANU e P 46.80 0.30 0.68 47.09 -0.29 146.1 195 -30.8 30.8
NANU e S 65.00 1.00 0.48 64.26 0.74 146.1 195 2.0 2.0
Velocity Ratios
NANU MBL
NANU 1.79 0.00
0.07 0.00
MBL 0.00 1.68
0.00 0.15
Start
Date 1991-03-07
Origin Time 0809 32.93 +- 121.74
Zone 50
Easting 517.98 +- 799.61 Longitude 117.186
Northing 6726.77 +- 601.02 Latitude -29.589
Depth 1.00 +- 732.09 C
Arrival times = 5 S.D. = 1.006 Seismographs = 3
Nearest recorder = 121.9 km Gap = 236.9 deg Accuracy = C
Effects Code = Imax = 0 Fault =
54 km N (343 deg) of KOO3
WESTERN AUSTRALIA
291 km NE ( 26 deg) of PERTH
18 km N ( 11 deg) of Mt Gibson Mine
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.0
PHASE INFORMATION
DATA USED
BAL e P 51.00 0.10 0.87 52.81 -1.81 121.9 202 0.6 0.6
BAL i S 67.00 0.10 1.12 66.60 0.40 121.9 202 0.6 0.6
KLB i P 67.80 0.10 1.17 67.14 0.66 228.7 166 -42.2 42.2
KLB i S 92.60 0.10 1.05 92.63 -0.03 228.7 166 -40.3 40.3
KLB i SG 92.60 0.10 1.05 96.11 -3.51 228.7 166 0.3 0.3
MRWA S-P 15.00 2.00 0.68 13.86 1.14 122.5 289 0.0 0.0
MUN i P 72.80 0.10 1.15 73.44 -0.64 280.9 199 -42.2 42.2
MUN i S 106.50 0.10 1.03 103.60 2.90 280.9 199 -40.3 40.3
Velocity Ratios
BAL KLB
BAL 1.89 1.52
0.02 0.03
KLB 1.52 1.71
0.03 0.01
Start
Date 1991-03-07
Origin Time 1352 23.19 +- 0.87
Zone 50
Easting 531.31 +- 6.40 Longitude 117.329
Northing 6546.00 +- 5.20 Latitude -31.220
Depth 1.00 +- 15.28 C
Arrival times = 8 S.D. = 0.366 Seismographs = 4
Nearest recorder = 58.2 km Gap = 176.6 deg Accuracy = A
Effects Code = Imax = 0 Fault =
31 km NW (317 deg) of KBW
WESTERN AUSTRALIA
162 km NE ( 60 deg) of PERTH
29 km E ( 94 deg) of Dowerin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.6
PHASE INFORMATION
DATA USED
BAL i-P 37.90 0.10 1.27 37.92 -0.02 90.3 318 0.8 0.8
BAL i S 48.30 0.10 1.14 48.13 0.17 90.3 318 0.8 0.8
COOL e P 73.00 0.50 0.57 74.06 -1.06 366.3 85 -42.2 42.2
COOL PG 80.70 0.50 0.81 82.94 -2.24 366.3 85 0.2 0.2
COOL e S 112.00 1.00 0.45 111.89 0.11 366.3 85 -40.3 40.3
COOL e SG 122.00 1.00 0.45 124.37 -2.37 366.3 85 0.2 0.2
KLB i-P 32.90 0.10 1.32 32.68 0.22 58.2 135 1.3 1.3
KLB i S 39.00 0.10 1.19 39.26 -0.26 58.2 135 1.3 1.3
MUN i-P 44.90 0.10 1.23 45.29 -0.39 135.5 231 -30.8 30.8
MUN i S 60.60 0.10 1.10 60.63 -0.03 135.5 231 0.5 0.5
NWAO i+P 52.30 0.10 1.19 52.65 -0.35 189.4 182 -42.2 42.2
NWAO i S 75.40 0.10 1.07 74.62 0.78 189.4 182 -40.3 40.3
RKG w P 75.30 0.30 0.64 74.80 0.50 372.6 184 -42.2 42.2
RKG SG 122.30 0.50 0.73 126.12 -3.82 372.6 184 0.2 0.2
Velocity Ratios
KLB BAL MUN NWAO
KLB 1.63 1.86 1.80 1.88
0.03 0.12 0.05 0.03
BAL 1.86 1.71 1.76 1.88
0.12 0.02 0.08 0.04
MUN 1.80 1.76 1.72 2.00
0.05 0.08 0.01 0.08
NWAO 1.88 1.88 2.00 1.79
0.03 0.04 0.08 0.01
Start
Date 1991-03-09
Origin Time 0136 30.42 +- 2.80
Zone 51
Easting 355.52 +- 16.04 Longitude 121.490
Northing 6592.68 +- 22.93 Latitude -30.790
Depth 9.00 +- 19.25 C
Arrival times = 9 S.D. = 0.641 Seismographs = 9
Nearest recorder = 34.6 km Gap = 132.0 deg Accuracy = B
Effects Code = F Imax = 6 Fault =
4 km SE (150 deg) of KLCH
WESTERN AUSTRALIA
552 km E ( 78 deg) of PERTH
37 km NE ( 61 deg) of Coolgardie
5 km SE (157 deg) of KALGOORLIE
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 4.2
PHASE INFORMATION
DATA USED
ASP e P 211.00 0.10 0.70 213.19 -2.19 1464.2 60 -42.2 42.2
ASP e S 348.00 0.10 0.63 348.86 -0.86 1464.2 60 -40.3 40.3
BAL i-P 91.20 0.10 1.10 91.65 -0.45 459.4 271 -42.2 42.2
