Data Report
Bulletin / 1998-03
Contributed by CUPWA
Date 1998-03-03
Origin Time 1828 19.28 +- 0.53
Zone 50
Easting 518.75 +- 8.09 Longitude 117.201
Northing 6351.31 +- 4.02 Latitude -32.976
Depth 3.83 +- 4.88
Arrival times = 11 S.D. = 0.385 Seismographs = 5
Nearest recorder = 6.3 km Gap = 156.7 deg Accuracy = A
Effects Code = Imax = 0 Fault =
6 km SW (208 deg) of NWAO
WESTERN AUSTRALIA
233 km N (344 deg) of ALBANY
171 km SE (132 deg) of PERTH
44 km N ( 21 deg) of Arthur River
Record Dur Sync Unc Resp Seismometer Recorder Pol
NWAO -0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.9
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i+P 20.40 0.10 1.54 20.50 -0.10 6.3 28 33.0 33.0
NWAO i S 21.40 0.10 1.39 21.35 0.05 6.3 28 33.0 33.0
MUN e P 41.50 1.00 0.54 42.42 -0.92 144.7 319 -30.8 30.8
MUN e PMP 43.50 0.20 0.45 43.32 0.18 144.7 319 -36.1 36.1
MUN e S 59.50 0.30 0.62 59.26 0.24 144.7 319 1.6 1.6
KLB e P 45.00 0.10 0.85 44.89 0.11 162.3 19 -30.8 30.8
KLB e S 64.10 0.10 0.76 64.12 -0.02 162.3 19 -23.9 23.9
RKG e P 47.70 0.10 0.84 47.00 0.70 177.6 185 -42.2 42.2
RKG e S 67.00 0.20 0.66 67.71 -0.71 177.6 185 -40.3 40.3
RKG i SMS 69.40 0.10 0.60 69.37 0.03 177.6 185 -29.0 29.0
BAL e SMS 91.70 0.50 0.29 91.30 0.40 266.8 349 -25.9 25.9
11 times used, S = 0.385
Deferred Data
MRWA e SG 136.00 1.00 0.44 138.64 -2.64 432.1 344 0.5 0.5
Velocity Ratios
NWAO MUN KLB RKG
NWAO 1.89 1.81 1.74 1.67
0.28 0.12 0.02 0.02
MUN 1.81 1.81 0.00 0.00
0.12 0.10 0.00 0.00
KLB 1.74 0.00 1.74 0.00
0.02 0.00 0.01 0.00
RKG 1.67 0.00 0.00 1.68
0.02 0.00 0.00 0.01
Date 1998-03-04
Origin Time 1144 23.48 +- 22.47
Zone 50
Easting 310.54 +- 495.54 Longitude 115.146
Northing 7410.61 +- 995.11 Latitude -23.403
Depth 5.00 +-1373.21 N
Arrival times = 7 S.D. = 0.460 Seismographs = 4
Nearest recorder = 500.7 km Gap = 322.6 deg Accuracy = C
Effects Code = Imax = 0 Fault =
67 km SE (114 deg) of LP03
WESTERN AUSTRALIA
950 km N (356 deg) of PERTH
345 km SW (208 deg) of Dampier
195 km SE (148 deg) of Exmouth
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.6
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
MEEK i P 90.00 0.10 1.09 90.18 -0.18 500.7 136 -42.2 42.2
MEEK e S 140.10 0.30 0.55 139.78 0.32 500.7 136 -40.3 40.3
MRWA e P 108.00 0.30 0.59 108.16 -0.16 649.7 172 -42.2 42.2
BAL e P 129.00 0.50 0.52 127.89 1.11 812.8 169 -42.2 42.2
BAL e S 205.00 0.50 0.47 205.45 -0.45 812.8 169 -40.3 40.3
MUN e P 145.00 0.30 0.57 145.18 -0.18 955.8 173 -42.2 42.2
MUN e S 235.50 0.50 0.46 235.54 -0.04 955.8 173 -40.3 40.3
7 times used, S = 0.460
Deferred Data
MRWA e S 167.50 0.30 0.54 171.10 -3.60 649.7 172 -40.3 40.3
Velocity Ratios
MEEK BAL MUN
MEEK 1.75 1.66 1.73
0.01 0.05 0.03
BAL 1.66 1.72 1.91
0.05 0.01 0.17
MUN 1.73 1.91 1.74
0.03 0.17 0.01
Date 1998-03-07
Origin Time 1548 13.15 +- 0.38
Zone 50
Easting 565.27 +- 2.55 Longitude 117.687
Northing 6517.14 +- 2.41 Latitude -31.479
Depth 3.17 +- 5.71
Arrival times = 8 S.D. = 0.121 Seismographs = 4
Nearest recorder = 14.3 km Gap = 195.4 deg Accuracy = A
Effects Code = Imax = 0 Fault =
3 km E ( 88 deg) of KBS
WESTERN AUSTRALIA
182 km E ( 74 deg) of PERTH
17 km N (349 deg) of Kellerberrin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.4
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB i P 15.60 0.10 1.46 15.55 0.05 14.3 151 13.6 13.6
KLB i S 17.20 0.10 1.32 17.22 -0.02 14.3 151 13.6 13.6
BAL i P 35.10 0.10 1.23 34.93 0.17 134.5 315 -30.8 30.8
BAL i S 50.10 0.10 1.11 50.32 -0.22 134.5 315 1.5 1.5
MUN i P 37.20 0.10 1.22 37.18 0.02 150.6 247 -30.8 30.8
MUN i S 54.90 0.10 1.09 54.78 0.12 150.6 247 1.3 1.3
NWAO i P 39.30 0.10 1.21 39.35 -0.05 166.1 194 -30.8 30.8
NWAO i S 58.90 0.10 1.09 59.03 -0.13 166.1 194 -23.9 23.9
8 times used, S = 0.121
Deferred Data
MEEK e P 85.80 0.50 0.47 85.27 0.53 543.9 9 -42.2 42.2
MEEK e S 139.40 1.00 0.34 138.87 0.53 543.9 9 -40.3 40.3
MEEK e SG 159.00 2.00 0.28 163.41 -4.41 543.9 9 0.4 0.4
Velocity Ratios
KLB BAL MUN NWAO
KLB 1.65 1.69 1.75 1.76
0.11 0.03 0.03 0.02
BAL 1.69 1.68 0.00 2.10
0.03 0.01 0.00 0.15
MUN 1.75 0.00 1.74 0.00
0.03 0.00 0.01 0.00
NWAO 1.76 2.10 0.00 1.75
0.02 0.15 0.00 0.01
Date 1998-03-09
Origin Time 2206 59.87 +- 2.32
Zone 49
Easting 441.58 +- 105.33 Longitude 110.382
Northing 6466.23 +- 12.80 Latitude -31.938
Depth 5.00 +- 128.91 N
Arrival times = 11 S.D. = 0.487 Seismographs = 6
Nearest recorder = 551.0 km Gap = 304.9 deg Accuracy = D
Effects Code = Imax = 0 Fault =
505 km W (290 deg) of ABUS
517 km W (269 deg) of PERTH
Place names undefined for this area
Record Dur Sync Unc Resp Seismometer Recorder Pol
MUN -0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.6
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
