Data Report
Bulletin / 1998-02
Contributed by CUPWA
Date 1998-02-01
Origin Time 2251 22.70 +- 0.40
Zone 50
Easting 504.45 +- 2.41 Longitude 117.047
Northing 6499.08 +- 2.97 Latitude -31.643
Depth 5.94 +- 10.13
Arrival times = 8 S.D. = 0.150 Seismographs = 4
Nearest recorder = 67.9 km Gap = 101.1 deg Accuracy = A
Effects Code = Imax = 0 Fault =
7 km N (352 deg) of ME3
WESTERN AUSTRALIA
118 km E ( 74 deg) of PERTH
4 km E (113 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 33.80 0.10 1.30 33.82 -0.02 67.9 85 5.3 5.3
KLB e S 41.70 0.10 0.82 41.53 0.17 67.9 85 5.3 5.3
MUN e P 37.10 0.10 0.89 37.03 0.07 87.6 244 4.0 4.0
MUN e S 47.10 0.10 0.80 46.96 0.14 87.6 244 4.0 4.0
BAL e P 42.20 0.10 0.87 42.12 0.08 119.4 344 -30.8 30.8
BAL e S 55.50 0.10 0.78 55.72 -0.22 119.4 344 3.0 3.0
NWAO e P 45.40 0.20 0.74 45.47 -0.07 143.3 173 -30.8 30.8
NWAO e S 62.00 0.30 0.62 62.33 -0.33 143.3 173 2.5 2.5
8 times used, S = 0.150
Deferred Data
MRWA e P 61.70 0.30 0.64 63.43 -1.73 287.1 339 -42.2 42.2
MRWA e S 95.50 0.20 0.63 93.80 1.70 287.1 339 -40.3 40.3
MRWA e SG 101.40 0.30 0.58 102.02 -0.62 287.1 339 1.2 1.2
Velocity Ratios
KLB MUN BAL NWAO
KLB 1.71 1.64 1.64 1.75
0.02 0.17 0.06 0.08
MUN 1.64 1.69 1.65 1.80
0.17 0.02 0.11 0.12
BAL 1.64 1.65 1.68 0.00
0.06 0.11 0.01 0.00
NWAO 1.75 1.80 0.00 1.73
0.08 0.12 0.00 0.03
Date 1998-02-05
Origin Time 2159 7.08 +- 14.10
Zone 49
Easting 463.29 +- 456.93 Longitude 110.577
Northing 5701.89 +- 544.04 Latitude -38.831
Depth 5.00 +- 902.76 N
Arrival times = 10 S.D. = 0.399 Seismographs = 6
Nearest recorder = 744.6 km Gap = 334.2 deg Accuracy = C
Effects Code = Imax = 0 Fault =
717 km SW (215 deg) of ABUS
901 km SW (211 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 3.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
RKG e P 103.70 0.30 0.59 103.24 0.46 744.6 52 -42.2 42.2
RKG e S 174.20 0.20 0.57 174.68 -0.48 744.6 52 -40.3 40.3
NWAO e P 120.50 2.00 0.39 120.74 -0.24 889.4 44 -42.2 42.2
NWAO e S 205.50 1.00 0.41 205.15 0.35 889.4 44 -40.3 40.3
MUN e S 211.00 1.00 0.41 210.83 0.17 916.4 35 -40.3 40.3
KLB e P 138.50 0.50 0.51 138.50 -0.00 1036.2 41 -42.2 42.2
BAL e P 142.90 0.20 0.61 142.76 0.14 1071.4 33 -42.2 42.2
BAL e S 244.00 1.00 0.40 243.49 0.51 1071.4 33 -40.3 40.3
MRWA e P 155.00 0.50 0.51 155.63 -0.63 1177.9 26 -42.2 42.2
MRWA e S 265.80 0.50 0.46 265.90 -0.10 1177.9 26 -40.3 40.3
10 times used, S = 0.399
Deferred Data
MUN e P 126.00 0.30 0.57 124.00 2.00 916.4 35 -42.2 42.2
KLB e S 235.00 2.00 0.35 236.08 -1.08 1036.2 41 -40.3 40.3
Velocity Ratios
RKG NWAO BAL MRWA
RKG 1.73 0.00 1.78 1.79
0.01 0.00 0.05 0.04
NWAO 0.00 1.75 0.00 1.75
0.00 0.04 0.00 0.18
BAL 1.78 0.00 1.74 0.00
0.05 0.00 0.01 0.00
MRWA 1.79 1.75 0.00 1.75
0.04 0.18 0.00 0.01
Date 1998-02-06
Origin Time 0610 50.16 +- 0.55
Zone 50
Easting 625.42 +- 3.23 Longitude 118.317