BAL e S 138.70 0.20 0.60 137.25 1.45 459.4 271 -40.3 40.3
COOL S-P 3.30 0.05 1.58 4.06 -0.76 34.6 252 0.0 0.0
COOL i-P 36.40 0.10 1.37 36.27 0.13 34.6 252 15.4 15.4
FORR e P 113.00 0.30 0.60 112.26 0.74 629.6 91 -42.2 42.2
FORR e S 177.50 1.00 0.42 173.14 4.36 629.6 91 -40.3 40.3
HWK e P 196.00 0.50 0.51 196.53 -0.53 1326.8 89 -42.2 42.2
HWK e S 323.00 0.10 0.63 319.85 3.15 1326.8 89 -40.3 40.3
KLB i-P 80.90 0.10 1.12 80.45 0.45 366.8 254 -42.2 42.2
KLB e SG 128.00 0.50 0.51 131.78 -3.78 366.8 254 1.5 1.5
KLB e S 128.00 0.50 0.51 117.76 10.24 366.8 254 -40.3 40.3
KNA e P 254.30 0.30 0.56 256.74 -2.44 1824.8 25 -42.2 42.2
MBL i+P 166.10 0.10 1.00 166.69 -0.59 1080.0 350 -42.2 42.2
MBL e S 269.40 0.20 0.55 267.90 1.50 1080.0 350 -40.3 40.3
MEKA i P 102.30 0.10 1.08 102.13 0.17 545.9 327 -42.2 42.2
MTN w P 299.00 0.20 0.62 305.21 -6.21 2222.2 28 -46.1 47.1
MUN i P 98.50 0.10 1.08 99.00 -0.50 520.2 253 -42.2 42.2
MUN e S 151.00 0.10 0.68 150.05 0.95 520.2 253 -40.3 40.3
NANU e P 169.00 2.00 0.39 168.27 0.73 1093.2 325 -42.2 42.2
NANU e S 271.00 0.50 0.46 270.66 0.34 1093.2 325 -40.3 40.3
NWAO e P 103.00 0.10 0.77 92.67 10.33 467.8 238 -42.2 42.2
NWAO e S 156.00 0.10 0.69 139.03 16.97 467.8 238 -40.3 40.3
RKG e P 111.30 0.20 0.65 107.94 3.36 594.1 223 -42.2 42.2
RKG e PG 126.50 0.30 0.60 127.35 -0.85 594.1 223 0.9 0.9
WARB e P 124.70 0.20 0.64 122.89 1.81 717.6 45 -42.2 42.2
WARB e S 194.60 0.20 0.57 191.64 2.96 717.6 45 -40.3 40.3
WRA i P 246.90 0.10 1.00 250.27 -3.37 1771.1 49 -42.2 42.2
WRA e S 415.00 0.10 0.63 413.42 1.58 1771.1 49 -40.3 40.3
NO VELOCITY RATIOS
Start
Date 1991-03-09
Origin Time 1522 24.86 +- 5.40
Zone 51
Easting 265.69 +- 23.76 Longitude 120.752
Northing 7723.80 +- 52.39 Latitude -20.570
Depth 5.00 +- 33.79 N
Arrival times = 6 S.D. = 0.338 Seismographs = 4
Nearest recorder = 115.9 km Gap = 250.2 deg Accuracy = C
Effects Code = Imax = 0 Fault =
115 km NE ( 55 deg) of MBL
WESTERN AUSTRALIA
229 km E ( 98 deg) of PORT HEDLAND
124 km NE ( 58 deg) of Marble Bar
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.9
PHASE INFORMATION
DATA USED
MBL i-P 43.70 0.10 1.24 43.78 -0.08 115.9 235 2.6 2.6
MEKA e P 116.80 0.10 0.73 116.55 0.25 707.5 198 -42.2 42.2
MEKA e S 184.80 0.10 0.66 184.68 0.12 707.5 198 -40.3 40.3
NANU e P 101.70 0.30 0.60 102.06 -0.36 588.0 247 -42.2 42.2
NANU SG 190.00 2.00 0.39 187.31 2.69 588.0 247 0.5 0.5
WARB e P 136.00 0.20 0.63 135.63 0.37 865.3 137 -42.2 42.2
WARB w S 217.00 1.00 0.42 217.89 -0.89 865.3 137 -40.3 40.3
Velocity Ratios
MEKA WARB
MEKA 1.74 1.68
0.00 0.08
WARB 1.68 1.73
0.08 0.01
Start
Date 1991-03-09
Origin Time 1752 9.84 +- 1.16
Zone 50
Easting 508.91 +- 8.75 Longitude 117.093
Northing 6593.75 +- 8.51 Latitude -30.789
Depth 2.64 +- 28.16
Arrival times = 6 S.D. = 0.160 Seismographs = 3
Nearest recorder = 42.2 km Gap = 206.1 deg Accuracy = B
Effects Code = Imax = 0 Fault =
4 km NW (301 deg) of CAS
WESTERN AUSTRALIA
175 km NE ( 43 deg) of PERTH
4 km SW (239 deg) of Cadoux
Record Dur Sync Unc Resp Seismometer Recorder Pol
CAK 0.00 Seismograph details unknown
CAS 0.00 Seismograph details unknown
CAR 0.00 Seismograph details unknown
CAA 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.1
PHASE INFORMATION
DATA USED
BAL e P 16.80 0.10 0.95 16.74 0.06 42.2 298 4.0 4.0
BAL e S 21.40 0.10 0.85 21.52 -0.12 42.2 298 4.0 4.0
