Data Report
Bulletin / 1995-04
Contributed by CUPWA
Date 1995-04-06
Origin Time 2324 50.76 +- 1.69
Zone 50
Easting 610.77 +- 7.22 Longitude 118.190
Northing 6314.95 +- 5.40 Latitude -33.299
Depth 4.34 +- 9.86
Arrival times = 15 S.D. = 0.557 Seismographs = 7
Nearest recorder = 98.3 km Gap = 163.3 deg Accuracy = B
Effects Code = Imax = 0 Fault =
46 km NW (301 deg) of PIN
WESTERN AUSTRALIA
266 km SE (125 deg) of PERTH
191 km N ( 9 deg) of ALBANY
34 km SW (230 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 3.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i-P 66.60 0.10 1.26 66.81 -0.21 98.3 294 2.7 2.7
NWAO e S 77.00 0.30 0.64 77.95 -0.95 98.3 294 2.7 2.7
NWAO e S2 78.80 0.10 0.44 79.38 -0.58 98.3 294 -23.9 23.9
NWAO e SG 78.80 0.10 0.80 77.95 0.85 98.3 294 2.7 2.7
RKG i-P 78.40 0.10 1.20 78.49 -0.09 178.2 217 -42.2 42.2
RKG e S 99.20 0.10 0.75 99.22 -0.02 178.2 217 -40.3 40.3
KLB e P 80.60 0.10 0.83 80.35 0.25 193.5 347 -42.2 42.2
KLB e S 102.20 0.20 0.65 102.45 -0.25 193.5 347 -40.3 40.3
MUN e P 86.50 0.30 0.66 85.55 0.95 236.6 307 -42.2 42.2
MUN e S 112.00 0.30 0.59 111.51 0.49 236.6 307 -40.3 40.3
BAL e P 97.30 0.50 0.57 96.81 0.49 329.7 334 -42.2 42.2
BAL e S 131.30 0.30 0.57 131.12 0.18 329.7 334 -40.3 40.3
WOOL e P 106.70 0.50 0.56 106.71 -0.01 411.5 53 -42.2 42.2
WOOL e S 148.20 2.00 0.38 148.35 -0.15 411.5 53 -40.3 40.3
MRWA e S 165.30 0.30 0.55 166.59 -1.29 498.2 334 -40.3 40.3
15 times used, S = 0.557
Deferred Data
RKG e SG 110.00 0.30 0.61 99.99 10.01 178.2 217 1.5 1.5
BAL e SG 139.70 0.30 0.57 141.84 -2.14 329.7 334 0.8 0.8
WOOL e S2 161.20 2.00 0.21 158.47 2.73 411.5 53 -23.9 23.9
MRWA e P 118.70 0.20 0.66 117.19 1.51 498.2 334 -42.2 42.2
MRWA e SG 185.50 0.50 0.50 188.38 -2.88 498.2 334 0.5 0.5
MEEK e P 146.90 0.20 0.64 146.38 0.52 739.4 3 -42.2 42.2
MEEK e S 215.70 0.30 0.53 217.41 -1.71 739.4 3 -40.3 40.3
FORT e P 176.10 0.20 0.62 175.02 1.08 976.6 76 -42.2 42.2
FORT e S 265.00 0.30 0.51 267.29 -2.29 976.6 76 -40.3 40.3
WARB e P 194.50 0.20 0.61 194.78 -0.28 1139.7 48 -42.2 42.2
WARB e S 302.00 0.30 0.51 301.68 0.32 1139.7 48 -40.3 40.3
Velocity Ratios
NWAO RKG KLB MUN BAL WOOL
NWAO 1.66 1.88 1.80 1.76 1.77 1.78
0.03 0.07 0.06 0.07 0.06 0.09
RKG 1.88 1.75 0.00 1.58 1.70 1.73
0.07 0.01 0.00 0.13 0.08 0.11
KLB 1.80 0.00 1.72 0.00 1.74 1.76
0.06 0.00 0.01 0.00 0.10 0.13
MUN 1.76 1.58 0.00 1.71 0.00 1.79
0.07 0.13 0.00 0.02 0.00 0.19
BAL 1.77 1.70 1.74 0.00 1.73 0.00
0.06 0.08 0.10 0.00 0.03 0.00
WOOL 1.78 1.73 1.76 1.79 0.00 1.74
0.09 0.11 0.13 0.19 0.00 0.05
Date 1995-04-16
Origin Time 0020 11.96 +- 2.93
Zone 50
Easting 610.95 +- 9.48 Longitude 118.192
Northing 6314.66 +- 9.67 Latitude -33.301
Depth 5.00 +- 18.21 N
Arrival times = 12 S.D. = 0.694 Seismographs = 5
Nearest recorder = 98.6 km Gap = 163.5 deg Accuracy = B
Effects Code = Imax = 0 Fault =
45 km NW (301 deg) of PIN
WESTERN AUSTRALIA
266 km SE (125 deg) of PERTH
191 km N ( 9 deg) of ALBANY
34 km SW (229 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 2.2
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 27.40 0.30 0.71 28.07 -0.67 98.6 294 3.1 3.1
NWAO e S 39.70 0.30 0.64 39.24 0.46 98.6 294 3.1 3.1
RKG e P 39.30 0.30 0.67 39.61 -0.31 178.1 217 -42.2 42.2
RKG e S 60.30 0.30 0.61 60.28 0.02 178.1 217 -40.3 40.3
KLB w P 42.00 2.00 0.47 41.52 0.48 193.8 347 -42.2 42.2
KLB e S 63.30 0.50 0.54 63.60 -0.30 193.8 347 -40.3 40.3
KLB e S2 64.90 0.50 0.30 64.64 0.26 193.8 347 -23.9 23.9
MUN e P 48.00 0.30 0.66 46.72 1.28 236.9 307 -42.2 42.2
MUN e S 73.00 0.50 0.53 72.66 0.34 236.9 307 -40.3 40.3