Northing 6544.00 +- 3.26 Latitude -31.231
Depth 5.00 +- 6.74 N
Arrival times = 19 S.D. = 0.510 Seismographs = 7
Nearest recorder = 66.3 km Gap = 120.4 deg Accuracy = C
Effects Code = Imax = 0 Fault =
36 km S (163 deg) of MUKI
WESTERN AUSTRALIA
247 km E ( 72 deg) of PERTH
28 km N ( 9 deg) of Merredin
Record Dur Sync Unc Resp Seismometer Recorder Pol
KLB 0.00 Seismograph details unknown
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 60.70 0.10 1.30 61.01 -0.31 66.3 232 4.6 4.6
KLB e S 68.70 0.20 0.72 68.53 0.17 66.3 232 4.6 4.6
BAL e P 76.00 0.30 0.68 76.57 -0.57 168.7 293 -30.8 30.8
BAL e PMP 77.20 0.20 0.44 77.29 -0.09 168.7 293 -34.5 34.5
BAL e S 96.30 0.20 0.66 96.49 -0.19 168.7 293 -23.9 23.9
NWAO e P 82.00 0.20 0.72 82.14 -0.14 213.9 208 -42.2 42.2
NWAO e S 105.70 0.50 0.54 106.03 -0.33 213.9 208 -40.3 40.3
NWAO e SMS 108.50 0.20 0.36 108.96 -0.46 213.9 208 -27.1 27.1
MUN i+P 83.30 0.10 1.18 82.45 0.85 216.5 246 -42.2 42.2
MUN e S 106.50 0.50 0.54 106.56 -0.06 216.5 246 -40.3 40.3
MUN e SMS 109.20 0.20 0.36 109.59 -0.39 216.5 246 -27.0 27.0
MRWA e P 94.10 0.20 0.69 94.45 -0.35 315.7 314 -42.2 42.2
MRWA e S 127.70 0.30 0.57 127.45 0.25 315.7 314 -40.3 40.3
MRWA e SMS 134.00 0.20 0.35 134.24 -0.24 315.7 314 -25.2 25.2
WOOL e S 128.30 0.50 0.52 128.61 -0.31 321.2 87 -40.3 40.3
WOOL e SMS 136.20 1.00 0.25 135.62 0.58 321.2 87 -25.1 25.1
WOOL e SG 138.80 0.50 0.52 138.89 -0.09 321.2 87 0.9 0.9
MEEK e P 118.60 1.00 0.48 117.95 0.65 509.9 3 -42.2 42.2
MEEK e SG 190.90 0.50 0.50 191.01 -0.11 509.9 3 0.6 0.6
19 times used, S = 0.510
Deferred Data
MEEK e S 167.10 1.00 0.43 168.37 -1.27 509.9 3 -40.3 40.3
Velocity Ratios
KLB BAL NWAO MUN MRWA
KLB 1.76 1.80 1.74 1.67 1.77
0.04 0.08 0.06 0.05 0.03
BAL 1.80 1.79 0.00 1.40 1.73
0.08 0.03 0.00 0.18 0.08
NWAO 1.74 0.00 1.74 0.00 1.82
0.06 0.00 0.03 0.00 0.13
MUN 1.67 1.40 0.00 1.70 1.96
0.05 0.18 0.00 0.02 0.13
MRWA 1.77 1.73 1.82 1.96 1.76
0.03 0.08 0.13 0.13 0.01
Date 1998-02-06
Origin Time 1016 36.21 +- 1.42
Zone 50
Easting 627.28 +- 9.71 Longitude 118.336
Northing 6544.27 +- 3.40 Latitude -31.229
Depth 5.00 +- 6.00 N
Arrival times = 13 S.D. = 0.350 Seismographs = 5
Nearest recorder = 68.0 km Gap = 254.3 deg Accuracy = C
Effects Code = Imax = 0 Fault =
36 km S (160 deg) of MUKI
WESTERN AUSTRALIA
249 km E ( 72 deg) of PERTH
29 km N ( 13 deg) of Merredin
Record Dur Sync Unc Resp Seismometer Recorder Pol
KLB 0.00 Seismograph details unknown
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 e P 47.20 0.10 0.91 47.34 -0.14 68.0 233 4.5 4.5
KLB e S 55.20 0.20 0.71 55.05 0.15 68.0 233 4.5 4.5
BAL e P 62.70 0.20 0.73 62.85 -0.15 170.3 293 -30.8 30.8
BAL e PMP 63.50 0.20 0.44 63.56 -0.06 170.3 293 -34.4 34.4
BAL e S 82.60 0.20 0.66 82.90 -0.30 170.3 293 -40.3 40.3
BAL e SMS 83.80 0.20 0.37 84.39 -0.59 170.3 293 -29.3 29.3