CAA S-P 1.00 5.00 0.47 0.89 0.11 7.3 49 0.0 0.0
CAK S-P 5.00 5.00 0.47 1.08 3.92 9.1 30 0.0 0.0
CAR S-P 5.00 5.00 0.49 0.60 4.40 4.4 78 0.0 0.0
CAS S-P 5.00 5.00 0.49 0.60 4.40 4.4 121 0.0 0.0
KLB e P 27.90 0.10 0.88 27.68 0.22 109.3 144 1.5 1.5
KLB e S 39.80 0.10 0.79 40.05 -0.25 109.3 144 1.5 1.5
MUN e P 34.70 0.10 0.85 34.72 -0.02 156.4 212 -30.8 30.8
MUN e S 53.10 0.10 0.76 53.04 0.06 156.4 212 1.1 1.1
RKG SMS 92.00 2.00 0.34 120.14 -28.14 419.2 181 -24.6 24.6
Velocity Ratios
BAL KLB MUN
BAL 1.66 1.66 1.77
0.04 0.05 0.03
KLB 1.66 1.66 1.96
0.05 0.01 0.09
MUN 1.77 1.96 1.74
0.03 0.09 0.01
Start
Date 1991-03-12
Origin Time 1040 56.36 +- 7.50
Zone 49
Easting 852.15 +- 42.61 Longitude 114.573
Northing 6922.55 +- 45.54 Latitude -27.775
Depth 5.00 +- 80.96 N
Arrival times = 8 S.D. = 0.935 Seismographs = 4
Nearest recorder = 377.0 km Gap = 270.9 deg Accuracy = C
Effects Code = Imax = 0 Fault =
40 km E ( 98 deg) of KBAR
WESTERN AUSTRALIA
479 km N (345 deg) of PERTH
110 km N (358 deg) of GERALDTON
38 km E (103 deg) of Kalbarri
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.7
PHASE INFORMATION
DATA USED
BAL e P 109.00 0.20 0.68 108.07 0.93 377.0 147 -42.2 42.2
BAL e S 147.20 0.20 0.61 146.57 0.63 377.0 147 -40.3 40.3
COOL e S 219.20 0.50 0.48 220.72 -1.52 729.1 120 -40.3 40.3
KLB w P 128.00 1.00 0.49 125.95 2.05 524.9 144 -42.2 42.2
KLB e S 177.20 0.20 0.59 177.71 -0.51 524.9 144 -40.3 40.3
MBL S 255.00 2.00 0.37 258.85 -3.85 910.4 37 -40.3 40.3
MEKA e P 112.00 0.30 0.62 112.61 -0.61 414.4 72 -42.2 42.2
MEKA e S 156.50 0.30 0.56 154.47 2.03 414.4 72 -40.3 40.3
MEKA e SG 170.80 0.20 0.61 170.84 -0.04 414.4 72 0.8 0.8
MUN e P 121.40 0.10 0.76 122.07 -0.67 492.8 161 -42.2 42.2
MUN e S 170.00 0.20 0.60 170.94 -0.94 492.8 161 -40.3 40.3
NANU e P 130.70 0.10 0.75 133.54 -2.84 587.9 9 -42.2 42.2
NANU e S 185.70 0.50 0.49 190.92 -5.22 587.9 9 -40.3 40.3
NWAO w P 135.50 2.00 0.42 138.31 -2.81 627.1 156 -42.2 42.2
NWAO e S 196.30 1.00 0.42 199.22 -2.92 627.1 156 -40.3 40.3
WARB e P 207.80 0.20 0.61 210.73 -2.93 1225.8 84 -42.2 42.2
WARB e S 321.00 1.00 0.40 325.30 -4.30 1225.8 84 -40.3 40.3
Velocity Ratios
BAL MUN KLB
BAL 1.73 1.84 1.58
0.01 0.08 0.13
MUN 1.84 1.75 0.00
0.08 0.01 0.00
KLB 1.58 0.00 1.69
0.13 0.00 0.03
Start
Date 1991-03-14
Origin Time 0741 5.71 +- 0.00
Zone 50
Easting 438.09 +- 0.00 Longitude 116.399
Northing 7534.70 +- 0.00 Latitude -22.292
Depth 5.00 +- 0.00 N
Arrival times = 4 S.D. = 3.686 Seismographs = 2
Nearest recorder = 96.7 km Gap = 181.8 deg Accuracy = D
Effects Code = Imax = 0 Fault =
96 km SE (147 deg) of LP05
WESTERN AUSTRALIA
185 km S (190 deg) of Dampier
151 km SE (119 deg) of Onslow
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign -10.0
PHASE INFORMATION
DATA USED
MBL e P 55.00 0.10 0.78 57.37 -2.37 376.7 71 -42.2 42.2
MBL e S 105.00 2.00 0.39 95.84 9.16 376.7 71 -40.3 40.3
NANU e P 20.10 0.10 0.89 21.50 -1.40 96.7 252 3.0 3.0
NANU e S 34.00 0.30 0.64 32.45 1.55 96.7 252 3.0 3.0
Velocity Ratios
NANU MBL
NANU 1.97 2.03
0.03 0.08
MBL 2.03 2.01
0.08 0.04
Start
Date 1991-03-14
Origin Time 1218 14.09 +- 2.36
Zone 50
Easting 511.66 +- 16.42 Longitude 117.122
Northing 6598.69 +- 22.48 Latitude -30.745
Depth 4.51 +- 36.70
Arrival times = 6 S.D. = 0.075 Seismographs = 3
Nearest recorder = 42.6 km Gap = 216.4 deg Accuracy = A
Effects Code = Imax = 0 Fault =
2 km W (273 deg) of CAA
WESTERN AUSTRALIA