MUN e SG 76.30 0.50 0.53 77.42 -1.12 236.9 307 1.3 1.3
WOOL e S 109.10 0.30 0.56 109.43 -0.33 411.5 53 -40.3 40.3
WOOL e S2 119.80 0.30 0.31 119.61 0.19 411.5 53 -23.9 23.9
12 times used, S = 0.694
Velocity Ratios
NWAO RKG KLB MUN
NWAO 1.80 1.73 0.00 1.62
0.06 0.15 0.00 0.09
RKG 1.73 1.77 0.00 0.00
0.15 0.03 0.00 0.00
KLB 0.00 0.00 1.71 0.00
0.00 0.00 0.14 0.00
MUN 1.62 0.00 0.00 1.69
0.09 0.00 0.00 0.03
Date 1995-04-16
Origin Time 0027 45.34 +- 10.02
Zone 50
Easting 613.98 +- 53.81 Longitude 118.224
Northing 6316.04 +- 18.34 Latitude -33.289
Depth 5.00 +- 29.24 N
Arrival times = 7 S.D. = 0.562 Seismographs = 4
Nearest recorder = 100.8 km Gap = 230.9 deg Accuracy = C
Effects Code = Imax = 0 Fault =
44 km NW (304 deg) of PIN
WESTERN AUSTRALIA
268 km SE (124 deg) of PERTH
193 km N ( 10 deg) of ALBANY
31 km SW (228 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 1.9
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 61.50 0.20 0.77 61.80 -0.30 100.8 293 3.0 3.0
NWAO e S 73.70 0.30 0.64 73.21 0.49 100.8 293 3.0 3.0
RKG e P 73.40 0.30 0.67 73.34 0.06 181.0 217 -42.2 42.2
RKG e S 94.20 0.50 0.55 94.28 -0.08 181.0 217 -40.3 40.3
KLB e S 97.00 2.00 0.41 96.83 0.17 193.1 346 -40.3 40.3
MUN e S 107.20 0.50 0.53 106.36 0.84 238.4 307 -40.3 40.3
MUN e SG 110.20 0.50 0.53 111.22 -1.02 238.4 307 1.3 1.3
7 times used, S = 0.562
Velocity Ratios
NWAO RKG
NWAO 1.75 1.72
0.04 0.15
RKG 1.72 1.74
0.15 0.04
Date 1995-04-16
Origin Time 0104 53.99 +- 7.52
Zone 50
Easting 611.16 +- 37.28 Longitude 118.194
Northing 6313.64 +- 13.93 Latitude -33.310
Depth 5.00 +- 31.76 N
Arrival times = 8 S.D. = 0.753 Seismographs = 4
Nearest recorder = 99.2 km Gap = 229.8 deg Accuracy = C
Effects Code = Imax = 0 Fault =
45 km NW (300 deg) of PIN
WESTERN AUSTRALIA
267 km SE (125 deg) of PERTH
190 km N ( 9 deg) of ALBANY
35 km SW (228 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 1.7
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 69.30 0.30 0.71 70.20 -0.90 99.2 295 3.0 3.0
NWAO e S 81.60 0.30 0.64 81.43 0.17 99.2 295 3.0 3.0
RKG e P 81.30 0.30 0.67 81.55 -0.25 177.4 217 -42.2 42.2
RKG e S 102.30 0.50 0.55 102.16 0.14 177.4 217 -40.3 40.3
KLB e S 105.50 0.50 0.54 105.85 -0.35 194.9 347 -40.3 40.3
KLB e S2 106.70 0.50 0.30 106.92 -0.22 194.9 347 -23.9 23.9
MUN e P 90.10 0.30 0.66 88.84 1.26 237.7 308 -42.2 42.2
MUN e S2 118.10 0.50 0.30 117.73 0.37 237.7 308 -23.9 23.9
8 times used, S = 0.753
Deferred Data
MUN e S 118.10 0.50 0.53 114.85 3.25 237.7 308 -40.3 40.3
Velocity Ratios
NWAO RKG
NWAO 1.80 1.72
0.06 0.16
RKG 1.72 1.77
0.16 0.04
Date 1995-04-16
Origin Time 0248 8.15 +- 1.36
Zone 50
Easting 609.69 +- 7.91 Longitude 118.179
Northing 6308.41 +- 20.09 Latitude -33.358
Depth 5.00 +- 17.35 N
Arrival times = 11 S.D. = 0.243 Seismographs = 6
Nearest recorder = 100.3 km Gap = 245.0 deg Accuracy = C
Effects Code = Imax = 0 Fault =
44 km NW (293 deg) of PIN
WESTERN AUSTRALIA
269 km SE (126 deg) of PERTH
184 km N ( 9 deg) of ALBANY
39 km SW (223 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 2.6
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 24.45 0.10 0.88 24.53 -0.08 100.3 298 3.0 3.0
NWAO e S 35.80 0.10 0.79 35.90 -0.10 100.3 298 3.0 3.0
KLB e P2 39.00 0.20 0.43 38.90 0.10 199.7 348 -30.8 30.8
KLB e S 61.00 0.10 0.75 61.03 -0.03 199.7 348 -40.3 40.3
MUN e P2 44.90 0.20 0.43 44.52 0.38 239.9 309 -30.8 30.8
MUN e S2 73.00 1.00 0.26 72.44 0.56 239.9 309 -23.9 23.9
BAL e S2 97.00 1.00 0.25 96.51 0.49 335.2 335 -23.9 23.9
WOOL e P 64.80 0.30 0.62 64.59 0.21 416.2 53 -42.2 42.2
WOOL e S 106.20 0.30 0.56 106.60 -0.40 416.2 53 -40.3 40.3