MUN e P 132.60 0.30 0.60 132.61 -0.01 551.0 92 -42.2 42.2
MUN e S 186.70 0.50 0.49 186.70 -0.00 551.0 92 -40.3 40.3
MRWA e P 140.70 0.50 0.54 140.64 0.06 617.4 62 -42.2 42.2
MRWA e S 200.80 0.20 0.58 200.68 0.12 617.4 62 -40.3 40.3
BAL e P 140.00 0.30 0.60 141.02 -1.02 620.5 77 -42.2 42.2
BAL e S 201.90 0.20 0.58 201.34 0.56 620.5 77 -40.3 40.3
NWAO e P 145.00 0.10 0.74 145.07 -0.07 654.1 101 -42.2 42.2
NWAO e S 207.80 0.30 0.53 208.40 -0.60 654.1 101 -40.3 40.3
RKG e P 149.30 0.20 0.64 148.63 0.67 683.5 117 -42.2 42.2
RKG e S 214.50 0.30 0.53 214.59 -0.09 683.5 117 -40.3 40.3
KLB e P 151.00 0.50 0.53 150.72 0.28 700.7 88 -42.2 42.2
11 times used, S = 0.487
Deferred Data
MEEK e P 184.90 0.30 0.57 186.17 -1.27 993.7 55 -42.2 42.2
MEEK e S 278.50 1.00 0.40 279.94 -1.44 993.7 55 -40.3 40.3
Velocity Ratios
MUN MRWA BAL NWAO RKG
MUN 1.74 0.00 0.00 1.70 1.66
0.01 0.00 0.00 0.12 0.10
MRWA 0.00 1.74 0.00 0.00 0.00
0.00 0.01 0.00 0.00 0.00
BAL 0.00 0.00 1.77 0.00 1.35
0.00 0.00 0.01 0.00 0.13
NWAO 1.70 0.00 0.00 1.74 0.00
0.12 0.00 0.00 0.01 0.00
RKG 1.66 0.00 1.35 0.00 1.73
0.10 0.00 0.13 0.00 0.01
Date 1998-03-11
Origin Time 1611 9.86 +- 0.39
Zone 50
Easting 563.87 +- 3.37 Longitude 117.672
Northing 6518.42 +- 2.95 Latitude -31.467
Depth 2.74 +- 8.80
Arrival times = 9 S.D. = 0.191 Seismographs = 5
Nearest recorder = 16.1 km Gap = 182.2 deg Accuracy = A
Effects Code = Imax = 0 Fault =
2 km NE ( 58 deg) of KBS
WESTERN AUSTRALIA
181 km E ( 73 deg) of PERTH
19 km N (346 deg) of Kellerberrin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.5
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB i P 12.50 0.10 1.45 12.53 -0.03 16.1 149 10.7 10.7
KLB i S 14.40 0.10 1.31 14.39 0.01 16.1 149 10.7 10.7
BAL i P 31.60 0.10 1.23 31.40 0.20 132.6 315 -30.8 30.8
BAL i S 46.40 0.10 1.11 46.50 -0.10 132.6 315 1.3 1.3
MUN i P 33.50 0.10 1.22 33.81 -0.31 149.8 247 -30.8 30.8
MUN i S 51.40 0.10 1.10 51.25 0.15 149.8 247 1.1 1.1
NWAO e P 36.60 0.50 0.61 36.22 0.38 167.0 194 -30.8 30.8
NWAO e S 56.00 0.10 0.76 55.99 0.01 167.0 194 1.0 1.0
MRWA e SMS 89.60 0.20 0.35 89.48 0.12 296.8 326 -25.4 25.4
9 times used, S = 0.191
Velocity Ratios
KLB BAL MUN NWAO
KLB 1.72 1.68 1.76 1.73
0.11 0.03 0.03 0.05
BAL 1.68 1.68 0.00 0.00
0.03 0.01 0.00 0.00
MUN 1.76 0.00 1.76 0.00
0.03 0.00 0.01 0.00
NWAO 1.73 0.00 0.00 1.73
0.05 0.00 0.00 0.04
Date 1998-03-12
Origin Time 1240 16.12 +- 2.71
Zone 50
Easting 123.56 +- 19.58 Longitude 113.308
Northing 7368.53 +- 8.63 Latitude -23.750
Depth 5.00 +- 15.49 N
Arrival times = 19 S.D. = 0.990 Seismographs = 10
Nearest recorder = 155.2 km Gap = 234.4 deg Accuracy = C
Effects Code = Imax = 0 Fault =
142 km SW (242 deg) of LP03
WESTERN AUSTRALIA
942 km N (344 deg) of PERTH
130 km N (344 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 3.2
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
GIRL e P 40.90 0.20 0.74 40.62 0.28 155.2 37 -30.8 30.8
MEEK e P 97.80 0.30 0.60 97.61 0.19 623.1 122 -42.2 42.2
MEEK e S 159.70 0.50 0.49 158.18 1.52 623.1 122 -40.3 40.3
MRWA e P 102.50 0.20 0.64 102.36 0.14 662.6 156 -42.2 42.2
MRWA e S 165.70 0.30 0.53 166.46 -0.76 662.6 156 -40.3 40.3
BAL e P 123.00 0.50 0.52 122.74 0.26 831.1 156 -42.2 42.2
MUN e P 139.40 0.50 0.52 137.80 1.60 955.7 163 -42.2 42.2
MUN e SG 280.00 1.00 0.40 280.13 -0.13 955.7 163 0.3 0.3
KLB e S 232.00 1.00 0.40 231.90 0.10 973.5 154 -40.3 40.3
KLB e SG 286.00 1.00 0.40 285.04 0.96 973.5 154 0.3 0.3
NWAO e P 153.00 1.00 0.44 153.71 -0.71 1087.3 160 -42.2 42.2
NWAO e S 255.50 1.00 0.40 255.85 -0.35 1087.3 160 -40.3 40.3
NWAO e SG 315.00 2.00 0.35 316.48 -1.48 1087.3 160 0.3 0.3
WARB e P 187.30 0.50 0.51 188.65 -1.35 1376.0 104 -42.2 42.2
WARB e S 317.60 0.50 0.46 316.68 0.92 1376.0 104 -40.3 40.3
FITZ e P 195.70 0.30 0.56 195.03 0.67 1429.2 66 -42.2 42.2
FITZ e S 326.40 0.50 0.46 327.80 -1.40 1429.2 66 -40.3 40.3
FORT e P 220.80 0.50 0.51 222.87 -2.07 1659.3 121 -42.2 42.2
FORT e S 376.20 0.50 0.46 376.26 -0.06 1659.3 121 -40.3 40.3
19 times used, S = 0.990
Deferred Data
GIRL e S 64.50 0.50 0.55 59.00 5.50 155.2 37 1.9 1.9
GIRL e SG 70.00 1.00 0.48 59.00 11.00 155.2 37 1.9 1.9
MEEK e SG 191.30 1.00 0.42 188.26 3.04 623.1 122 0.5 0.5
BAL e SG 249.50 1.00 0.41 245.71 3.79 831.1 156 0.4 0.4
MUN e S 230.50 0.50 0.46 228.15 2.35 955.7 163 -40.3 40.3
WARB e SG 409.10 1.00 0.40 396.24 12.86 1376.0 104 0.2 0.2
Velocity Ratios
MEEK MRWA NWAO WARB FITZ FORT
MEEK 1.76 0.00 1.74 1.76 1.70 1.76
0.01 0.00 0.07 0.03 0.02 0.02
MRWA 0.00 1.73 1.78 1.79 1.72 1.78
0.00 0.01 0.07 0.02 0.02 0.02
NWAO 1.74 1.78 1.75 1.81 1.66 1.78
0.07 0.07 0.02 0.13 0.09 0.06
WARB 1.76 1.79 1.81 1.76 0.00 1.75
0.03 0.02 0.13 0.01 0.00 0.08
FITZ 1.70 1.72 1.66 0.00 1.73 1.98
0.02 0.02 0.09 0.00 0.01 0.11