180 km NE ( 42 deg) of PERTH
3 km N (345 deg) of Cadoux
Record Dur Sync Unc Resp Seismometer Recorder Pol
CAK 0.00 Seismograph details unknown
CAS 0.00 Seismograph details unknown
CAR 0.00 Seismograph details unknown
CAA 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.3
PHASE INFORMATION
DATA USED
BAL i-P 21.00 0.10 1.35 21.08 -0.08 42.6 291 6.4 6.4
BAL i S 26.00 0.10 1.22 25.93 0.07 42.6 291 6.4 6.4
CAA S-P 5.00 5.00 0.50 0.63 4.37 2.8 93 0.0 0.0
CAK S-P 5.00 5.00 0.49 0.67 4.33 3.5 31 0.0 0.0
CAR S-P 5.00 5.00 0.49 0.73 4.27 4.3 159 0.0 0.0
CAS S-P 5.00 5.00 0.47 0.99 4.01 7.3 172 0.0 0.0
COOL e P 66.30 0.30 0.63 66.88 -0.58 385.4 93 -42.2 42.2
COOL e S 105.30 0.30 0.56 106.18 -0.88 385.4 93 -40.3 40.3
COOL e SG 120.00 0.50 0.51 120.55 -0.55 385.4 93 0.7 0.7
KLB i-P 32.40 0.10 1.25 32.36 0.04 111.9 147 2.5 2.5
KLB i S 45.00 0.10 1.12 45.02 -0.02 111.9 147 2.5 2.5
MRWA S-P 23.00 5.00 0.37 22.76 0.24 201.0 327 0.0 0.0
MUN e P 39.70 0.20 0.74 39.60 0.10 162.0 212 -30.8 30.8
MUN e S 58.70 0.20 0.66 58.78 -0.08 162.0 212 -23.9 23.9
NWAO e SG 79.80 0.30 0.59 80.98 -1.18 242.1 177 1.1 1.1
WARB e P 149.00 0.20 0.57 148.91 0.09 1063.7 63 -42.2 42.2
WARB e S 250.00 0.50 0.39 248.99 1.01 1063.7 63 -40.3 40.3
Velocity Ratios
BAL KLB MUN
BAL 1.72 1.67 1.75
0.04 0.05 0.04
KLB 1.67 1.69 1.88
0.05 0.01 0.12
MUN 1.75 1.88 1.74
0.04 0.12 0.02
Start
Date 1991-03-15
Origin Time 0429 39.34 +- 63.81
Zone 51
Easting 660.69 +- 82.95 Longitude 124.655
Northing 6750.98 +- 123.97 Latitude -29.360
Depth 1.00 +- 535.39 C
Arrival times = 5 S.D. = 0.124 Seismographs = 5
Nearest recorder = 365.9 km Gap = 141.4 deg Accuracy = C
Effects Code = Imax = 0 Fault =
320 km NE ( 55 deg) of KLDM
WESTERN AUSTRALIA
891 km E ( 73 deg) of PERTH
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML? 3.0
PHASE INFORMATION
DATA USED
BAL e S 216.00 0.50 0.47 215.08 0.92 779.9 257 -40.3 40.3
COOL e P 91.50 0.10 0.78 91.63 -0.13 378.0 242 -42.2 42.2
COOL PG 100.60 0.50 0.81 101.00 -0.40 378.0 242 0.2 0.2
COOL e S 132.50 0.50 0.51 130.50 2.00 378.0 242 -40.3 40.3
COOL w SG 145.00 1.00 0.45 143.75 1.25 378.0 242 0.2 0.2
FORR e P 90.20 0.10 0.78 90.17 0.03 365.9 116 -42.2 42.2
FORR e PG 99.50 0.50 0.57 99.04 0.46 365.9 116 0.2 0.2
FORR e SN 129.50 1.00 0.30 127.97 1.53 365.9 116 -40.3 40.3
FORR SG 135.50 1.00 0.64 140.43 -4.93 365.9 116 0.2 0.2
KLB e S 200.00 0.50 0.48 199.72 0.28 706.9 247 -40.3 40.3
MBL P 168.00 2.00 0.41 170.40 -2.40 1029.7 330 -42.2 42.2
MEKA P 123.50 2.00 0.43 127.51 -4.01 674.7 295 -42.2 42.2
MUN e S 232.00 1.00 0.41 232.05 -0.05 860.5 248 -40.3 40.3
NANU S 298.00 5.00 0.28 301.16 -3.16 1188.9 307 -40.3 40.3
NWAO S 231.00 1.00 0.59 221.60 9.40 810.9 238 -40.3 40.3
WARB i-P 94.60 0.10 1.11 94.65 -0.05 403.0 29 -42.2 42.2
WARB e PG 104.00 0.50 0.56 105.09 -1.09 403.0 29 0.2 0.2
WARB i SG 146.00 0.50 0.72 150.67 -4.67 403.0 29 0.2 0.2
NO VELOCITY RATIOS
Start
Date 1991-03-15
Origin Time 0600 46.16 +- 0.80
Zone 50
Easting 498.15 +- 4.08 Longitude 116.980
Northing 6492.68 +- 4.97 Latitude -31.701
Depth 6.60 +- 25.95
Arrival times = 7 S.D. = 0.109 Seismographs = 4
Nearest recorder = 74.9 km Gap = 101.0 deg Accuracy = A
Effects Code = Imax = 0 Fault =
29 km NE ( 43 deg) of YORK
WESTERN AUSTRALIA
111 km E ( 76 deg) of PERTH
8 km S (200 deg) of Meckering
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.7
PHASE INFORMATION