WOOL e S2 117.40 0.50 0.28 116.97 0.43 416.2 53 -23.9 23.9
MRWA e S 125.00 1.00 0.43 125.01 -0.01 503.7 335 -40.3 40.3
11 times used, S = 0.243
Deferred Data
MRWA w P 77.50 1.00 0.49 75.17 2.33 503.7 335 -42.2 42.2
MRWA e SG 143.00 1.00 0.43 147.28 -4.28 503.7 335 0.6 0.6
Velocity Ratios
NWAO WOOL
NWAO 1.70 1.74
0.02 0.03
WOOL 1.74 1.73
0.03 0.01
Date 1995-04-16
Origin Time 0311 40.72 +- 12.07
Zone 50
Easting 611.70 +- 59.75 Longitude 118.200
Northing 6313.34 +- 20.83 Latitude -33.313
Depth 5.00 +- 47.47 N
Arrival times = 6 S.D. = 0.417 Seismographs = 4
Nearest recorder = 99.9 km Gap = 230.1 deg Accuracy = C
Effects Code = Imax = 0 Fault =
44 km NW (300 deg) of PIN
WESTERN AUSTRALIA
267 km SE (125 deg) of PERTH
190 km N ( 9 deg) of ALBANY
35 km SW (227 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 1.8
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 56.40 0.30 0.71 57.03 -0.63 99.9 295 3.0 3.0
NWAO e S 68.60 0.30 0.64 68.34 0.26 99.9 295 3.0 3.0
RKG e P 68.50 0.50 0.61 68.30 0.20 177.5 217 -42.2 42.2
RKG e S 89.00 0.50 0.55 88.92 0.08 177.5 217 -40.3 40.3
KLB e S 92.90 0.50 0.54 92.67 0.23 195.3 347 -40.3 40.3
MUN e S2 105.00 0.30 0.33 104.62 0.38 238.3 307 -23.9 23.9
6 times used, S = 0.417
Deferred Data
MUN e S 105.00 0.30 0.59 101.72 3.28 238.3 307 -40.3 40.3
Velocity Ratios
NWAO RKG
NWAO 1.78 1.69
0.05 0.19
RKG 1.69 1.74
0.19 0.05
Date 1995-04-16
Origin Time 0445 24.90 +- 2.27
Zone 50
Easting 608.16 +- 8.97 Longitude 118.162
Northing 6315.47 +- 10.59 Latitude -33.294
Depth 5.00 +- 16.46 N
Arrival times = 10 S.D. = 0.540 Seismographs = 5
Nearest recorder = 95.7 km Gap = 162.3 deg Accuracy = B
Effects Code = Imax = 0 Fault =
48 km NW (300 deg) of PIN
WESTERN AUSTRALIA
263 km SE (125 deg) of PERTH
191 km N ( 8 deg) of ALBANY
36 km SW (233 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
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 40.20 0.30 0.71 40.54 -0.34 95.7 295 3.1 3.1
NWAO e S 52.40 0.30 0.64 51.39 1.01 95.7 295 3.1 3.1
RKG e P 52.30 0.50 0.61 52.42 -0.12 177.0 216 -42.2 42.2
RKG e S 73.00 0.50 0.55 73.00 0.00 177.0 216 -40.3 40.3
KLB e P 54.00 2.00 0.46 54.30 -0.30 192.5 348 -42.2 42.2
KLB e S 76.00 0.50 0.54 76.26 -0.26 192.5 348 -40.3 40.3
MUN e S 84.80 0.30 0.59 85.04 -0.24 234.2 308 -40.3 40.3
MUN e SG 89.20 0.30 0.59 89.62 -0.42 234.2 308 1.3 1.3
WOOL e S 123.70 0.50 0.51 122.75 0.95 413.3 54 -40.3 40.3
WOOL e SG 138.80 0.50 0.51 139.08 -0.28 413.3 54 0.7 0.7
10 times used, S = 0.540
Deferred Data
MUN e P 61.00 0.30 0.66 59.34 1.66 234.2 308 -42.2 42.2
Velocity Ratios
NWAO RKG KLB
NWAO 1.80 1.70 0.00
0.06 0.19 0.00
RKG 1.70 1.76 0.00
0.19 0.05 0.00
KLB 0.00 0.00 1.76
0.00 0.00 0.15
Date 1995-04-16
Origin Time 1321 28.51 +- 13.55
Zone 50
Easting 613.48 +- 60.65 Longitude 118.219
Northing 6312.81 +- 20.85 Latitude -33.318
Depth 5.00 +- 46.68 N
Arrival times = 6 S.D. = 0.232 Seismographs = 4
Nearest recorder = 101.7 km Gap = 231.1 deg Accuracy = C
Effects Code = Imax = 0 Fault =
42 km NW (300 deg) of PIN
WESTERN AUSTRALIA
269 km SE (125 deg) of PERTH
189 km N ( 10 deg) of ALBANY
34 km SW (224 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 2.2
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 44.80 0.50 0.64 45.12 -0.32 101.7 295 3.0 3.0
NWAO e S 56.70 0.30 0.64 56.64 0.06 101.7 295 3.0 3.0
RKG e S 77.00 0.50 0.55 76.86 0.14 178.2 218 -40.3 40.3
KLB e S 80.70 0.50 0.54 80.65 0.05 196.2 347 -40.3 40.3
KLB e S2 82.00 0.50 0.30 81.78 0.22 196.2 347 -23.9 23.9
MUN e S2 93.20 0.50 0.30 92.85 0.35 240.0 307 -23.9 23.9
6 times used, S = 0.232