FORT 1.76 1.78 1.78 1.75 1.98 1.76
0.02 0.02 0.06 0.08 0.11 0.01
Date 1998-03-13
Origin Time 0657 33.35 +- 1.61
Zone 51
Easting 422.33 +- 4.12 Longitude 122.182
Northing 6518.55 +- 7.55 Latitude -31.465
Depth 5.00 +- 13.04 N
Arrival times = 19 S.D. = 0.700 Seismographs = 9
Nearest recorder = 420.6 km Gap = 149.0 deg Accuracy = B
Effects Code = Imax = 0 Fault =
29 km E (111 deg) of KMBL
WESTERN AUSTRALIA
603 km E ( 87 deg) of PERTH
90 km NE ( 25 deg) of NORSEMAN
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 3.7
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB e P 90.00 0.10 0.77 90.32 -0.32 420.6 266 -42.2 42.2
KLB e S 133.00 0.10 0.70 132.72 0.28 420.6 266 -40.3 40.3
NWAO e S 149.70 1.00 0.43 148.27 1.43 494.4 249 -40.3 40.3
BAL e P 104.00 0.10 0.76 103.80 0.20 532.0 278 -42.2 42.2
BAL e S 156.50 0.10 0.68 156.18 0.32 532.0 278 -40.3 40.3
FORT e P 107.40 0.20 0.65 107.83 -0.43 565.5 83 -42.2 42.2
FORT e S 164.70 0.30 0.54 163.21 1.49 565.5 83 -40.3 40.3
MUN e P 108.00 0.10 0.75 108.37 -0.37 569.9 262 -42.2 42.2
MUN e S 164.00 0.10 0.68 164.15 -0.15 569.9 262 -40.3 40.3
RKG e P 112.00 0.30 0.60 111.28 0.72 593.8 233 -42.2 42.2
RKG e S 170.50 0.50 0.49 169.21 1.29 593.8 233 -40.3 40.3
RKG e S2 186.40 0.10 0.37 187.04 -0.64 593.8 233 -23.9 23.9
RKG e SG 196.00 0.50 0.49 197.40 -1.40 593.8 233 0.5 0.5
MEEK i-P 116.20 0.10 1.06 116.67 -0.47 638.2 326 -42.2 42.2
MEEK e SG 210.40 0.50 0.48 209.66 0.74 638.2 326 0.5 0.5
MRWA e P 117.00 0.10 0.74 117.57 -0.57 645.9 291 -42.2 42.2
MRWA e S 181.00 0.10 0.67 180.16 0.84 645.9 291 -40.3 40.3
WARB i-P 127.60 0.10 1.05 127.68 -0.08 729.4 37 -42.2 42.2
WARB e SG 233.50 0.30 0.47 234.83 -1.33 729.4 37 0.4 0.4
19 times used, S = 0.700
Deferred Data
NWAO e P 102.70 2.00 0.42 99.25 3.45 494.4 249 -42.2 42.2
NWAO e SMS 163.80 2.00 0.21 162.30 1.50 494.4 249 -24.4 24.4
MEEK e S 181.40 0.30 0.54 178.59 2.81 638.2 326 -40.3 40.3
WARB e S 199.90 0.20 0.57 197.76 2.14 729.4 37 -40.3 40.3
GIRL e P 191.90 0.50 0.43 191.70 0.20 1259.1 319 -42.2 42.2
GIRL e S 303.20 2.00 0.26 309.22 -6.02 1259.1 319 -40.3 40.3
GIRL e SG 385.20 1.00 0.32 381.17 4.03 1259.1 319 0.2 0.2
FITZ e P 221.00 0.30 0.50 223.29 -2.29 1520.5 13 -42.2 42.2
FITZ e S 362.00 1.00 0.32 364.23 -2.23 1520.5 13 -40.3 40.3
Velocity Ratios
KLB BAL FORT MUN RKG MRWA
KLB 1.76 1.68 1.82 1.72 1.70 1.78
0.00 0.04 0.06 0.03 0.06 0.02
BAL 1.68 1.74 0.00 1.88 1.75 1.88
0.04 0.00 0.00 0.15 0.17 0.05
FORT 1.82 0.00 1.77 -1.17 0.00 1.70
0.06 0.00 0.01 0.17 0.00 0.10
MUN 1.72 1.88 -1.17 1.75 0.00 1.89
0.03 0.15 0.17 0.00 0.00 0.07
RKG 1.70 1.75 0.00 0.00 1.74 0.00
0.06 0.17 0.00 0.00 0.01 0.00
MRWA 1.78 1.88 1.70 1.89 0.00 1.77
0.02 0.05 0.10 0.07 0.00 0.00
Date 1998-03-14
Origin Time 0733 7.38 +- 1.42
Zone 50
Easting 751.73 +- 5.29 Longitude 119.550
Northing 6948.29 +- 5.99 Latitude -27.566
Depth 5.00 +- 13.07 N
Arrival times = 17 S.D. = 0.637 Seismographs = 7
Nearest recorder = 138.5 km Gap = 121.4 deg Accuracy = B
Effects Code = F Imax = 4 Fault =
138 km SE (138 deg) of MEEK
WESTERN AUSTRALIA
603 km NE ( 37 deg) of PERTH
177 km E ( 72 deg) of Mt Magnet
151 km SE (137 deg) of MEEKATHARRA
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.8
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
MEEK e P 29.50 0.20 0.75 29.58 -0.08 138.5 317 -30.8 30.8
MEEK e S 45.50 0.20 0.67 45.67 -0.17 138.5 317 2.3 2.3
MRWA e P 61.80 0.20 0.68 61.06 0.74 393.4 241 -42.2 42.2
MRWA e PG 70.80 0.20 0.68 71.55 -0.75 393.4 241 0.8 0.8
MRWA e S 102.00 0.30 0.56 101.03 0.97 393.4 241 -40.3 40.3
MRWA e SG 116.20 0.30 0.56 116.05 0.15 393.4 241 0.8 0.8
BAL e P 66.00 1.00 0.49 66.22 -0.22 436.0 218 -42.2 42.2
BAL e S 110.00 0.50 0.50 110.01 -0.01 436.0 218 -40.3 40.3
BAL e SG 127.30 0.50 0.50 127.83 -0.53 436.0 218 0.7 0.7
KLB e P 72.50 1.00 0.48 71.38 1.12 478.7 200 -42.2 42.2
KLB e S 119.00 1.00 0.43 119.00 0.00 478.7 200 -40.3 40.3
MUN e P 84.50 1.00 0.47 84.35 0.15 586.0 212 -42.2 42.2
MUN e S 140.70 0.50 0.49 141.58 -0.88 586.0 212 -40.3 40.3
WARB e P 101.60 0.50 0.53 101.13 0.47 724.5 79 -42.2 42.2
WARB e S 170.80 1.00 0.42 170.78 0.02 724.5 79 -40.3 40.3
FORT e P 121.80 0.50 0.52 123.11 -1.31 906.6 115 -42.2 42.2
FORT e S 209.10 0.30 0.52 209.06 0.04 906.6 115 -40.3 40.3
17 times used, S = 0.637
Deferred Data
MUN e SG 167.30 0.50 0.49 169.26 -1.96 586.0 212 0.5 0.5
WARB e SG 203.60 0.50 0.48 207.53 -3.93 724.5 79 0.4 0.4
GIRL e P 107.00 2.00 0.40 105.91 1.09 764.5 314 -42.2 42.2
GIRL e S 182.50 2.00 0.36 179.12 3.38 764.5 314 -40.3 40.3
Velocity Ratios
MEEK MRWA BAL KLB MUN WARB FORT
MEEK 1.72 1.75 1.77 1.71 1.73 1.74 1.77
0.02 0.04 0.08 0.08 0.05 0.03 0.02
MRWA 1.75 1.74 0.00 0.00 1.70 1.73 1.79
0.04 0.01 0.00 0.00 0.13 0.06 0.03
BAL 1.77 0.00 1.75 0.00 0.00 1.71 1.78