DATA USED
BAL e P 66.20 0.20 0.75 66.18 0.02 124.1 347 -30.8 30.8
BAL e S 80.60 0.20 0.68 80.48 0.12 124.1 347 3.2 3.2
KLB e P 58.30 0.10 0.90 58.43 -0.13 74.9 80 5.3 5.3
KLB e S 67.00 0.10 0.81 66.93 0.07 74.9 80 5.3 5.3
MUN e P 59.00 0.10 0.90 59.13 -0.13 79.3 246 4.9 4.9
MUN e S 68.20 0.10 0.81 68.13 0.07 79.3 246 4.9 4.9
NWAO S 84.40 0.50 0.80 84.30 0.10 137.9 170 2.9 2.9
Velocity Ratios
KLB MUN BAL
KLB 1.72 0.00 1.72
0.02 0.00 0.11
MUN 0.00 1.72 1.72
0.00 0.02 0.12
BAL 1.72 1.72 1.72
0.11 0.12 0.03
Start
Date 1991-03-15
Origin Time 0715 56.59 +- 8.70
Zone 50
Easting 492.16 +- 50.12 Longitude 116.917
Northing 6494.00 +- 62.48 Latitude -31.689
Depth 9.49 +- 248.14
Arrival times = 5 S.D. = 0.167 Seismographs = 3
Nearest recorder = 74.3 km Gap = 161.7 deg Accuracy = C
Effects Code = Imax = 0 Fault =
26 km NE ( 32 deg) of YORK
WESTERN AUSTRALIA
105 km E ( 74 deg) of PERTH
11 km SW (233 deg) of Meckering
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.5
PHASE INFORMATION
DATA USED
BAL e P 76.00 0.50 0.63 76.03 -0.03 121.6 350 -30.8 30.8
BAL e S 90.30 0.20 0.68 90.30 0.00 121.6 350 4.6 4.6
KLB e P 69.80 0.10 0.90 69.84 -0.04 80.6 82 6.9 6.9
KLB e S 77.00 0.20 0.70 79.03 -2.03 80.6 82 6.9 6.9
MUN w P 69.00 0.10 0.92 68.82 0.18 74.3 244 7.5 7.5
MUN w S 77.00 0.50 0.60 77.30 -0.30 74.3 244 7.5 7.5
Velocity Ratios
MUN BAL
MUN 1.64 0.00
0.05 0.00
BAL 0.00 1.74
0.00 0.06
Start
Date 1991-03-16
Origin Time 0831 4.11 +- 61.07
Zone 50
Easting 404.13 +- 228.32 Longitude 115.971
Northing 6325.25 +- 262.72 Latitude -33.207
Depth 5.00 +- 423.58 N
Arrival times = 5 S.D. = 0.554 Seismographs = 3
Nearest recorder = 121.8 km Gap = 298.2 deg Accuracy = D
Effects Code = Imax = 0 Fault =
105 km NW (294 deg) of BEAU
WESTERN AUSTRALIA
145 km NE ( 32 deg) of AUGUSTA
140 km S (175 deg) of PERTH
25 km NW (317 deg) of Collie
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.8
PHASE INFORMATION
DATA USED
BAL e P 48.80 0.20 0.70 46.57 2.23 296.5 13 -40.9 40.9
BAL e S 78.20 0.20 0.63 78.61 -0.41 296.5 13 -39.8 39.8
KLB e P 40.20 0.20 0.71 40.30 -0.10 245.7 43 -40.9 40.9
KLB e S 66.70 0.20 0.64 67.58 -0.88 245.7 43 -39.8 39.8
NWAO e P 24.00 0.50 0.63 23.91 0.09 121.8 75 -31.2 31.2
NWAO e S 38.00 0.30 0.63 38.56 -0.56 121.8 75 2.5 2.5
Velocity Ratios
NWAO KLB
NWAO 1.70 1.77
0.06 0.11
KLB 1.77 1.73
0.11 0.02
Start
Date 1991-03-17
Origin Time 0938 26.55 +- 2.54
Zone 49
Easting 795.79 +- 22.93 Longitude 114.010
Northing 6888.97 +- 8.41 Latitude -28.092
Depth 5.00 +- 29.90 N
Arrival times = 9 S.D. = 0.422 Seismographs = 6
Nearest recorder = 383.2 km Gap = 219.5 deg Accuracy = C
Effects Code = Imax = 0 Fault =
43 km S (199 deg) of KBAR
WESTERN AUSTRALIA
463 km NW (337 deg) of PERTH
96 km NW (321 deg) of GERALDTON
47 km SW (203 deg) of Kalbarri
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML? 3.3
PHASE INFORMATION
DATA USED
BAL i P 79.20 0.20 0.97 79.00 0.20 383.2 137 -42.2 42.2
BAL i S 118.60 0.20 0.87 118.05 0.55 383.2 137 -40.3 40.3
COOL e P 126.00 1.00 0.46 124.78 1.22 761.6 115 -42.2 42.2
COOL e S 197.00 0.20 0.57 197.75 -0.75 761.6 115 -40.3 40.3
KLB e P 96.30 0.30 0.61 97.01 -0.71 532.1 138 -42.2 42.2
KLB e S 148.30 0.20 0.59 149.41 -1.11 532.1 138 -40.3 40.3
MBL e P 151.00 0.30 0.51 150.21 0.79 972.1 38 -42.2 42.2
MBL S 243.30 0.30 0.66 242.02 1.28 972.1 38 -40.3 40.3
MEKA e P 90.70 0.50 0.55 90.49 0.21 478.0 70 -42.2 42.2