Deferred Data
NWAO e SN 63.40 0.50 0.38 60.75 2.65 101.7 295 -40.3 40.3
MUN e S 93.20 0.50 0.53 89.87 3.33 240.0 307 -40.3 40.3
Velocity Ratios
NWAO
NWAO 1.73
0.07
Date 1995-04-16
Origin Time 1753 38.92 +- 5.91
Zone 50
Easting 614.87 +- 30.82 Longitude 118.234
Northing 6316.14 +- 9.83 Latitude -33.288
Depth 5.00 +- 23.17 N
Arrival times = 8 S.D. = 0.564 Seismographs = 4
Nearest recorder = 101.6 km Gap = 231.4 deg Accuracy = C
Effects Code = Imax = 0 Fault =
43 km NW (305 deg) of PIN
WESTERN AUSTRALIA
268 km SE (124 deg) of PERTH
193 km N ( 10 deg) of ALBANY
30 km SW (227 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 1.8
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 55.00 0.30 0.71 55.51 -0.51 101.6 293 3.0 3.0
NWAO e S 67.00 0.30 0.64 67.01 -0.01 101.6 293 3.0 3.0
RKG e P 67.00 0.50 0.61 67.00 -0.00 181.6 218 -42.2 42.2
RKG e S 87.30 0.50 0.55 87.99 -0.69 181.6 218 -40.3 40.3
RKG e SG 90.00 0.50 0.55 89.12 0.88 181.6 218 1.7 1.7
KLB e S 90.70 0.50 0.54 90.43 0.27 193.2 346 -40.3 40.3
KLB e S2 92.00 0.50 0.30 91.44 0.56 193.2 346 -23.9 23.9
MUN e S2 103.80 0.50 0.30 103.01 0.79 239.1 306 -23.9 23.9
8 times used, S = 0.564
Deferred Data
MUN e P 76.00 1.00 0.52 73.94 2.06 239.1 306 -42.2 42.2
Velocity Ratios
NWAO RKG
NWAO 1.75 1.69
0.05 0.19
RKG 1.69 1.72
0.19 0.05
Date 1995-04-16
Origin Time 2040 43.98 +- 2.33
Zone 50
Easting 608.26 +- 9.07 Longitude 118.163
Northing 6311.73 +- 6.62 Latitude -33.328
Depth 5.00 +- 16.35 N
Arrival times = 10 S.D. = 0.478 Seismographs = 5
Nearest recorder = 97.5 km Gap = 163.5 deg Accuracy = B
Effects Code = Imax = 0 Fault =
46 km NW (296 deg) of PIN
WESTERN AUSTRALIA
265 km SE (126 deg) of PERTH
187 km N ( 8 deg) of ALBANY
38 km SW (228 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 2.4
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 59.20 0.10 0.88 59.91 -0.71 97.5 297 3.1 3.1
NWAO i S 71.10 0.10 1.14 70.95 0.15 97.5 297 3.1 3.1
RKG e P 71.00 0.10 0.84 71.15 -0.15 174.1 217 -30.8 30.8
RKG e S 92.00 0.20 0.66 91.47 0.53 174.1 217 -40.3 40.3
KLB e P 74.00 0.50 0.60 73.82 0.18 196.2 348 -42.2 42.2
KLB e S 96.60 0.50 0.54 96.12 0.48 196.2 348 -40.3 40.3
MUN e P2 80.00 1.00 0.31 79.91 0.09 236.6 308 -30.8 30.8
MUN e S2 108.00 1.00 0.26 107.46 0.54 236.6 308 -23.9 23.9
WOOL e S 142.00 0.30 0.56 142.27 -0.27 415.4 53 -40.3 40.3
WOOL e S2 153.60 0.50 0.28 152.61 0.99 415.4 53 -23.9 23.9
10 times used, S = 0.478
Deferred Data
WOOL e SG 154.50 0.50 0.51 158.74 -4.24 415.4 53 0.7 0.7
Velocity Ratios
NWAO RKG KLB
NWAO 1.78 1.77 1.72
0.02 0.06 0.12
RKG 1.77 1.78 0.00
0.06 0.01 0.00
KLB 1.72 0.00 1.75
0.12 0.00 0.05
Date 1995-04-17
Origin Time 0533 6.95 +- 1.52
Zone 50
Easting 609.28 +- 5.38 Longitude 118.174
Northing 6315.60 +- 5.27 Latitude -33.293
Depth 5.00 +- 10.17 N
Arrival times = 15 S.D. = 0.502 Seismographs = 7
Nearest recorder = 96.7 km Gap = 162.6 deg Accuracy = B
Effects Code = Imax = 0 Fault =
47 km NW (301 deg) of PIN
WESTERN AUSTRALIA
264 km SE (125 deg) of PERTH
191 km N ( 8 deg) of ALBANY
35 km SW (232 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 3.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 22.40 0.10 0.88 22.75 -0.35 96.7 294 3.1 3.1
NWAO e S 33.80 0.10 0.80 33.70 0.10 96.7 294 3.1 3.1
RKG i-P 34.40 0.10 1.20 34.57 -0.17 177.8 216 -42.2 42.2
RKG e S 55.00 0.20 0.66 55.21 -0.21 177.8 216 -40.3 40.3
KLB e P 36.70 0.20 0.73 36.36 0.34 192.6 348 -42.2 42.2
KLB e S 58.20 0.10 0.75 58.33 -0.13 192.6 348 -40.3 40.3
KLB e SG 59.30 0.20 0.65 60.17 -0.87 192.6 348 1.6 1.6
MUN e P 42.70 0.10 0.82 41.48 1.22 235.0 307 -42.2 42.2