0.08 0.00 0.04 0.00 0.00 0.12 0.06
KLB 1.71 0.00 0.00 1.71 0.00 1.78 1.83
0.08 0.00 0.00 0.04 0.00 0.17 0.08
MUN 1.73 1.70 0.00 0.00 1.73 0.00 1.83
0.05 0.13 0.00 0.00 0.03 0.00 0.10
WARB 1.74 1.73 1.71 1.78 0.00 1.73 1.90
0.03 0.06 0.12 0.17 0.00 0.02 0.17
FORT 1.77 1.79 1.78 1.83 1.83 1.90 1.76
0.02 0.03 0.06 0.08 0.10 0.17 0.01
Date 1998-03-14
Origin Time 1955 31.60 +- 0.53
Zone 50
Easting 525.65 +- 3.38 Longitude 117.269
Northing 6548.03 +- 4.09 Latitude -31.201
Depth 1.85 +- 12.52
Arrival times = 8 S.D. = 0.135 Seismographs = 4
Nearest recorder = 63.6 km Gap = 172.3 deg Accuracy = A
Effects Code = Imax = 0 Fault =
28 km W (277 deg) of WYAL
WESTERN AUSTRALIA
158 km NE ( 59 deg) of PERTH
23 km E ( 90 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 1.8
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB e P 42.30 0.30 0.74 41.99 0.31 63.6 133 1.9 1.9
KLB i S 49.10 0.10 1.18 49.19 -0.09 63.6 133 1.9 1.9
BAL e P 45.40 0.30 0.72 45.48 -0.08 85.1 320 1.4 1.4
BAL e S 55.10 0.20 0.70 55.10 -0.00 85.1 320 1.4 1.4
MUN e P 53.20 0.20 0.75 53.20 0.00 132.5 229 -30.8 30.8
MUN e S 68.20 0.20 0.67 68.20 0.00 132.5 229 0.9 0.9
NWAO e P 61.20 0.20 0.73 61.19 0.01 191.3 181 -42.2 42.2
NWAO e S2 83.90 0.30 0.33 83.98 -0.08 191.3 181 -23.9 23.9
8 times used, S = 0.135
Deferred Data
MRWA e S2 98.50 0.50 0.29 99.23 -0.73 251.6 330 -23.9 23.9
Velocity Ratios
KLB BAL MUN
KLB 1.64 0.00 1.75
0.06 0.00 0.11
BAL 0.00 1.70 1.68
0.00 0.05 0.17
MUN 1.75 1.68 1.69
0.11 0.17 0.03
Date 1998-03-16
Origin Time 0536 55.67 +- 0.62
Zone 50
Easting 572.50 +- 5.64 Longitude 117.763
Northing 6522.36 +- 3.39 Latitude -31.431
Depth 5.82 +- 3.69
Arrival times = 8 S.D. = 0.122 Seismographs = 4
Nearest recorder = 17.8 km Gap = 228.8 deg Accuracy = A
Effects Code = Imax = 0 Fault =
11 km SE (125 deg) of KBN
WESTERN AUSTRALIA
190 km E ( 73 deg) of PERTH
22 km N ( 10 deg) of Kellerberrin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.1
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB i P 58.80 0.10 1.44 58.75 0.05 17.8 180 19.0 19.0
KLB i S 60.80 0.10 1.30 60.88 -0.08 17.8 180 19.0 19.0
BAL e S 93.40 0.20 0.67 93.29 0.11 136.0 312 2.6 2.6
MUN i P 80.50 0.10 1.21 80.70 -0.20 159.3 247 -30.8 30.8
MUN i S 99.60 0.10 1.09 99.53 0.07 159.3 247 -23.9 23.9
NWAO i P 82.70 0.10 1.20 82.63 0.07 173.1 196 -42.2 42.2
NWAO e S2 103.10 0.20 0.37 103.03 0.07 173.1 196 -23.9 23.9
NWAO e SG 103.70 0.20 0.66 103.53 0.17 173.1 196 2.0 2.0
8 times used, S = 0.122
Deferred Data
BAL e P 78.30 0.20 0.75 77.44 0.86 136.0 312 -30.8 30.8
NWAO e S 102.00 0.20 0.66 102.81 -0.81 173.1 196 -40.3 40.3
MRWA e S 130.70 0.50 0.52 129.16 1.54 298.3 324 -40.3 40.3
MRWA e SMS 136.60 0.20 0.35 135.32 1.28 298.3 324 -25.3 25.3
Velocity Ratios
KLB MUN
KLB 1.64 1.79
0.09 0.03
MUN 1.79 1.77
0.03 0.01
Date 1998-03-16
Origin Time 0536 56.47 +- 0.42
Zone 50
Easting 563.35 +- 4.89 Longitude 117.667
Northing 6516.82 +- 3.19 Latitude -31.482
Depth 0.37 +- 8.69
Arrival times = 9 S.D. = 0.133 Seismographs = 5
Nearest recorder = 15.1 km Gap = 177.2 deg Accuracy = A
Effects Code = Imax = 0 Fault =
2 km E (102 deg) of KBS
WESTERN AUSTRALIA
180 km E ( 74 deg) of PERTH
17 km N (343 deg) of Kellerberrin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.1
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB i P 58.80 0.10 1.46 58.93 -0.13 15.1 144 2.5 2.5
KLB i S 60.80 0.10 1.31 60.63 0.17 15.1 144 2.5 2.5
BAL e P 78.30 0.20 0.75 78.23 0.07 133.4 316 0.3 0.3
BAL e S 93.40 0.20 0.67 93.32 0.08 133.4 316 0.3 0.3
MUN i P 80.50 0.10 1.22 80.47 0.03 148.7 247 -30.8 30.8
MUN SN 99.60 0.10 0.73 99.44 0.16 148.7 247 -40.3 40.3
NWAO i P 82.70 0.10 1.21 82.79 -0.09 165.3 194 -30.8 30.8
NWAO e S 102.00 0.20 0.66 102.13 -0.13 165.3 194 0.2 0.2
MRWA e S 130.70 0.50 0.52 130.84 -0.14 297.8 327 -40.3 40.3
9 times used, S = 0.133
Deferred Data
MUN i S 99.60 0.10 1.10 97.56 2.04 148.7 247 0.2 0.2
NWAO e S2 103.10 0.20 0.37 102.46 0.64 165.3 194 -23.9 23.9
NWAO e SG 103.70 0.20 0.66 102.13 1.57 165.3 194 0.2 0.2
MRWA e SMS 136.60 0.20 0.35 136.64 -0.04 297.8 327 -25.5 25.5
Velocity Ratios
KLB BAL NWAO
KLB 1.86 1.67 1.72
0.13 0.04 0.03
BAL 1.67 1.69 0.00
0.04 0.02 0.00
NWAO 1.72 0.00 1.74
0.03 0.00 0.01
Date 1998-03-16
Origin Time 0536 56.10 +- 1.47
Zone 50
Easting 570.91 +- 10.47 Longitude 117.746
Northing 6521.37 +- 6.21 Latitude -31.440
Depth 0.50 +- 30.20 C
Arrival times = 6 S.D. = 0.081 Seismographs = 4
Nearest recorder = 16.9 km Gap = 210.2 deg Accuracy = A
Effects Code = Imax = 0 Fault =
10 km SE (134 deg) of KBN
WESTERN AUSTRALIA
188 km E ( 73 deg) of PERTH
21 km N ( 7 deg) of Kellerberrin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.1