MEKA S 139.00 0.30 0.79 138.05 0.95 478.0 70 -40.3 40.3
MUN i+P 90.70 0.10 1.09 90.81 -0.11 480.9 154 -42.2 42.2
MUN i S 138.50 0.20 0.85 138.62 -0.12 480.9 154 -40.3 40.3
NANU e P 109.50 0.50 0.54 109.23 0.27 633.4 13 -42.2 42.2
NANU e S 170.20 0.50 0.48 170.69 -0.49 633.4 13 -40.3 40.3
NWAO e P 106.70 0.30 0.60 107.64 -0.94 620.1 150 -42.2 42.2
NWAO e S 167.00 0.20 0.58 167.92 -0.92 620.1 150 -40.3 40.3
RKG e P 125.00 0.20 0.59 126.29 -1.29 774.3 159 -42.2 42.2
RKG e S 200.00 0.50 0.40 200.39 -0.39 774.3 159 -40.3 40.3
WARB e P 187.00 0.50 0.43 188.04 -1.04 1284.7 83 -42.2 42.2
WARB e S 310.00 3.00 0.23 307.89 2.11 1284.7 83 -40.3 40.3
Velocity Ratios
BAL MUN NANU
BAL 1.75 1.73 1.70
0.01 0.08 0.06
MUN 1.73 1.75 1.69
0.08 0.01 0.09
NANU 1.70 1.69 1.73
0.06 0.09 0.02
Start
Date 1991-03-18
Origin Time 0043 15.93 +- 1.80
Zone 50
Easting 436.78 +- 15.35 Longitude 116.338
Northing 6579.78 +- 6.91 Latitude -30.914
Depth 1.00 +- 38.62 C
Arrival times = 6 S.D. = 0.201 Seismographs = 3
Nearest recorder = 49.0 km Gap = 220.1 deg Accuracy = A
Effects Code = Imax = 0 Fault =
43 km W (260 deg) of PIG2
WESTERN AUSTRALIA
124 km N ( 22 deg) of PERTH
21 km NW (330 deg) of Calingiri
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.8
PHASE INFORMATION
DATA USED
BAL e P 23.80 0.10 0.94 23.93 -0.13 49.0 45 1.5 1.5
BAL e S 29.60 0.10 0.84 29.47 0.13 49.0 45 1.5 1.5
KLB e P 41.00 0.20 0.74 40.74 0.26 154.8 119 -30.8 30.8
KLB e S 58.50 0.20 0.67 58.70 -0.20 154.8 119 0.5 0.5
MUN e P 35.10 0.10 0.87 35.29 -0.19 118.7 185 0.6 0.6
MUN e S 48.90 0.10 0.78 48.71 0.19 118.7 185 0.6 0.6
Velocity Ratios
BAL MUN KLB
BAL 1.74 1.71 1.68
0.04 0.05 0.05
MUN 1.71 1.72 1.63
0.05 0.01 0.14
KLB 1.68 1.63 1.70
0.05 0.14 0.02
Start
Date 1991-03-24
Origin Time 0311 36.08 +- 125.83
Zone 50
Easting 392.74 +-1063.50 Longitude 115.962
Northing 7576.33 +- 255.39 Latitude -21.914
Depth 5.00 +- 459.87 N
Arrival times = 5 S.D. = 0.937 Seismographs = 4
Nearest recorder = 409.6 km Gap = 259.1 deg Accuracy = C
Effects Code = Imax = 0 Fault =
39 km S (169 deg) of LP05
WESTERN AUSTRALIA
161 km SW (209 deg) of Dampier
93 km E (110 deg) of Onslow
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 3.0
PHASE INFORMATION
DATA USED
BAL e P 157.00 1.00 0.45 158.97 -1.97 965.6 175 -42.2 42.2
BAL e S 255.00 1.00 0.40 250.21 4.79 965.6 175 -40.3 40.3
COOL w S 283.00 5.00 0.29 282.74 0.26 1120.0 153 -40.3 40.3
MBL e P 90.30 0.50 0.56 91.72 -1.42 409.6 78 -42.2 42.2
MBL e S 132.00 1.00 0.44 133.14 -1.14 409.6 78 -40.3 40.3
MEKA e P 112.50 0.10 0.75 112.63 -0.13 582.3 154 -42.2 42.2
MEKA w S 169.50 1.00 0.43 169.54 -0.04 582.3 154 -40.3 40.3
MEKA SG 197.00 0.50 0.70 196.94 0.06 582.3 154 0.5 0.5
MRWA S-P 76.50 0.50 0.75 77.21 -0.71 809.0 179 0.0 0.0
NANU S-P 9.00 2.00 0.70 9.58 -0.58 84.5 214 0.0 0.0
WARB e P 187.20 0.20 0.61 185.86 1.34 1187.9 115 -42.2 42.2
WARB e S 290.00 1.00 0.40 297.04 -7.04 1187.9 115 -40.3 40.3
NO VELOCITY RATIOS
Start
Date 1991-03-24
Origin Time 1613 33.60 +- 0.71
Zone 50
Easting 506.15 +- 4.19 Longitude 117.065
Northing 6504.17 +- 5.97 Latitude -31.597
Depth 6.79 +- 16.38
Arrival times = 7 S.D. = 0.141 Seismographs = 4
Nearest recorder = 66.0 km Gap = 106.9 deg Accuracy = A
Effects Code = Imax = 0 Fault =
30 km SE (138 deg) of GOO
WESTERN AUSTRALIA
122 km E ( 72 deg) of PERTH
6 km NE ( 55 deg) of Meckering