NWAO e S 92.10 0.30 0.60 92.33 -0.23 215.1 208 -40.3 40.3
NWAO e SMS 94.90 0.50 0.30 95.30 -0.40 215.1 208 -27.1 27.1
MUN e P 69.50 0.50 0.60 68.73 0.77 218.3 246 -42.2 42.2
MUN e S 93.20 0.20 0.65 93.00 0.20 218.3 246 -40.3 40.3
MUN e SMS 96.00 0.20 0.36 96.09 -0.09 218.3 246 -27.0 27.0
MRWA e P 80.50 0.20 0.69 80.64 -0.14 316.8 314 -42.2 42.2
MRWA e S 114.30 0.30 0.57 113.75 0.55 316.8 314 -40.3 40.3
13 times used, S = 0.350
Velocity Ratios
KLB BAL MUN MRWA
KLB 1.73 1.77 1.70 1.77
0.03 0.06 0.07 0.03
BAL 1.77 1.75 0.00 1.78
0.06 0.02 0.00 0.07
MUN 1.70 0.00 1.71 1.92
0.07 0.00 0.03 0.18
MRWA 1.77 1.78 1.92 1.76
0.03 0.07 0.18 0.01
Date 1998-02-08
Origin Time 0446 4.67 +- 5.14
Zone 51
Easting 421.45 +- 16.69 Longitude 122.259
Northing 8028.33 +- 18.39 Latitude -17.831
Depth 5.00 +- 53.46 N
Arrival times = 10 S.D. = 0.767 Seismographs = 5
Nearest recorder = 359.3 km Gap = 187.8 deg Accuracy = C
Effects Code = Imax = 0 Fault =
359 km W (274 deg) of FITZ
WESTERN AUSTRALIA
16 km N ( 11 deg) of BROOME
Record Dur Sync Unc Resp Seismometer Recorder Pol
FITZ 0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 3.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
FITZ w P 54.30 2.00 0.44 54.19 0.11 359.3 95 -42.2 42.2
FITZ e PMP 58.80 0.10 0.47 58.02 0.78 359.3 95 -31.5 31.5
FITZ e S 92.30 0.50 0.51 91.08 1.22 359.3 95 -40.3 40.3
GIRL e P 132.10 1.00 0.45 131.24 0.86 996.3 236 -42.2 42.2
WARB e P 135.20 0.10 0.71 135.30 -0.10 1029.5 154 -42.2 42.2
WARB e S 232.00 0.20 0.55 232.28 -0.28 1029.5 154 -40.3 40.3
MEEK e P 137.10 0.50 0.51 137.23 -0.13 1045.5 200 -42.2 42.2
MEEK e S 235.20 0.20 0.55 235.65 -0.45 1045.5 200 -40.3 40.3
KAKA e P 160.40 0.50 0.51 160.17 0.23 1235.6 63 -42.2 42.2
KAKA e S 274.00 0.30 0.51 275.60 -1.60 1235.6 63 -40.3 40.3
10 times used, S = 0.767
Deferred Data
MRWA e P 181.00 1.00 0.44 181.98 -0.98 1415.8 205 -42.2 42.2
MRWA e S 309.50 1.00 0.40 313.56 -4.06 1415.8 205 -40.3 40.3
Velocity Ratios
FITZ WARB MEEK KAKA
FITZ 1.77 1.73 1.73 1.71
0.08 0.05 0.06 0.05
WARB 1.73 1.74 0.00 1.67
0.05 0.00 0.00 0.06
MEEK 1.73 0.00 1.74 1.67
0.06 0.00 0.01 0.10
KAKA 1.71 1.67 1.67 1.73
0.05 0.06 0.10 0.01
Date 1998-02-08
Origin Time 0727 36.72 +- 24.01
Zone 50
Easting 525.05 +- 55.80 Longitude 117.243
Northing 7526.64 +- 84.86 Latitude -22.366
Depth 5.00 +- 252.38 N
Arrival times = 6 S.D. = 0.980 Seismographs = 4
Nearest recorder = 311.1 km Gap = 212.2 deg Accuracy = D
Effects Code = Imax = 0 Fault =
114 km N ( 11 deg) of LP06
WESTERN AUSTRALIA
198 km S (164 deg) of Dampier
185 km S (168 deg) of Karratha
Record Dur Sync Unc Resp Seismometer Recorder Pol
MEEK 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 80.00 1.00 0.50 80.44 -0.44 311.1 263 -42.2 42.2
MEEK e P 102.80 0.30 0.61 102.48 0.32 493.0 164 -42.2 42.2
MEEK e S 152.00 0.50 0.50 151.40 0.60 493.0 164 -40.3 40.3