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB i P 58.80 0.10 1.45 58.85 -0.05 16.9 175 2.7 2.7
KLB i S 60.80 0.10 1.30 60.76 0.04 16.9 175 2.7 2.7
BAL e P 78.30 0.20 0.75 78.21 0.09 135.5 312 0.3 0.3
BAL e S 93.40 0.20 0.67 93.54 -0.14 135.5 312 0.3 0.3
MUN i S 99.60 0.10 1.09 99.60 0.00 157.5 247 0.3 0.3
MRWA e S 130.70 0.50 0.52 130.52 0.18 298.2 325 -40.3 40.3
6 times used, S = 0.081
Deferred Data
MUN i P 80.50 0.10 1.21 81.31 -0.81 157.5 247 -30.8 30.8
MUN SN 99.60 0.10 0.73 100.88 -1.28 157.5 247 -40.3 40.3
NWAO i P 82.70 0.10 1.20 83.31 -0.61 171.7 196 -30.8 30.8
NWAO e S 102.00 0.20 0.66 103.54 -1.54 171.7 196 0.3 0.3
NWAO e S2 103.10 0.20 0.37 103.69 -0.59 171.7 196 -23.9 23.9
NWAO e SG 103.70 0.20 0.66 103.54 0.16 171.7 196 0.3 0.3
MRWA e SMS 136.60 0.20 0.35 136.35 0.25 298.2 325 -25.5 25.5
Velocity Ratios
KLB BAL
KLB 1.74 1.67
0.11 0.04
BAL 1.67 1.68
0.04 0.02
Date 1998-03-17
Origin Time 1613 33.41 +- 0.43
Zone 50
Easting 534.69 +- 4.82 Longitude 117.368
Northing 6429.98 +- 2.15 Latitude -32.266
Depth 2.91 +- 13.61
Arrival times = 9 S.D. = 0.076 Seismographs = 4
Nearest recorder = 74.3 km Gap = 160.9 deg Accuracy = A
Effects Code = Imax = 0 Fault =
28 km S (185 deg) of QUAI
WESTERN AUSTRALIA
148 km E (104 deg) of PERTH
36 km E ( 77 deg) of Brookton
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.2
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i P 45.50 0.10 1.29 45.54 -0.04 74.3 189 2.4 2.4
NWAO i S 54.00 0.10 1.16 53.95 0.05 74.3 189 2.4 2.4
KLB i P 47.00 0.10 1.28 47.03 -0.03 83.4 26 2.2 2.2
KLB i S 56.50 0.10 1.15 56.47 0.03 83.4 26 2.2 2.2
MUN i P 52.00 0.10 1.25 52.01 -0.01 114.0 286 1.6 1.6
MUN e S2 66.20 0.10 0.44 66.15 0.05 114.0 286 -23.9 23.9
RKG e P 71.00 1.00 0.51 70.90 0.10 257.6 187 -42.2 42.2
RKG e PMP 73.00 0.20 0.42 72.86 0.14 257.6 187 -32.2 32.2
RKG e S2 102.00 0.20 0.35 102.41 -0.41 257.6 187 -23.9 23.9
9 times used, S = 0.076
Deferred Data
MUN i S 66.20 0.10 1.12 64.91 1.29 114.0 286 1.6 1.6
BAL i P 63.10 0.20 1.04 63.26 -0.16 194.4 341 -42.2 42.2
BAL e SMS 87.70 0.20 0.36 87.70 0.00 194.4 341 -28.1 28.1
RKG e S 102.00 0.20 0.64 98.84 3.16 257.6 187 -40.3 40.3
MRWA e SG 133.00 0.30 0.57 133.53 -0.53 362.4 338 0.5 0.5
Velocity Ratios
NWAO KLB
NWAO 1.70 0.00
0.02 0.00
KLB 0.00 1.70
0.00 0.02
Date 1998-03-20
Origin Time 1432 43.52 +- 3.89
Zone 50
Easting 564.57 +- 52.27 Longitude 117.680
Northing 6517.51 +- 47.76 Latitude -31.475
Depth 3.17 +- 133.48
Arrival times = 5 S.D. = 0.029 Seismographs = 3
Nearest recorder = 15.0 km Gap = 193.7 deg Accuracy = A
Effects Code = Imax = 0 Fault =
3 km E ( 80 deg) of KBS
WESTERN AUSTRALIA
181 km E ( 74 deg) of PERTH
18 km N (347 deg) of Kellerberrin
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.5
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB i P 46.00 0.10 1.46 46.03 -0.03 15.0 149 13.0 13.0
KLB i S 47.80 0.10 1.31 47.77 0.03 15.0 149 13.0 13.0
BAL i P 65.20 0.10 1.23 65.19 0.01 133.8 315 -30.8 30.8
BAL e S 80.50 0.20 0.67 80.48 0.02 133.8 315 1.5 1.5
MUN e S 85.00 0.30 0.62 85.01 -0.01 150.1 247 1.3 1.3
5 times used, S = 0.029
Deferred Data
MUN e P 67.00 0.50 0.62 67.49 -0.49 150.1 247 -30.8 30.8
Velocity Ratios
KLB BAL
KLB 1.73 1.70
0.11 0.03
BAL 1.70 1.71
0.03 0.02
Date 1998-03-20
Origin Time 2155 18.88 +- 0.64
Zone 50
Easting 505.67 +- 3.37 Longitude 117.060
Northing 6493.18 +- 4.87 Latitude -31.697
Depth 0.86 +- 14.32
Arrival times = 8 S.D. = 0.101 Seismographs = 5
Nearest recorder = 67.4 km Gap = 95.8 deg Accuracy = A
Effects Code = Imax = 0 Fault =
1 km N ( 4 deg) of ME3
WESTERN AUSTRALIA
118 km E ( 77 deg) of PERTH
9 km SE (147 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
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB i P 30.00 0.20 1.13 29.87 0.13 67.4 80 1.0 1.0
KLB i S 37.40 0.10 1.17 37.50 -0.10 67.4 80 1.0 1.0
MUN e P 33.00 0.50 0.65 32.98 0.02 86.4 248 0.7 0.7
MUN i S 42.70 0.30 0.92 42.75 -0.05 86.4 248 0.7 0.7
BAL PN 40.70 0.10 0.87 40.61 0.09 125.4 344 -42.2 42.2
BAL e S 53.50 0.20 0.68 53.52 -0.02 125.4 344 0.5 0.5
NWAO e S 56.80 0.30 0.62 56.81 -0.01 137.3 173 0.5 0.5
MRWA e S 92.00 0.50 0.52 92.15 -0.15 293.1 339 -40.3 40.3
8 times used, S = 0.101
Velocity Ratios
KLB MUN
KLB 1.67 0.00
0.04 0.00
MUN 0.00 1.69
0.00 0.08
Date 1998-03-21
Origin Time 1626 5.66 +- 26.11
Zone 50
Easting 382.89 +- 76.65 Longitude 115.778
Northing 6612.55 +- 50.13 Latitude -30.614
Depth 18.11 +- 176.45
Arrival times = 5 S.D. = 0.100 Seismographs = 3
Nearest recorder = 89.0 km Gap = 202.7 deg Accuracy = B
Effects Code = Imax = 0 Fault =
22 km W (277 deg) of MOO1
WESTERN AUSTRALIA
148 km N (357 deg) of PERTH
147 km N (345 deg) of Mundaring
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 1.5
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