MUN e S 67.00 0.20 0.64 67.26 -0.26 235.0 307 -40.3 40.3
BAL e P 53.00 2.00 0.44 52.79 0.21 328.5 334 -42.2 42.2
BAL e S 87.00 0.50 0.52 86.94 0.06 328.5 334 -40.3 40.3
WOOL e P 62.60 0.20 0.67 62.93 -0.33 412.3 54 -42.2 42.2
WOOL e S 104.70 0.30 0.56 104.60 0.10 412.3 54 -40.3 40.3
WOOL e S2 115.20 0.50 0.28 114.81 0.39 412.3 54 -23.9 23.9
MRWA e P 73.40 0.10 0.76 73.16 0.24 496.9 334 -42.2 42.2
15 times used, S = 0.502
Deferred Data
BAL e SG 95.00 0.10 0.71 97.70 -2.70 328.5 334 0.9 0.9
WOOL e P2 69.80 0.30 0.37 67.49 2.31 412.3 54 -30.8 30.8
MRWA e S 125.00 0.50 0.50 122.41 2.59 496.9 334 -40.3 40.3
MRWA e SG 141.00 0.50 0.50 144.24 -3.24 496.9 334 0.6 0.6
MEEK e P 103.60 0.30 0.59 102.44 1.16 738.8 3 -42.2 42.2
MEEK e S 173.60 0.30 0.53 173.37 0.23 738.8 3 -40.3 40.3
Velocity Ratios
NWAO RKG KLB MUN BAL WOOL
NWAO 1.74 1.77 1.71 1.64 1.74 1.76
0.02 0.06 0.05 0.03 0.15 0.02
RKG 1.77 1.75 0.00 1.45 0.00 1.76
0.06 0.01 0.00 0.09 0.00 0.04
KLB 1.71 0.00 1.72 1.47 0.00 1.80
0.05 0.00 0.02 0.13 0.00 0.04
MUN 1.64 1.45 1.47 1.68 0.00 1.89
0.03 0.09 0.13 0.01 0.00 0.05
BAL 1.74 0.00 0.00 0.00 1.74 0.00
0.15 0.00 0.00 0.00 0.09 0.00
WOOL 1.76 1.76 1.80 1.89 0.00 1.76
0.02 0.04 0.04 0.05 0.00 0.01
Date 1995-04-17
Origin Time 0551 1.11 +- 10.64
Zone 50
Easting 613.72 +- 53.43 Longitude 118.222
Northing 6314.11 +- 18.72 Latitude -33.306
Depth 5.00 +- 41.63 N
Arrival times = 6 S.D. = 0.352 Seismographs = 4
Nearest recorder = 101.3 km Gap = 231.1 deg Accuracy = C
Effects Code = Imax = 0 Fault =
43 km NW (302 deg) of PIN
WESTERN AUSTRALIA
269 km SE (125 deg) of PERTH
191 km N ( 10 deg) of ALBANY
33 km SW (225 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 2.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 17.30 0.20 0.77 17.66 -0.36 101.3 294 3.0 3.0
NWAO e S 29.30 0.30 0.64 29.14 0.16 101.3 294 3.0 3.0
RKG e P 29.30 0.50 0.61 28.91 0.39 179.4 218 -42.2 42.2
RKG e S 49.50 0.50 0.55 49.70 -0.20 179.4 218 -40.3 40.3
KLB e S 53.00 0.50 0.54 52.98 0.02 194.9 347 -40.3 40.3
MUN e S2 66.00 0.50 0.30 65.29 0.71 239.4 307 -23.9 23.9
6 times used, S = 0.352
Velocity Ratios
NWAO RKG
NWAO 1.74 1.68
0.04 0.18
RKG 1.68 1.72
0.18 0.05
Date 1995-04-19
Origin Time 0218 54.81 +- 0.96
Zone 50
Easting 609.97 +- 3.61 Longitude 118.181
Northing 6316.82 +- 4.64 Latitude -33.282
Depth 1.00 +- 7.50 C
Arrival times = 22 S.D. = 0.519 Seismographs = 9
Nearest recorder = 96.8 km Gap = 140.6 deg Accuracy = B
Effects Code = Imax = 0 Fault =
47 km NW (302 deg) of PIN
WESTERN AUSTRALIA
264 km SE (125 deg) of PERTH
193 km N ( 9 deg) of ALBANY
34 km SW (233 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 2.8
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i-P 70.70 0.10 1.26 70.61 0.09 96.8 293 0.7 0.7
NWAO e S 82.00 0.30 0.64 81.56 0.44 96.8 293 0.7 0.7
NWAO e S2 82.70 0.30 0.36 83.43 -0.73 96.8 293 -23.9 23.9
RKG e P 83.00 0.20 0.73 83.03 -0.03 179.2 216 -30.8 30.8
RKG e S 103.30 0.30 0.61 104.08 -0.78 179.2 216 -40.3 40.3
RKG e S2 104.00 0.50 0.30 104.23 -0.23 179.2 216 -23.9 23.9
KLB e P 85.10 0.10 0.83 84.53 0.57 191.5 348 -42.2 42.2
KLB e SG 106.90 0.10 0.75 107.72 -0.82 191.5 348 0.4 0.4
KLB e S 106.90 0.10 0.75 106.69 0.21 191.5 348 -40.3 40.3
MUN e S 116.40 0.20 0.64 115.79 0.61 234.8 307 -40.3 40.3
MUN e SG 119.30 0.20 0.64 119.67 -0.37 234.8 307 0.3 0.3
BAL e PG 108.00 2.00 0.44 108.26 -0.26 327.6 334 0.2 0.2
BAL e S 135.00 1.00 0.45 135.34 -0.34 327.6 334 -40.3 40.3
WOOL e P 111.10 0.30 0.62 111.08 0.02 411.1 54 -42.2 42.2
WOOL e S 152.90 0.50 0.51 152.91 -0.01 411.1 54 -40.3 40.3