MRWA e P 137.00 0.50 0.53 135.84 1.16 769.0 189 -42.2 42.2
MRWA e S 208.00 0.50 0.47 209.46 -1.46 769.0 189 -40.3 40.3
WARB e S 267.00 1.00 0.40 268.04 -1.04 1047.2 115 -40.3 40.3
6 times used, S = 0.980
Velocity Ratios
MEEK MRWA
MEEK 1.74 1.64
0.02 0.07
MRWA 1.64 1.71
0.07 0.01
Date 1998-02-09
Origin Time 2011 13.14 +- 0.56
Zone 50
Easting 505.30 +- 2.87 Longitude 117.056
Northing 6492.53 +- 3.13 Latitude -31.702
Depth 5.00 +- 10.37 N
Arrival times = 9 S.D. = 0.293 Seismographs = 5
Nearest recorder = 67.9 km Gap = 95.1 deg Accuracy = B
Effects Code = Imax = 0 Fault =
1 km N (350 deg) of ME3
WESTERN AUSTRALIA
117 km E ( 77 deg) of PERTH
9 km SE (152 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
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB e P 24.10 0.10 0.91 24.25 -0.15 67.9 79 4.5 4.5
KLB e S 32.10 0.10 0.82 31.95 0.15 67.9 79 4.5 4.5
MUN i-P 27.10 0.10 1.28 27.17 -0.07 85.8 248 3.5 3.5
MUN e S 37.00 0.10 0.80 36.90 0.10 85.8 248 3.5 3.5
BAL e P 33.50 0.10 0.86 33.56 -0.06 125.9 344 -30.8 30.8
BAL e S 47.60 0.10 0.78 47.96 -0.36 125.9 344 2.4 2.4
NWAO e P 34.90 0.10 0.86 35.07 -0.17 136.7 173 -30.8 30.8
NWAO e S 51.10 0.10 0.77 50.94 0.16 136.7 173 2.2 2.2
MRWA e S 86.70 0.20 0.63 85.77 0.93 293.5 339 -40.3 40.3
9 times used, S = 0.293
Velocity Ratios
KLB MUN BAL NWAO
KLB 1.73 1.63 1.65 1.76
0.03 0.19 0.06 0.05
MUN 1.63 1.71 1.66 1.81
0.19 0.02 0.09 0.07
BAL 1.65 1.66 1.69 0.00
0.06 0.09 0.01 0.00
NWAO 1.76 1.81 0.00 1.74
0.05 0.07 0.00 0.01
Date 1998-02-10
Origin Time 0054 0.81 +- 0.87
Zone 50
Easting 514.27 +- 6.66 Longitude 117.149
Northing 6589.88 +- 5.61 Latitude -30.824
Depth 5.00 +- 8.40 N
Arrival times = 8 S.D. = 0.373 Seismographs = 5
Nearest recorder = 48.7 km Gap = 178.1 deg Accuracy = B
Effects Code = Imax = 0 Fault =
2 km SE (133 deg) of CAS
WESTERN AUSTRALIA
176 km NE ( 45 deg) of PERTH
6 km NE ( 59 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 1.6
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
BAL e P 8.30 0.10 0.94 8.80 -0.50 48.7 299 6.2 6.2
BAL e S 14.20 0.10 0.84 14.35 -0.15 48.7 299 6.2 6.2
KLB e P 17.60 0.10 0.88 17.64 -0.04 103.1 145 2.9 2.9
KLB e S 29.20 0.10 0.79 29.32 -0.12 103.1 145 2.9 2.9
MUN e S 44.40 0.20 0.66 43.95 0.45 156.1 214 -23.9 23.9
MRWA e P 32.50 0.10 0.83 32.30 0.20 209.9 327 -42.2 42.2
MRWA e S 56.40 0.10 0.74 55.82 0.58 209.9 327 -40.3 40.3
NWAO e SMS 64.40 0.30 0.33 64.36 0.04 233.2 178 -26.5 26.5
8 times used, S = 0.373
Velocity Ratios
BAL KLB MRWA
BAL 1.79 1.61 1.74
0.04 0.06 0.02
KLB 1.61 1.69 1.83
0.06 0.02 0.04
MRWA 1.74 1.83 1.75
0.02 0.04 0.01
Date 1998-02-11
Origin Time 0859 47.21 +- 126.12
Zone 50
Easting 322.67 +- 310.88 Longitude 115.263
Northing 7393.65 +- 238.42 Latitude -23.558
Depth 5.00 +-1224.39 N
Arrival times = 5 S.D. = 0.572 Seismographs = 4
Nearest recorder = 146.2 km Gap = 152.8 deg Accuracy = B