BAL i P 19.90 0.20 1.11 19.82 0.08 89.0 89 -30.8 30.8
BAL e S 30.30 0.20 0.70 30.40 -0.10 89.0 89 -23.9 23.9
MRWA e P 29.10 0.20 0.74 29.22 -0.12 156.1 7 -30.8 30.8
MRWA e S 47.10 0.30 0.61 47.02 0.08 156.1 7 -40.3 40.3
MUN e S 47.10 0.20 0.66 47.13 -0.03 156.7 165 -40.3 40.3
5 times used, S = 0.100
Deferred Data
BAL e S2 31.70 0.20 0.39 30.40 1.30 89.0 89 -23.9 23.9
Velocity Ratios
BAL MRWA
BAL 1.73 1.83
0.04 0.14
MRWA 1.83 1.77
0.14 0.03
Date 1998-03-22
Origin Time 1753 44.50 +- 1.19
Zone 51
Easting 420.58 +- 4.70 Longitude 122.164
Northing 6512.89 +- 7.32 Latitude -31.516
Depth 5.00 +- 9.40 N
Arrival times = 21 S.D. = 0.692 Seismographs = 9
Nearest recorder = 67.4 km Gap = 149.9 deg Accuracy = B
Effects Code = Imax = 0 Fault =
30 km SE (122 deg) of KMBL
WESTERN AUSTRALIA
600 km E ( 87 deg) of PERTH
84 km NE ( 26 deg) of NORSEMAN
Record Dur Sync Unc Resp Seismometer Recorder Pol
WOOL 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 4.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
WOOL i+P 56.00 0.10 1.30 55.53 0.47 67.4 316 4.5 4.5
KLB i+P 101.70 0.10 1.11 101.22 0.48 418.5 267 -42.2 42.2
NWAO e PMP 115.00 0.50 0.33 116.21 -1.21 490.8 250 -31.2 31.2
NWAO e SG 179.60 0.50 0.50 180.08 -0.48 490.8 250 0.6 0.6
BAL e P 114.80 0.20 0.66 114.84 -0.04 531.1 279 -42.2 42.2
BAL e S 168.30 0.30 0.55 167.15 1.15 531.1 279 -40.3 40.3
MUN i P 119.10 0.10 1.07 119.22 -0.12 567.4 263 -42.2 42.2
MUN e PG 137.00 0.20 0.65 137.06 -0.06 567.4 263 0.5 0.5
MUN e S 173.80 0.30 0.54 174.77 -0.97 567.4 263 -40.3 40.3
MUN e S2 192.30 0.50 0.27 191.50 0.80 567.4 263 -23.9 23.9
MUN e SG 200.50 1.00 0.43 201.24 -0.74 567.4 263 0.5 0.5
FORT i+P 118.80 0.10 1.07 119.27 -0.47 567.9 83 -42.2 42.2
FORT e S 176.20 0.20 0.59 174.86 1.34 567.9 83 -40.3 40.3
FORT e SMS 192.20 1.00 0.24 191.93 0.27 567.9 83 -24.2 24.2
RKG e P 122.60 0.50 0.54 121.84 0.76 589.0 233 -42.2 42.2
RKG e S 178.70 0.20 0.59 179.34 -0.64 589.0 233 -40.3 40.3
MEEK e P 127.60 0.10 0.74 128.26 -0.66 641.9 326 -42.2 42.2
MEEK e PG 148.60 0.10 0.74 149.22 -0.62 641.9 326 0.5 0.5
MEEK e SG 220.80 0.30 0.54 221.83 -1.03 641.9 326 0.5 0.5
MRWA e P 128.30 0.20 0.65 128.76 -0.46 646.3 291 -42.2 42.2
MRWA e S 192.40 0.30 0.54 191.39 1.01 646.3 291 -40.3 40.3
21 times used, S = 0.692
Deferred Data
KLB e S 145.30 0.30 0.56 143.44 1.86 418.5 267 -40.3 40.3
NWAO e P 107.00 1.00 0.48 109.96 -2.96 490.8 250 -42.2 42.2
NWAO e S 156.00 1.00 0.43 158.65 -2.65 490.8 250 -40.3 40.3
RKG e SG 205.40 0.50 0.49 207.21 -1.81 589.0 233 0.5 0.5
MEEK e S 192.90 0.30 0.54 190.52 2.38 641.9 326 -40.3 40.3
GIRL e P 203.80 0.30 0.56 203.22 0.58 1262.2 319 -42.2 42.2
GIRL e S 322.50 2.00 0.35 321.03 1.47 1262.2 319 -40.3 40.3
GIRL e SG 395.40 0.50 0.46 393.18 2.22 1262.2 319 0.2 0.2
FITZ e P 233.20 0.50 0.51 235.15 -1.95 1526.4 14 -42.2 42.2
FITZ e S 375.00 0.50 0.46 376.62 -1.62 1526.4 14 -40.3 40.3
Velocity Ratios
BAL MUN FORT RKG MRWA
BAL 1.76 0.00 0.00 0.00 1.79
0.01 0.00 0.00 0.00 0.10
MUN 0.00 1.73 0.00 0.00 2.02
0.00 0.01 0.00 0.00 0.14
FORT 0.00 0.00 1.77 0.00 1.71
0.00 0.00 0.01 0.00 0.11
RKG 0.00 0.00 0.00 1.72 0.00
0.00 0.00 0.00 0.01 0.00
MRWA 1.79 2.02 1.71 0.00 1.76
0.10 0.14 0.11 0.00 0.01
Date 1998-03-22
Origin Time 1753 44.29 +- 16.44
Zone 51
Easting 423.18 +- 16.22 Longitude 122.191
Northing 6510.19 +- 141.53 Latitude -31.541
Depth 5.00 +- 140.52 N
Arrival times = 6 S.D. = 0.301 Seismographs = 6
Nearest recorder = 71.2 km Gap = 180.4 deg Accuracy = B
Effects Code = Imax = 0 Fault =
34 km SE (123 deg) of KMBL
WESTERN AUSTRALIA
602 km E ( 87 deg) of PERTH
83 km NE ( 28 deg) of NORSEMAN
Record Dur Sync Unc Resp Seismometer Recorder Pol
WOOL 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 4.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
WOOL i+P 56.00 0.10 1.30 55.94 0.06 71.2 316 4.3 4.3
KLB i+P 101.70 0.10 1.11 101.32 0.38 421.0 268 -42.2 42.2
BAL e P 114.80 0.20 0.66 115.00 -0.20 534.1 279 -42.2 42.2
FORT i+P 118.80 0.10 1.07 118.80 0.00 565.6 83 -42.2 42.2
MUN i P 119.10 0.10 1.07 119.29 -0.19 569.6 263 -42.2 42.2
MRWA e P 128.30 0.20 0.64 128.97 -0.67 649.7 291 -42.2 42.2
6 times used, S = 0.301
Deferred Data
KLB e S 145.30 0.30 0.56 143.76 1.54 421.0 268 -40.3 40.3
NWAO e P 107.00 1.00 0.48 109.94 -2.94 492.3 250 -42.2 42.2
NWAO e PMP 115.00 0.50 0.33 116.22 -1.22 492.3 250 -31.2 31.2
NWAO e S 156.00 1.00 0.43 158.77 -2.77 492.3 250 -40.3 40.3
NWAO e SG 179.60 0.50 0.50 180.30 -0.70 492.3 250 0.6 0.6
BAL e S 168.30 0.30 0.55 167.58 0.72 534.1 279 -40.3 40.3
FORT e S 176.20 0.20 0.59 174.19 2.01 565.6 83 -40.3 40.3
FORT e SMS 192.20 1.00 0.24 191.16 1.04 565.6 83 -24.2 24.2
MUN e PG 137.00 0.20 0.65 137.22 -0.22 569.6 263 0.5 0.5
MUN e S 173.80 0.30 0.54 175.05 -1.25 569.6 263 -40.3 40.3