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.8
PHASE INFORMATION
DATA USED
BAL e P 52.50 0.10 0.87 52.35 0.15 115.0 342 -30.8 30.8
BAL e S 65.20 0.20 0.68 65.43 -0.23 115.0 342 3.5 3.5
KLB i P 44.40 0.10 1.30 44.43 -0.03 66.0 89 6.1 6.1
KLB i S 52.00 0.20 1.02 51.93 0.07 66.0 89 6.1 6.1
MUN e P 48.50 0.20 0.77 48.56 -0.06 91.4 242 4.4 4.4
MUN e S 59.10 0.20 0.70 58.93 0.17 91.4 242 4.4 4.4
NWAO w S 74.30 0.50 0.57 74.55 -0.25 148.2 173 -23.9 23.9
Velocity Ratios
KLB MUN BAL
KLB 1.70 0.00 1.63
0.03 0.00 0.09
MUN 0.00 1.71 0.00
0.00 0.04 0.00
BAL 1.63 0.00 1.67
0.09 0.00 0.02
Start
Date 1991-03-26
Origin Time 0433 31.62 +- 2.37
Zone 50
Easting 503.24 +- 11.48 Longitude 117.034
Northing 6612.25 +- 16.99 Latitude -30.622
Depth 1.00 +- 42.22 C
Arrival times = 6 S.D. = 0.193 Seismographs = 3
Nearest recorder = 31.4 km Gap = 234.4 deg Accuracy = A
Effects Code = Imax = 0 Fault =
5 km E ( 79 deg) of BK9
WESTERN AUSTRALIA
185 km NE ( 38 deg) of PERTH
17 km SW (229 deg) of Burakin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.1
PHASE INFORMATION
DATA USED
BAL S-P 3.60 0.10 1.38 3.55 0.05 31.4 273 0.0 0.0
BAL i-P 36.70 0.10 1.38 36.75 -0.05 31.4 273 2.4 2.4
BAL e S 40.30 0.10 0.87 40.30 0.00 31.4 273 2.4 2.4
KLB S-P 14.50 0.10 1.23 14.46 0.04 127.8 147 0.0 0.0
KLB e P 52.40 0.10 0.86 52.47 -0.07 127.8 147 0.6 0.6
KLB e S 66.90 0.10 0.78 66.93 -0.03 127.8 147 0.6 0.6
MUN S-P 18.50 0.30 0.97 19.98 -1.48 169.6 207 0.0 0.0
MUN e P 59.00 0.30 0.68 58.49 0.51 169.6 207 -30.8 30.8
MUN e S 78.30 0.20 0.66 78.47 -0.17 169.6 207 0.4 0.4
Velocity Ratios
BAL KLB MUN
BAL 1.71 1.69 1.70
0.05 0.03 0.04
KLB 1.69 1.70 1.73
0.03 0.01 0.16
MUN 1.70 1.73 1.70
0.04 0.16 0.03
Start
Date 1991-03-27
Origin Time 0902 43.70 +- 7.90
Zone 50
Easting 418.49 +- 37.72 Longitude 116.128
Northing 6358.09 +- 37.23 Latitude -32.912
Depth 5.00 +- 32.25 N
Arrival times = 7 S.D. = 0.673 Seismographs = 4
Nearest recorder = 103.3 km Gap = 273.0 deg Accuracy = D
Effects Code = Imax = 0 Fault =
92 km SW (240 deg) of PING
WESTERN AUSTRALIA
181 km NE ( 30 deg) of AUGUSTA
110 km S (166 deg) of PERTH
34 km W (249 deg) of Boddington
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign -10.0
PHASE INFORMATION
DATA USED
BAL e P 82.00 1.00 0.51 81.42 0.58 261.4 12 -42.2 42.2
KLB e P 76.30 0.30 0.66 75.49 0.81 212.3 46 -42.2 42.2
KLB e S 100.00 0.50 0.54 99.22 0.78 212.3 46 -40.3 40.3
MUN e P 60.00 0.50 0.64 60.66 -0.66 103.8 4 2.9 2.9
MUN e S 72.00 0.50 0.57 72.42 -0.42 103.8 4 2.9 2.9
NWAO e P 60.00 0.50 0.64 60.58 -0.58 103.3 91 2.9 2.9
NWAO e S 72.00 0.50 0.57 72.28 -0.28 103.3 91 2.9 2.9
Velocity Ratios
NWAO MUN KLB
NWAO 1.74 0.00 1.72
0.09 0.00 0.15
MUN 0.00 1.74 1.72
0.00 0.09 0.15
KLB 1.72 1.72 1.73
0.15 0.15 0.03
Start
Date 1991-03-28
Origin Time 0625 49.68 +- 4.66
Zone 50
Easting 501.99 +- 20.98 Longitude 117.021
Northing 6611.34 +- 30.96 Latitude -30.630
Depth 1.00 +- 66.49 C
Arrival times = 6 S.D. = 0.415 Seismographs = 3
Nearest recorder = 30.2 km Gap = 231.9 deg Accuracy = A
Effects Code = Imax = 0 Fault =
3 km E ( 89 deg) of BK9
WESTERN AUSTRALIA
184 km NE ( 38 deg) of PERTH
19 km NW (326 deg) of Cadoux
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.8
PHASE INFORMATION
DATA USED
BAL e P 54.50 0.10 0.97 54.61 -0.11 30.2 274 2.5 2.5
BAL e S 58.00 0.10 0.87 58.03 -0.03 30.2 274 2.5 2.5
KLB e P 70.20 0.20 0.75 70.52 -0.32 127.7 146 0.6 0.6