Effects Code = Imax = 0 Fault =
85 km SE (121 deg) of LP03
WESTERN AUSTRALIA
932 km N (356 deg) of PERTH
355 km SW (205 deg) of Dampier
215 km SE (148 deg) of Exmouth
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 3.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
GIRL e P 70.50 0.10 0.85 70.46 0.04 146.2 313 -30.8 30.8
MEEK e P 112.10 0.10 0.76 111.41 0.69 480.1 136 -42.2 42.2
MRWA e P 129.30 0.10 0.74 129.66 -0.36 631.3 173 -42.2 42.2
WARB e P 196.20 0.50 0.51 197.14 -0.94 1189.2 106 -42.2 42.2
WARB e S 308.40 0.50 0.46 308.43 -0.03 1189.2 106 -40.3 40.3
5 times used, S = 0.572
Deferred Data
MEEK e S 161.40 0.30 0.55 159.17 2.23 480.1 136 -40.3 40.3
MRWA e S 189.00 0.10 0.67 190.94 -1.94 631.3 173 -40.3 40.3
Velocity Ratios
WARB
WARB 1.75
0.01
Date 1998-02-11
Origin Time 1417 19.66 +- 3.10
Zone 53
Easting 403.26 +- 26.06 Longitude 134.076
Northing 7810.02 +- 15.98 Latitude -19.803
Depth 5.00 +- 34.98 N
Arrival times = 11 S.D. = 1.216 Seismographs = 6
Nearest recorder = 32.8 km Gap = 131.3 deg Accuracy = C
Effects Code = Imax = 0 Fault =
10 km NW (308 deg) of TC9Y
NORTHERN TERRITORY
885 km SE (157 deg) of DARWIN
20 km SW (213 deg) of TENNANT CREEK
Record Dur Sync Unc Resp Seismometer Recorder Pol
ASPA 0.00 Seismograph details unknown
FITZ -0.00 Seismograph details unknown
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
WB2 i+P 25.00 0.10 1.38 25.09 -0.09 32.8 118 9.3 9.3
ASPA e P 78.20 0.20 0.67 77.80 0.40 429.9 182 -42.2 42.2
ASPA e S 121.70 0.30 0.56 121.06 0.64 429.9 182 -40.3 40.3
KAKA e P 123.00 0.30 0.58 122.98 0.02 804.0 347 -42.2 42.2
KAKA e S 201.90 0.50 0.47 199.73 2.17 804.0 347 -40.3 40.3
FITZ e S 220.40 1.00 0.41 222.44 -2.04 912.0 280 -40.3 40.3
WARB e P 150.20 0.20 0.61 151.77 -1.57 1041.8 225 -42.2 42.2
WARB e S 251.40 0.30 0.51 249.85 1.55 1041.8 225 -40.3 40.3
FORT e P 188.10 0.50 0.51 190.48 -2.38 1362.1 205 -42.2 42.2
FORT e S 318.20 1.00 0.40 317.24 0.96 1362.1 205 -40.3 40.3
FORT e SG 396.50 1.00 0.40 395.95 0.55 1362.1 205 0.2 0.2
11 times used, S = 1.216
Deferred Data
MEEK e P 232.70 0.50 0.51 240.11 -7.41 1772.3 241 -42.2 42.2
Velocity Ratios
ASPA KAKA WARB FORT
ASPA 1.74 1.79 1.80 1.79
0.01 0.04 0.02 0.02
KAKA 1.79 1.76 1.82 1.79
0.04 0.01 0.06 0.05
WARB 1.80 1.82 1.78 1.76
0.02 0.06 0.01 0.07
FORT 1.79 1.79 1.76 1.77
0.02 0.05 0.07 0.01
Date 1998-02-11
Origin Time 1651 18.37 +- 4.19
Zone 50
Easting 578.56 +- 24.46 Longitude 117.839
Northing 6371.94 +- 19.55 Latitude -32.788
Depth 5.00 +- 16.32 N
Arrival times = 7 S.D. = 0.164 Seismographs = 4
Nearest recorder = 58.7 km Gap = 257.8 deg Accuracy = B
Effects Code = Imax = 0 Fault =
32 km SW (245 deg) of AKUL
WESTERN AUSTRALIA
245 km N (359 deg) of ALBANY
209 km SE (117 deg) of PERTH
185 km SE (123 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 1.8