MUN e S2 192.30 0.50 0.27 191.86 0.44 569.6 263 -23.9 23.9
MUN e SG 200.50 1.00 0.43 201.66 -1.16 569.6 263 0.5 0.5
RKG e P 122.60 0.50 0.54 121.69 0.91 589.5 233 -42.2 42.2
RKG e S 178.70 0.20 0.59 179.23 -0.53 589.5 233 -40.3 40.3
RKG e SG 205.40 0.50 0.49 207.14 -1.74 589.5 233 0.5 0.5
MEEK e P 127.60 0.10 0.74 128.51 -0.91 645.6 326 -42.2 42.2
MEEK e PG 148.60 0.10 0.74 149.62 -1.02 645.6 326 0.5 0.5
MEEK e S 192.90 0.30 0.54 191.09 1.81 645.6 326 -40.3 40.3
MEEK e SG 220.80 0.30 0.54 222.65 -1.85 645.6 326 0.5 0.5
MRWA e S 192.40 0.30 0.54 191.91 0.49 649.7 291 -40.3 40.3
GIRL e P 203.80 0.30 0.56 203.47 0.33 1266.0 319 -42.2 42.2
GIRL e S 322.50 2.00 0.35 321.62 0.88 1266.0 319 -40.3 40.3
GIRL e SG 395.40 0.50 0.46 394.01 1.39 1266.0 319 0.2 0.2
FITZ e P 233.20 0.50 0.51 235.19 -1.99 1528.4 13 -42.2 42.2
FITZ e S 375.00 0.50 0.46 376.85 -1.85 1528.4 13 -40.3 40.3
NO VELOCITY RATIOS
Date 1998-03-23
Origin Time 1652 13.99 +- 46.58
Zone 49
Easting 593.86 +- 447.54 Longitude 111.933
Northing 7198.21 +- 115.91 Latitude -25.330
Depth 5.00 +- 760.10 N
Arrival times = 5 S.D. = 0.327 Seismographs = 3
Nearest recorder = 378.7 km Gap = 260.5 deg Accuracy = D
Effects Code = Imax = 0 Fault =
255 km W (291 deg) of LP01
WESTERN AUSTRALIA
827 km NW (331 deg) of PERTH
182 km W (254 deg) of CARNARVON
Record Dur Sync Unc Resp Seismometer Recorder Pol
GIRL 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.2
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
GIRL e P 66.00 0.30 0.63 65.89 0.11 378.7 38 -42.2 42.2
MRWA e P 91.70 0.50 0.54 91.44 0.26 589.9 138 -42.2 42.2
MRWA e S 149.00 0.20 0.59 149.01 -0.01 589.9 138 -40.3 40.3
MEEK e P 102.50 0.50 0.53 103.09 -0.59 686.0 103 -42.2 42.2
MEEK e S 169.50 0.30 0.53 169.30 0.20 686.0 103 -40.3 40.3
5 times used, S = 0.327
Deferred Data
GIRL e S 102.40 2.00 0.39 104.53 -2.13 378.7 38 -40.3 40.3
Velocity Ratios
MRWA MEEK
MRWA 1.74 0.00
0.01 0.00
MEEK 0.00 1.76
0.00 0.01
Date 1998-03-25
Origin Time 0243 36.11 +- 12.36
Zone 52
Easting 270.71 +- 687.57 Longitude 126.936
Northing 9597.33 +-1107.26 Latitude -3.641
Depth 5.00 +- 547.14 N
Arrival times = 8 S.D. = 1.239 Seismographs = 6
Nearest recorder = 2691.3 km Gap = 355.2 deg Accuracy = C
Effects Code = Imax = 0 Fault =
136 km W (272 deg) of AAI
Place names undefined for this area
Record Dur Sync Unc Resp Seismometer Recorder Pol
MRWA 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 5.8
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
MEEK e P 354.20 0.20 0.61 354.59 -0.39 2691.3 198 -57.9 57.6
MRWA e P 386.80 0.30 0.56 385.10 1.70 3053.8 200 -59.6 59.9
MRWA e S 663.00 0.50 0.46 664.57 -1.57 3053.8 200 -58.8 58.4
BAL e P 395.00 0.30 0.56 394.37 0.63 3168.5 198 -60.1 60.6
KLB e P 399.00 0.30 0.56 399.83 -0.83 3235.7 196 -60.6 60.6
KLB e S 693.00 1.00 0.40 690.87 2.13 3235.7 196 -59.4 58.8
MUN e P 407.20 0.20 0.61 407.15 0.05 3327.2 198 -60.6 60.6
NWAO e P 411.00 0.50 0.51 412.41 -1.41 3391.7 196 -61.2 60.6
8 times used, S = 1.239
Deferred Data
MEEK e S 592.70 0.50 0.46 610.50 -17.80 2691.3 198 -56.4 56.4
BAL e S 686.00 0.50 0.46 681.13 4.87 3168.5 198 -59.0 58.6
MUN e S 716.00 0.50 0.46 703.95 12.05 3327.2 198 -59.4 58.8
Velocity Ratios
MRWA KLB
MRWA 1.79 0.00
0.00 0.00
KLB 0.00 1.81
0.00 0.00
Date 1998-03-25
Origin Time 0556 13.86 +- 45.61
Zone 50
Easting 421.89 +- 313.85 Longitude 116.245
Northing 7598.34 +- 857.32 Latitude -21.717
Depth 5.00 +-1041.56 N
Arrival times = 5 S.D. = 0.446 Seismographs = 3
Nearest recorder = 231.4 km Gap = 273.6 deg Accuracy = D
Effects Code = Imax = 0 Fault =
40 km SE (115 deg) of LP05
WESTERN AUSTRALIA
128 km S (203 deg) of Dampier
117 km E ( 95 deg) of Onslow
Record Dur Sync Unc Resp Seismometer Recorder Pol
GIRL 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign -10.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
GIRL e P 48.20 0.30 0.66 47.93 0.27 231.4 243 -42.2 42.2
GIRL e S 72.90 0.50 0.53 73.37 -0.47 231.4 243 -40.3 40.3
MEEK e P 92.00 0.10 0.75 92.03 -0.03 595.7 156 -42.2 42.2
MEEK e S 149.80 0.10 0.67 150.13 -0.33 595.7 156 -40.3 40.3
MRWA e S 200.60 1.00 0.41 199.67 0.93 831.1 181 -40.3 40.3
5 times used, S = 0.446
Deferred Data
MEEK e SG 181.00 1.00 0.42 178.41 2.59 595.7 156 0.5 0.5
Velocity Ratios
GIRL MEEK
GIRL 1.72 1.76
0.03 0.03
MEEK 1.76 1.74
0.03 0.00
Date 1998-03-28
Origin Time 0327 29.88 +- 1.86
Zone 50
Easting 682.69 +- 9.86 Longitude 118.935
Northing 6450.65 +- 6.28 Latitude -32.066
Depth 5.00 +- 7.43 N
Arrival times = 12 S.D. = 0.389 Seismographs = 5
Nearest recorder = 123.0 km Gap = 265.3 deg Accuracy = B
Effects Code = Imax = 0 Fault =
43 km N ( 8 deg) of HYDN
WESTERN AUSTRALIA
292 km E ( 93 deg) of PERTH
43 km N ( 8 deg) of Hyden