KLB e S 85.00 0.30 0.62 84.97 0.03 127.7 146 0.6 0.6
MRWA S-P 21.00 1.00 0.75 21.59 -0.59 185.2 327 0.0 0.0
MUN e P 77.20 0.20 0.73 76.35 0.85 168.2 207 -30.8 30.8
MUN e S 95.80 0.20 0.66 96.15 -0.35 168.2 207 0.4 0.4
Velocity Ratios
BAL KLB MUN
BAL 1.73 1.72 1.67
0.06 0.06 0.04
KLB 1.72 1.72 1.54
0.06 0.03 0.17
MUN 1.67 1.54 1.68
0.04 0.17 0.02
Start
Date 1991-03-28
Origin Time 1156 47.13 +- 4.87
Zone 50
Easting 503.14 +- 19.43 Longitude 117.033
Northing 6613.00 +- 48.30 Latitude -30.615
Depth 5.00 +- 29.44 N
Arrival times = 6 S.D. = 0.293 Seismographs = 3
Nearest recorder = 31.3 km Gap = 235.9 deg Accuracy = B
Effects Code = Imax = 0 Fault =
5 km E ( 70 deg) of BK9
WESTERN AUSTRALIA
186 km NE ( 38 deg) of PERTH
17 km SW (231 deg) of Burakin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.8
PHASE INFORMATION
DATA USED
BAL e P 52.10 0.10 0.97 52.30 -0.20 31.3 271 9.6 9.6
BAL e S 56.00 0.10 0.87 55.89 0.11 31.3 271 9.6 9.6
KLB e P 68.00 0.30 0.69 67.92 0.08 128.5 147 -30.8 30.8
KLB e S 82.50 0.50 0.56 82.66 -0.16 128.5 147 2.4 2.4
MUN e P 74.30 0.30 0.68 73.75 0.55 170.2 207 -30.8 30.8
MUN e S 93.50 0.20 0.66 93.79 -0.29 170.2 207 -40.3 40.3
Velocity Ratios
BAL KLB MUN
BAL 1.79 1.67 1.69
0.06 0.08 0.04
KLB 1.67 1.69 0.00
0.08 0.05 0.00
MUN 1.69 0.00 1.71
0.04 0.00 0.03
Start
Date 1991-03-29
Origin Time 2254 16.71 +- 2.75
Zone 50
Easting 501.88 +- 12.58 Longitude 117.020
Northing 6611.09 +- 16.73 Latitude -30.633
Depth 1.00 +- 55.56 C
Arrival times = 6 S.D. = 0.258 Seismographs = 3
Nearest recorder = 30.1 km Gap = 231.3 deg Accuracy = B
Effects Code = Imax = 0 Fault =
3 km E ( 93 deg) of BK9
WESTERN AUSTRALIA
184 km NE ( 38 deg) of PERTH
19 km NW (325 deg) of Cadoux
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.3
PHASE INFORMATION
DATA USED
BAL i P 21.60 0.10 1.39 21.63 -0.03 30.1 275 2.5 2.5
BAL e S 25.00 0.30 0.70 25.04 -0.04 30.1 275 2.5 2.5
COOL PG 80.00 2.00 0.45 81.32 -1.32 396.0 95 0.2 0.2
COOL S 109.00 0.50 0.62 111.68 -2.68 396.0 95 -40.3 40.3
KLB e P 37.20 0.20 0.75 37.53 -0.33 127.6 146 0.6 0.6
KLB i S 52.00 0.10 1.11 51.96 0.04 127.6 146 0.6 0.6
MUN e P 44.00 0.20 0.73 43.35 0.65 167.9 207 -30.8 30.8
MUN i S 63.00 0.10 1.08 63.11 -0.11 167.9 207 0.4 0.4
NWAO w SG 86.00 0.50 0.64 87.17 -1.17 255.1 175 0.3 0.3
Velocity Ratios
BAL KLB MUN
BAL 1.70 1.73 1.70
0.10 0.06 0.04
KLB 1.73 1.72 1.62
0.06 0.02 0.13
MUN 1.70 1.62 1.70
0.04 0.13 0.02
Start
Date 1991-03-31
Origin Time 1428 3.16 +- 6.90
Zone 50
Easting 503.84 +- 26.31 Longitude 117.040
Northing 6615.12 +- 57.01 Latitude -30.596
Depth 4.82 +- 31.97
Arrival times = 6 S.D. = 0.442 Seismographs = 3
Nearest recorder = 32.0 km Gap = 240.6 deg Accuracy = B
Effects Code = Imax = 0 Fault =
6 km NE ( 55 deg) of BK9
WESTERN AUSTRALIA
188 km NE ( 37 deg) of PERTH
15 km SW (236 deg) of Burakin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.7
PHASE INFORMATION
DATA USED
BAL e P 8.20 0.10 0.97 8.45 -0.25 32.0 267 9.1 9.1
BAL e S 12.20 0.10 0.87 12.11 0.09 32.0 267 9.1 9.1
KLB e P 24.10 0.20 0.75 24.16 -0.06 129.9 148 -30.8 30.8
KLB e S 39.00 0.10 0.78 39.09 -0.09 129.9 148 2.3 2.3
MUN e P 31.00 0.20 0.73 30.11 0.89 172.4 207 -30.8 30.8
MUN e S 49.80 0.20 0.66 50.32 -0.52 172.4 207 -40.3 40.3
Velocity Ratios
BAL KLB MUN
BAL 1.79 1.69 1.65
0.06 0.05 0.04
KLB 1.69 1.71 1.57
0.05 0.02 0.14
MUN 1.65 1.57 1.68
0.04 0.14 0.02