WOOL e S2 161.80 1.00 0.24 162.79 -0.99 411.1 54 -23.9 23.9
MRWA e P 122.30 0.50 0.55 121.36 0.94 496.1 334 -42.2 42.2
MRWA e S 170.30 0.50 0.50 170.81 -0.51 496.1 334 -40.3 40.3
FORT e P 179.30 0.30 0.57 179.49 -0.19 976.9 76 -42.2 42.2
FORT e S 272.90 0.50 0.46 272.01 0.89 976.9 76 -40.3 40.3
WARB e P 198.70 0.50 0.51 199.12 -0.42 1139.0 48 -42.2 42.2
WARB e S 305.90 1.00 0.40 306.19 -0.29 1139.0 48 -40.3 40.3
22 times used, S = 0.519
Deferred Data
MUN e P 91.10 0.10 0.82 89.76 1.34 234.8 307 -42.2 42.2
MUN e S2 116.40 0.20 0.36 118.28 -1.88 234.8 307 -23.9 23.9
BAL e SG 143.30 0.30 0.57 145.32 -2.02 327.6 334 0.2 0.2
MRWA e SG 190.00 0.50 0.50 191.86 -1.86 496.1 334 0.2 0.2
Velocity Ratios
NWAO RKG KLB WOOL MRWA FORT WARB
NWAO 1.71 1.73 1.73 1.75 1.71 1.76 1.75
0.03 0.09 0.05 0.04 0.04 0.01 0.02
RKG 1.73 1.72 0.00 1.77 1.70 1.76 1.75
0.09 0.02 0.00 0.06 0.05 0.02 0.02
KLB 1.73 0.00 1.72 1.77 1.70 1.76 1.75
0.05 0.00 0.01 0.05 0.04 0.01 0.02
WOOL 1.75 1.77 1.77 1.74 0.00 1.76 1.75
0.04 0.06 0.05 0.02 0.00 0.03 0.03
MRWA 1.71 1.70 1.70 0.00 1.71 1.80 1.77
0.04 0.05 0.04 0.00 0.02 0.04 0.04
FORT 1.76 1.76 1.76 1.76 1.80 1.75 1.70
0.01 0.02 0.01 0.03 0.04 0.01 0.15
WARB 1.75 1.75 1.75 1.75 1.77 1.70 1.75
0.02 0.02 0.02 0.03 0.04 0.15 0.01
Date 1995-04-20
Origin Time 1204 20.72 +- 0.66
Zone 50
Easting 611.59 +- 2.24 Longitude 118.198
Northing 6315.66 +- 2.92 Latitude -33.292
Depth 1.02 +- 5.50
Arrival times = 21 S.D. = 0.326 Seismographs = 10
Nearest recorder = 98.8 km Gap = 141.3 deg Accuracy = B
Effects Code = Imax = 0 Fault =
45 km NW (302 deg) of PIN
WESTERN AUSTRALIA
266 km SE (125 deg) of PERTH
192 km N ( 9 deg) of ALBANY
33 km SW (230 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 3.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i-P 36.80 0.10 1.26 36.83 -0.03 98.8 294 0.7 0.7
NWAO e S 48.30 0.20 0.69 48.00 0.30 98.8 294 0.7 0.7
NWAO e S2 49.10 0.20 0.38 49.83 -0.73 98.8 294 -23.9 23.9
RKG i-P 48.90 0.10 1.20 48.94 -0.04 179.2 217 -30.8 30.8
RKG e S 70.00 0.20 0.66 70.00 0.00 179.2 217 -40.3 40.3
KLB e P 50.50 0.20 0.72 50.61 -0.11 193.0 347 -42.2 42.2
KLB e S 72.70 0.20 0.65 72.89 -0.19 193.0 347 -40.3 40.3
MUN e P 56.40 0.30 0.66 55.90 0.50 236.8 307 -42.2 42.2
MUN e S 82.10 0.20 0.64 82.10 -0.00 236.8 307 -40.3 40.3
BAL e P 67.50 1.00 0.50 67.10 0.40 329.4 334 -42.2 42.2
BAL e PG 74.00 0.50 0.57 74.45 -0.45 329.4 334 0.2 0.2
BAL e S 101.00 0.50 0.52 101.60 -0.60 329.4 334 -40.3 40.3
WOOL e P 77.10 0.30 0.62 76.90 0.20 410.4 53 -42.2 42.2
WOOL e S 119.00 0.30 0.56 118.67 0.33 410.4 53 -40.3 40.3
MRWA e S 137.00 1.00 0.43 137.07 -0.07 497.8 334 -40.3 40.3
MEEK e P 117.40 0.50 0.53 116.61 0.79 738.6 3 -42.2 42.2
MEEK e S 188.10 0.50 0.48 187.80 0.30 738.6 3 -40.3 40.3
FORT e P 145.00 0.30 0.57 145.23 -0.23 975.6 76 -42.2 42.2
FORT e S2 270.70 1.00 0.22 271.24 -0.54 975.6 76 -23.9 23.9
WARB e P 164.50 0.30 0.56 164.97 -0.47 1138.6 48 -42.2 42.2
WARB e S 271.90 0.30 0.51 272.00 -0.10 1138.6 48 -40.3 40.3
21 times used, S = 0.326
Deferred Data
BAL e SG 110.50 0.50 0.52 111.70 -1.20 329.4 334 0.2 0.2
WOOL e S2 131.40 0.50 0.28 128.53 2.87 410.4 53 -23.9 23.9
MRWA e SG 157.00 0.50 0.50 158.24 -1.24 497.8 334 0.2 0.2
FORT e S 239.30 0.30 0.51 237.63 1.67 975.6 76 -40.3 40.3
WARB e SG 332.20 0.50 0.46 335.24 -3.04 1138.6 48 0.1 0.1
Velocity Ratios
NWAO RKG KLB MUN BAL WOOL MEEK WARB
NWAO 1.71 1.79 1.78 1.72 1.72 1.75 1.73 1.75
0.02 0.06 0.07 0.06 0.09 0.03 0.02 0.01
RKG 1.79 1.75 0.00 1.61 1.67 1.74 1.72 1.75
0.06 0.01 0.00 0.15 0.14 0.04 0.03 0.01
KLB 1.78 0.00 1.75 0.00 1.66 1.74 1.72 1.75