Record Dur Sync Unc Resp Seismometer Recorder Pol
NWAO 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.3
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB i+P 49.80 0.10 1.24 49.90 -0.10 123.0 295 -30.8 30.8
KLB i S 64.10 0.10 1.11 63.90 0.20 123.0 295 2.5 2.5
NWAO e P 58.40 0.10 0.84 58.52 -0.12 186.2 238 -42.2 42.2
NWAO e S 79.30 0.20 0.65 79.93 -0.63 186.2 238 -40.3 40.3
MUN e PMP 69.70 0.50 0.35 69.18 0.52 257.7 271 -32.2 32.2
MUN e PG 72.00 0.30 0.65 71.94 0.06 257.7 271 1.2 1.2
MUN e S 95.20 0.30 0.59 94.97 0.23 257.7 271 -40.3 40.3
MUN e SMS 99.00 0.50 0.29 99.52 -0.52 257.7 271 -26.0 26.0
BAL e P 68.00 0.20 0.70 68.25 -0.25 266.7 306 -42.2 42.2
BAL e S 96.60 0.30 0.58 96.86 -0.26 266.7 306 -40.3 40.3
BAL e SMS 101.80 0.30 0.32 101.74 0.06 266.7 306 -25.8 25.8
RKG e P 77.00 0.50 0.57 75.96 1.04 330.5 212 -42.2 42.2
12 times used, S = 0.389
Deferred Data
RKG e S 112.30 0.50 0.52 110.29 2.01 330.5 212 -40.3 40.3
MRWA e PG 97.00 2.00 0.42 98.89 -1.89 423.0 317 0.7 0.7
MRWA e S 131.00 0.50 0.50 129.77 1.23 423.0 317 -40.3 40.3
MRWA e SG 145.80 0.30 0.56 146.74 -0.94 423.0 317 0.7 0.7
Velocity Ratios
KLB NWAO BAL
KLB 1.72 1.77 1.79
0.01 0.08 0.05
NWAO 1.77 1.73 1.80
0.08 0.01 0.11
BAL 1.79 1.80 1.75
0.05 0.11 0.02
Date 1998-03-29
Origin Time 0350 16.88 +- 4.85
Zone 54
Easting 364.28 +- 12.25 Longitude 139.750
Northing 8590.44 +- 37.36 Latitude -12.748
Depth 5.00 +- 23.07 N
Arrival times = 13 S.D. = 0.888 Seismographs = 8
Nearest recorder = 1240.0 km Gap = 316.1 deg Accuracy = D
Effects Code = Imax = 0 Fault =
789 km NW (304 deg) of CN2
QUEENSLAND
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 5.3
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KNA e P 173.70 0.30 0.56 172.92 0.78 1240.0 252 -42.2 42.2
KNA e S 289.00 0.20 0.55 288.74 0.26 1240.0 252 -40.3 40.3
KNA e SG 360.00 0.50 0.46 359.42 0.58 1240.0 252 0.2 0.2
FITZ e P 220.50 0.50 0.51 221.80 -1.30 1644.4 246 -42.2 42.2
FITZ e S 373.00 0.50 0.46 373.85 -0.85 1644.4 246 -40.3 40.3
FITZ e SG 473.20 0.50 0.46 471.13 2.07 1644.4 246 0.2 0.2
FORT e P 304.10 0.20 0.61 303.93 0.17 2333.6 209 -53.3 52.8
FORT e S 528.20 0.30 0.51 529.52 -1.32 2333.6 209 -46.9 48.9
MEEK e P 334.80 0.10 0.70 335.03 -0.23 2687.6 231 -57.9 57.6
WOOL e P 340.80 0.10 0.70 340.15 0.65 2746.4 219 -57.9 57.6
MRWA e P 365.50 0.50 0.51 366.05 -0.55 3055.9 229 -59.6 59.9
KLB e P 368.00 1.00 0.44 366.92 1.08 3066.6 223 -59.6 59.9
BAL e P 368.20 0.30 0.56 368.25 -0.05 3082.8 226 -59.6 59.9
13 times used, S = 0.888
Deferred Data
MEEK e S 596.70 0.30 0.51 590.69 6.01 2687.6 231 -56.4 56.4
MRWA e S 669.00 2.00 0.35 645.66 23.34 3055.9 229 -58.8 58.4
BAL e S 685.00 2.00 0.35 649.54 35.46 3082.8 226 -58.8 58.4
NWAO e P 374.00 1.00 0.44 377.46 -3.46 3197.5 221 -60.1 60.6
NWAO e S 700.00 2.00 0.35 666.07 33.93 3197.5 221 -59.0 58.6
MUN e P 382.00 1.00 0.44 378.43 3.57 3209.7 224 -60.1 60.6
Velocity Ratios
KNA FITZ FORT
KNA 1.74 1.79 1.83
0.00 0.05 0.01
FITZ 1.79 1.75 1.86
0.05 0.01 0.03
FORT 1.83 1.86 1.78
0.01 0.03 0.00
Date 1998-03-29
Origin Time 2006 47.29 +- 7.83
Zone 52
Easting 540.18 +- 42.96 Longitude 129.372
Northing 8427.03 +- 262.44 Latitude -14.228
Depth 34.47 +- 320.88
Arrival times = 6 S.D. = 0.516 Seismographs = 3
Nearest recorder = 180.5 km Gap = 278.6 deg Accuracy = C
Effects Code = Imax = 0 Fault =
180 km N ( 21 deg) of KNA
NORTHERN TERRITORY
252 km SW (219 deg) of DARWIN
Record Dur Sync Unc Resp Seismometer Recorder Pol
ASPA 0.00 Seismograph details unknown
KNA 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 4.2
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KNA i-P 73.00 0.10 1.20 72.60 0.40 180.5 200 -30.3 42.2
KNA i S 92.00 0.10 1.08 91.44 0.56 180.5 200 -33.5 40.3
FITZ e P 121.30 0.10 0.75 121.59 -0.29 585.8 222 -30.3 42.2
FITZ e S 177.10 0.30 0.54 176.75 0.35 585.8 222 -33.5 40.3
WB2 e P 151.10 1.00 0.46 150.67 0.43 826.0 140 -30.3 42.2
WB2 e S 227.10 1.00 0.41 227.37 -0.27 826.0 140 -33.5 40.3
6 times used, S = 0.516
Deferred Data
ASPA e P 190.80 2.00 0.38 189.96 0.84 1150.7 156 -30.3 42.2
ASPA e S 297.90 2.00 0.35 295.78 2.12 1150.7 156 -33.5 40.3
MEEK e P 264.40 0.30 0.56 265.94 -1.54 1779.1 217 -30.3 42.2
MEEK e S 431.70 1.00 0.40 428.06 3.64 1779.1 217 -33.5 40.3
FORT e P 271.00 2.00 0.38 273.19 -2.19 1839.4 183 -30.3 42.2
GIRL e P 273.80 1.00 0.44 276.31 -2.51 1865.2 237 -30.3 42.2
GIRL e S 444.00 0.50 0.46 446.12 -2.12 1865.2 237 -33.5 40.3
WOOL e S 478.00 0.50 0.46 480.46 -2.46 2027.5 201 -33.5 40.4
MRWA e P 308.20 0.30 0.56 313.14 -4.94 2166.2 217 -32.9 45.3
MRWA e S 505.50 0.50 0.46 513.99 -8.49 2166.2 217 -33.1 41.4
Velocity Ratios
KNA FITZ WB2
KNA 1.74 1.76 1.73
0.01 0.02 0.04
FITZ 1.76 1.75 1.68
0.02 0.01 0.11
WB2 1.73 1.68 1.73
0.04 0.11 0.03