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 27.80 0.20 0.80 27.99 -0.19 58.7 254 5.1 5.1
NWAO e S 34.80 0.10 0.83 34.66 0.14 58.7 254 5.1 5.1
KLB e P 40.00 1.00 0.54 39.75 0.25 132.8 356 -30.8 30.8
KLB e S 55.00 0.30 0.62 55.08 -0.08 132.8 356 2.3 2.3
MUN e P 46.00 0.10 0.84 45.97 0.03 177.7 300 -42.2 42.2
MUN e S 66.50 0.10 0.76 66.61 -0.11 177.7 300 -40.3 40.3
BAL e SMS 90.00 1.00 0.26 89.68 0.32 264.5 335 -25.9 25.9
7 times used, S = 0.164
Deferred Data
BAL w S 90.00 1.00 0.47 84.88 5.12 264.5 335 -40.3 40.3
Velocity Ratios
NWAO KLB MUN
NWAO 1.74 0.00 1.74
0.05 0.00 0.04
KLB 0.00 1.69 0.00
0.00 0.10 0.00
MUN 1.74 0.00 1.74
0.04 0.00 0.01
Date 1998-02-13
Origin Time 0510 48.95 +- 7.14
Zone 51
Easting 615.46 +- 32.59 Longitude 124.087
Northing 8066.60 +- 30.81 Latitude -17.484
Depth 5.00 +- 84.02 N
Arrival times = 7 S.D. = 0.588 Seismographs = 5
Nearest recorder = 178.2 km Gap = 221.5 deg Accuracy = B
Effects Code = Imax = 0 Fault =
178 km W (292 deg) of FITZ
WESTERN AUSTRALIA
52 km E (111 deg) of Derby
Record Dur Sync Unc Resp Seismometer Recorder Pol
FITZ -0.00 Seismograph details unknown
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 3.3
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
FITZ e P 75.80 0.10 0.84 76.58 -0.78 178.2 112 -42.2 42.2
FITZ e S 97.70 0.10 0.75 97.25 0.45 178.2 112 -40.3 40.3
KNA e S 172.20 0.20 0.59 172.53 -0.33 535.7 69 -40.3 40.3
WARB e P 176.20 0.10 0.71 175.91 0.29 999.2 165 -42.2 42.2
WARB e S 270.20 0.30 0.51 270.17 0.03 999.2 165 -40.3 40.3
MEEK e P 195.80 0.10 0.70 195.40 0.40 1160.3 208 -42.2 42.2
FORT e P 239.20 0.50 0.51 240.06 -0.86 1530.0 165 -42.2 42.2
7 times used, S = 0.588
Deferred Data
KNA e P 124.50 0.20 0.66 119.82 4.68 535.7 69 -42.2 42.2
MEEK e S 301.60 0.20 0.55 304.10 -2.50 1160.3 208 -40.3 40.3
FORT e S 383.60 0.50 0.46 381.87 1.73 1530.0 165 -40.3 40.3
Velocity Ratios
FITZ WARB
FITZ 1.82 1.72
0.01 0.01
WARB 1.72 1.74
0.01 0.00
Date 1998-02-18
Origin Time 1838 36.79 +- 0.44
Zone 50
Easting 503.89 +- 2.41 Longitude 117.041
Northing 6493.07 +- 3.12 Latitude -31.698
Depth 5.00 +- 10.90 N
Arrival times = 8 S.D. = 0.142 Seismographs = 4
Nearest recorder = 69.2 km Gap = 97.1 deg Accuracy = B
Effects Code = Imax = 0 Fault =
2 km NW (318 deg) of ME3
WESTERN AUSTRALIA
116 km E ( 76 deg) of PERTH
8 km S (159 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
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KLB e P 48.20 0.10 0.91 48.11 0.09 69.2 80 4.4 4.4
KLB e S 56.00 0.10 0.82 55.95 0.05 69.2 80 4.4 4.4
MUN e P 50.60 0.10 0.89 50.63 -0.03 84.7 248 3.5 3.5
MUN e S 60.40 0.10 0.81 60.24 0.16 84.7 248 3.5 3.5
BAL e P 57.20 0.20 0.75 57.08 0.12 125.0 345 -30.8 30.8
BAL e S 71.10 0.20 0.68 71.36 -0.26 125.0 345 2.4 2.4
NWAO e P 58.70 0.20 0.75 58.82 -0.12 137.4 172 -30.8 30.8
NWAO e S 74.60 0.30 0.62 74.78 -0.18 137.4 172 2.2 2.2