0.07 0.00 0.02 0.00 0.17 0.05 0.03 0.01
MUN 1.72 1.61 0.00 1.72 0.00 1.78 1.74 1.76
0.06 0.15 0.00 0.02 0.00 0.08 0.03 0.01
BAL 1.72 1.67 1.66 0.00 1.72 0.00 1.75 1.76
0.09 0.14 0.17 0.00 0.05 0.00 0.07 0.03
WOOL 1.75 1.74 1.74 1.78 0.00 1.74 1.71 1.75
0.03 0.04 0.05 0.08 0.00 0.01 0.05 0.02
MEEK 1.73 1.72 1.72 1.74 1.75 1.71 1.73 1.78
0.02 0.03 0.03 0.03 0.07 0.05 0.01 0.05
WARB 1.75 1.75 1.75 1.76 1.76 1.75 1.78 1.75
0.01 0.01 0.01 0.01 0.03 0.02 0.05 0.01
Date 1995-04-20
Origin Time 1212 24.55 +- 0.90
Zone 50
Easting 610.54 +- 3.54 Longitude 118.188
Northing 6312.93 +- 5.15 Latitude -33.317
Depth 1.39 +- 7.88
Arrival times = 17 S.D. = 0.482 Seismographs = 10
Nearest recorder = 99.0 km Gap = 141.7 deg Accuracy = B
Effects Code = Imax = 0 Fault =
45 km NW (299 deg) of PIN
WESTERN AUSTRALIA
267 km SE (125 deg) of PERTH
189 km N ( 9 deg) of ALBANY
36 km SW (228 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 2.7
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i-P 40.40 0.10 1.26 40.70 -0.30 99.0 295 1.0 1.0
NWAO e S 52.60 0.20 0.69 51.90 0.70 99.0 295 1.0 1.0
RKG e P 52.30 0.20 0.73 52.35 -0.05 176.4 217 -30.8 30.8
RKG e S 73.00 0.30 0.61 73.18 -0.18 176.4 217 -40.3 40.3
KLB e P 54.70 0.10 0.83 54.70 0.00 195.4 348 -42.2 42.2
KLB e S 77.00 0.20 0.65 77.18 -0.18 195.4 348 -40.3 40.3
MUN e P 60.50 0.20 0.71 59.80 0.70 237.7 308 -42.2 42.2
MUN e S 86.20 0.30 0.59 86.06 0.14 237.7 308 -40.3 40.3
BAL e S 105.00 0.50 0.52 105.80 -0.80 331.4 334 -40.3 40.3
WOOL e P 81.00 0.30 0.62 80.99 0.01 412.8 53 -42.2 42.2
WOOL e S 122.70 0.30 0.56 122.95 -0.25 412.8 53 -40.3 40.3
MRWA e S 141.00 0.50 0.50 141.27 -0.27 499.9 334 -40.3 40.3
MEEK e P 121.60 0.50 0.53 120.74 0.86 741.4 3 -42.2 42.2
MEEK e S 192.10 0.50 0.48 192.16 -0.06 741.4 3 -40.3 40.3
FORT e P 149.10 0.30 0.57 149.22 -0.12 977.3 75 -42.2 42.2
FORT e S 243.00 0.50 0.46 241.75 1.25 977.3 75 -40.3 40.3
WARB e P 168.50 0.50 0.51 169.07 -0.57 1141.2 47 -42.2 42.2
17 times used, S = 0.482
Deferred Data
BAL e PG 80.50 0.50 0.57 78.61 1.89 331.4 334 0.3 0.3
BAL e S2 114.00 0.50 0.29 112.37 1.63 331.4 334 -23.9 23.9
WOOL e S2 135.00 0.50 0.28 132.94 2.06 412.8 53 -23.9 23.9
MRWA e SG 160.00 0.50 0.50 162.64 -2.64 499.9 334 0.2 0.2
WARB e S 277.70 0.70 0.43 276.31 1.39 1141.2 47 -40.3 40.3
WARB e SG 335.80 1.00 0.40 339.80 -4.00 1141.2 47 0.1 0.1
Velocity Ratios
NWAO RKG KLB MUN WOOL MEEK FORT
NWAO 1.77 1.71 1.71 1.67 1.73 1.72 1.75
0.02 0.09 0.05 0.05 0.03 0.02 0.01
RKG 1.71 1.75 0.00 1.61 1.73 1.72 1.76
0.09 0.02 0.00 0.16 0.05 0.03 0.02
KLB 1.71 0.00 1.74 1.59 1.74 1.72 1.76
0.05 0.00 0.01 0.18 0.05 0.03 0.01
MUN 1.67 1.61 1.59 1.71 1.78 1.73 1.77
0.05 0.16 0.18 0.02 0.07 0.03 0.02
WOOL 1.73 1.73 1.74 1.78 1.74 1.71 1.77
0.03 0.05 0.05 0.07 0.01 0.05 0.03
MEEK 1.72 1.72 1.72 1.73 1.71 1.73 1.85
0.02 0.03 0.03 0.03 0.05 0.01 0.09
FORT 1.75 1.76 1.76 1.77 1.77 1.85 1.75
0.01 0.02 0.01 0.02 0.03 0.09 0.01
Date 1995-04-20
Origin Time 1247 29.42 +- 1.47
Zone 50
Easting 609.88 +- 5.97 Longitude 118.180
Northing 6314.88 +- 7.45 Latitude -33.299
Depth 5.00 +- 10.88 N
Arrival times = 16 S.D. = 0.728 Seismographs = 8
Nearest recorder = 97.5 km Gap = 141.0 deg Accuracy = B
Effects Code = Imax = 0 Fault =
47 km NW (300 deg) of PIN
WESTERN AUSTRALIA
265 km SE (125 deg) of PERTH
191 km N ( 9 deg) of ALBANY
35 km SW (231 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 2.4
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i-P 45.00 0.10 1.26 45.35 -0.35 97.5 294 3.1 3.1
NWAO e S 57.00 0.10 0.80 56.40 0.60 97.5 294 3.1 3.1
RKG e P 57.10 0.10 0.84 57.01 0.09 177.6 217 -42.2 42.2