8 times used, S = 0.142
Velocity Ratios
KLB MUN BAL NWAO
KLB 1.68 0.00 1.68 1.77
0.02 0.00 0.09 0.09
MUN 0.00 1.71 1.62 1.75
0.00 0.02 0.12 0.12
BAL 1.68 1.62 1.68 0.00
0.09 0.12 0.03 0.00
NWAO 1.77 1.75 0.00 1.73
0.09 0.12 0.00 0.03
Date 1998-02-19
Origin Time 0416 39.72 +- 8.94
Zone 53
Easting 513.72 +- 86.28 Longitude 135.124
Northing 9529.44 +- 105.36 Latitude -4.257
Depth 5.00 +- 159.83 N
Arrival times = 9 S.D. = 1.292 Seismographs = 5
Nearest recorder = 980.5 km Gap = 330.3 deg Accuracy = D
Effects Code = Imax = 0 Fault =
304 km NE ( 60 deg) of TLE
Place names undefined for this area
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 -10.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
KAKA e P 165.20 0.10 0.71 164.38 0.82 980.5 197 -42.2 42.2
KAKA e S 257.10 0.10 0.64 256.94 0.16 980.5 197 -40.3 40.3
KNA e P 222.40 0.20 0.61 221.30 1.10 1451.2 208 -42.2 42.2
KNA e S 358.50 0.30 0.51 356.04 2.46 1451.2 208 -40.3 40.3
FITZ e P 270.10 0.20 0.61 270.00 0.10 1854.1 213 -42.2 42.2
FITZ e S 438.30 0.30 0.51 440.83 -2.53 1854.1 213 -40.3 40.3
ASPA e P 305.50 0.20 0.61 306.67 -1.17 2152.2 183 -44.2 44.8
ASPA e S 507.60 0.50 0.46 507.59 0.01 2152.2 183 -41.2 41.1
WARB e P 348.60 0.20 0.61 348.97 -0.37 2585.9 199 -57.9 57.6
9 times used, S = 1.292
Velocity Ratios
KAKA KNA FITZ ASPA
KAKA 1.73 1.77 1.73 1.79
0.00 0.02 0.01 0.01
KNA 1.77 1.75 1.67 1.79
0.02 0.00 0.03 0.02
FITZ 1.73 1.67 1.73 1.96
0.01 0.03 0.00 0.05
ASPA 1.79 1.79 1.96 1.76
0.01 0.02 0.05 0.00
Date 1998-02-21
Origin Time 0209 35.21 +- 4.09
Zone 50
Easting 152.70 +- 35.05 Longitude 113.487
Northing 6960.19 +- 15.99 Latitude -27.437
Depth 5.00 +- 23.88 N
Arrival times = 7 S.D. = 0.522 Seismographs = 4
Nearest recorder = 315.5 km Gap = 229.0 deg Accuracy = C
Effects Code = Imax = 0 Fault =
73 km NW (295 deg) of KBAR
WESTERN AUSTRALIA
550 km NW (335 deg) of PERTH
185 km NW (323 deg) of GERALDTON
76 km W (292 deg) of Kalbarri
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 2.7
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
MRWA e P 79.00 0.30 0.64 79.47 -0.47 315.5 129 -42.2 42.2
MRWA e PG 86.00 0.50 0.58 86.68 -0.68 315.5 129 1.0 1.0
MRWA e S 113.00 0.30 0.57 112.46 0.54 315.5 129 -40.3 40.3
BAL e S 146.00 0.50 0.50 145.19 0.81 470.9 139 -40.3 40.3
MEEK i P 103.50 0.10 0.76 103.78 -0.28 516.3 81 -42.2 42.2
MEEK e S 154.90 0.20 0.59 154.78 0.12 516.3 81 -40.3 40.3
GIRL e P 106.60 0.20 0.66 106.22 0.38 536.9 8 -42.2 42.2
7 times used, S = 0.522
Velocity Ratios
MRWA MEEK
MRWA 1.78 1.71
0.02 0.05
MEEK 1.71 1.75
0.05 0.01
Date 1998-02-23
Origin Time 2327 18.55 +- 0.79
Zone 50
Easting 526.53 +- 23.48 Longitude 117.285
Northing 6299.73 +- 4.62 Latitude -33.441
Depth 2.06 +- 11.36
Arrival times = 7 S.D. = 0.044 Seismographs = 4
Nearest recorder = 57.3 km Gap = 179.0 deg Accuracy = B
Effects Code = Imax = 0 Fault =
31 km NE ( 55 deg) of BEAU
WESTERN AUSTRALIA
213 km SE (141 deg) of PERTH
181 km N (343 deg) of ALBANY
26 km SE (113 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 2.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i-P 27.90 0.10 1.32 27.90 -0.00 57.3 355 2.3 2.3
NWAO e S 34.40 0.10 0.83 34.39 0.01 57.3 355 2.3 2.3
RKG i P 39.40 0.10 1.23 39.38 0.02 127.7 191 1.1 1.1
RKG e S 53.80 1.00 0.49 53.83 -0.03 127.7 191 1.1 1.1
MUN e P 48.00 0.10 0.83 48.09 -0.09 191.0 327 -42.2 42.2
MUN e S 70.20 0.20 0.65 70.12 0.08 191.0 327 -40.3 40.3
KLB e S 74.10 0.10 0.74 74.09 0.01 209.8 12 -40.3 40.3
7 times used, S = 0.044
Deferred Data
KLB e P 50.00 2.00 0.45 50.37 -0.37 209.8 12 -42.2 42.2
BAL e S2 102.50 0.50 0.29 103.15 -0.65 318.9 350 -23.9 23.9
MRWA e S 134.00 2.00 0.38 131.79 2.21 483.9 345 -40.3 40.3
MRWA e SG 149.00 2.00 0.38 152.22 -3.22 483.9 345 0.3 0.3
Velocity Ratios
NWAO RKG MUN
NWAO 1.70 1.69 1.78
0.03 0.13 0.03
RKG 1.69 1.69 1.91
0.13 0.06 0.19
MUN 1.78 1.91 1.75
0.03 0.19 0.01
Date 1998-02-26
Origin Time 1413 6.76 +- 12.91
Zone 53
Easting 643.42 +- 46.73 Longitude 136.541
Northing 6310.60 +- 101.51 Latitude -33.334
Depth 5.00 +- 42.74 N
Arrival times = 7 S.D. = 0.812 Seismographs = 4
Nearest recorder = 849.4 km Gap = 328.9 deg Accuracy = D
Effects Code = Imax = 0 Fault =
39 km N ( 6 deg) of CLV
SOUTH AUSTRALIA
260 km NW (312 deg) of ADELAIDE
103 km W (251 deg) of WHYALLA
Record Dur Sync Unc Resp Seismometer Recorder Pol
ADE -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
FORT e P 115.90 0.50 0.52 115.58 0.32 849.4 287 -42.2 42.2
FORT e S 196.60 0.50 0.47 196.40 0.20 849.4 287 -40.3 40.3
WARB e P 162.80 0.30 0.56 163.35 -0.55 1244.3 307 -42.2 42.2
WARB e S 279.40 1.00 0.40 279.57 -0.17 1244.3 307 -40.3 40.3
WOOL e S 316.90 1.00 0.40 318.71 -1.81 1430.3 276 -40.3 40.3
WOOL e SG 402.50 1.00 0.40 401.86 0.64 1430.3 276 0.2 0.2
MEEK e SG 530.20 1.00 0.40 530.91 -0.71 1897.4 288 0.2 0.2
7 times used, S = 0.812
Deferred Data
FORT e SG 244.40 1.00 0.40 241.41 2.99 849.4 287 0.3 0.3
WARB e SG 359.50 1.00 0.40 350.48 9.02 1244.3 307 0.3 0.3
WOOL e P 190.50 0.50 0.51 185.83 4.67 1430.3 276 -42.2 42.2
KLB e P 231.00 1.00 0.44 229.47 1.53 1791.2 271 -42.2 42.2
NWAO e P 242.40 1.00 0.44 232.70 9.70 1817.9 266 -42.2 42.2
MEEK e P 235.30 0.50 0.51 242.34 -7.04 1897.4 288 -42.2 42.2
MEEK e S 411.10 1.00 0.40 417.09 -5.99 1897.4 288 -40.3 40.3
MUN e P 243.50 1.00 0.44 246.58 -3.08 1932.8 268 -42.2 42.2
MRWA e P 254.50 0.50 0.51 258.48 -3.98 2030.7 277 -42.2 42.2
MRWA e S 436.70 1.00 0.40 445.30 -8.60 2030.7 277 -40.4 40.4
FITZ e P 248.80 1.00 0.35 256.43 -7.63 2014.4 324 -42.2 42.2
FITZ e S 439.60 1.00 0.32 441.66 -2.06 2014.4 324 -40.4 40.4
FITZ e SG 581.90 1.00 0.32 563.22 18.68 2014.4 324 0.1 0.1
Velocity Ratios
FORT WARB
FORT 1.74 1.77
0.01 0.06
WARB 1.77 1.75
0.06 0.01