RKG e S 77.30 0.30 0.61 77.64 -0.34 177.6 217 -40.3 40.3
KLB e P 59.10 0.20 0.72 58.92 0.18 193.4 348 -42.2 42.2
KLB e S 81.30 0.30 0.60 80.97 0.33 193.4 348 -40.3 40.3
MUN e P 65.00 0.30 0.66 64.06 0.94 235.9 307 -42.2 42.2
MUN e S 91.00 0.30 0.59 89.91 1.09 235.9 307 -40.3 40.3
MUN e SG 93.70 0.30 0.59 94.61 -0.91 235.9 307 1.3 1.3
WOOL e P 85.70 0.50 0.56 85.39 0.31 412.2 53 -42.2 42.2
WOOL e S 126.50 0.50 0.51 127.05 -0.55 412.2 53 -40.3 40.3
MRWA e PG 109.00 0.30 0.61 110.64 -1.64 497.8 334 0.6 0.6
MRWA e S 146.00 0.50 0.50 145.06 0.94 497.8 334 -40.3 40.3
MEEK e S 195.30 0.50 0.48 195.98 -0.68 739.5 3 -40.3 40.3
FORT e P 153.60 0.50 0.51 153.72 -0.12 977.5 76 -42.2 42.2
FORT e S 247.10 0.50 0.46 246.01 1.09 977.5 76 -40.3 40.3
16 times used, S = 0.728
Deferred Data
BAL e SG 118.00 1.00 0.45 120.41 -2.41 329.4 334 0.9 0.9
WOOL e S2 139.40 1.00 0.24 137.25 2.15 412.2 53 -23.9 23.9
WOOL e SG 140.10 1.00 0.44 143.31 -3.21 412.2 53 0.7 0.7
MRWA e SG 164.00 0.50 0.50 166.95 -2.95 497.8 334 0.6 0.6
MEEK e P 126.60 2.00 0.40 124.98 1.62 739.5 3 -42.2 42.2
FORT e SG 293.40 1.00 0.40 299.44 -6.04 977.5 76 0.3 0.3
Velocity Ratios
NWAO RKG KLB MUN WOOL FORT
NWAO 1.77 1.68 1.72 1.70 1.71 1.75
0.02 0.06 0.07 0.06 0.04 0.02
RKG 1.68 1.73 0.00 1.73 1.72 1.76
0.06 0.02 0.00 0.17 0.07 0.02
KLB 1.72 0.00 1.75 0.00 1.70 1.75
0.07 0.00 0.02 0.00 0.08 0.02
MUN 1.70 1.73 0.00 1.73 1.71 1.76
0.06 0.17 0.00 0.02 0.11 0.03
WOOL 1.71 1.72 1.70 1.71 1.72 1.78
0.04 0.07 0.08 0.11 0.02 0.04
FORT 1.75 1.76 1.75 1.76 1.78 1.75
0.02 0.02 0.02 0.03 0.04 0.01
Date 1995-04-20
Origin Time 1252 41.05 +- 10.21
Zone 50
Easting 612.07 +- 51.36 Longitude 118.204
Northing 6315.14 +- 17.80 Latitude -33.297
Depth 5.00 +- 39.63 N
Arrival times = 6 S.D. = 0.440 Seismographs = 4
Nearest recorder = 99.4 km Gap = 230.0 deg Accuracy = C
Effects Code = Imax = 0 Fault =
45 km NW (302 deg) of PIN
WESTERN AUSTRALIA
267 km SE (125 deg) of PERTH
191 km N ( 9 deg) of ALBANY
33 km SW (229 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 1.9
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 56.70 0.20 0.77 57.29 -0.59 99.4 294 3.0 3.0
NWAO e S 68.80 0.30 0.64 68.55 0.25 99.4 294 3.0 3.0
RKG e P 68.70 0.30 0.67 68.83 -0.13 179.1 217 -42.2 42.2
RKG e S 90.00 0.30 0.61 89.60 0.40 179.1 217 -40.3 40.3
KLB e S 93.00 0.30 0.60 92.64 0.36 193.6 347 -40.3 40.3
MUN e S2 105.00 0.30 0.33 104.74 0.26 237.5 307 -23.9 23.9
6 times used, S = 0.440
Deferred Data
MUN e S 105.00 0.30 0.59 101.87 3.13 237.5 307 -40.3 40.3
Velocity Ratios
NWAO RKG
NWAO 1.77 1.77
0.04 0.13
RKG 1.77 1.77
0.13 0.03
Date 1995-04-20
Origin Time 1311 30.09 +- 1.09
Zone 50
Easting 610.22 +- 3.93 Longitude 118.184
Northing 6316.85 +- 5.93 Latitude -33.282
Depth 1.81 +- 8.75
Arrival times = 22 S.D. = 0.602 Seismographs = 10
Nearest recorder = 97.0 km Gap = 140.6 deg Accuracy = B
Effects Code = Imax = 0 Fault =
47 km NW (302 deg) of PIN
WESTERN AUSTRALIA
264 km SE (125 deg) of PERTH
193 km N ( 9 deg) of ALBANY
33 km SW (233 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 3.3
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i-P 45.80 0.10 1.26 45.92 -0.12 97.0 293 1.2 1.2
NWAO e S 57.30 0.10 0.80 56.89 0.41 97.0 293 1.2 1.2
RKG e P 58.00 0.10 0.84 58.24 -0.24 179.3 216 -42.2 42.2
RKG e S 79.00 0.20 0.66 79.25 -0.25 179.3 216 -40.3 40.3
KLB e P 60.10 0.10 0.83 59.72 0.38 191.5 347 -42.2 42.2
KLB e S 81.40 0.30 0.60 81.82 -0.42 191.5 347 -40.3 40.3
MUN e P 66.00 0.10 0.82 64.96 1.04 235.0 307 -42.2 42.2
MUN e S 90.60 0.30 0.59 90.95 -0.35 235.0 307 -40.3 40.3
MUN e S2 93.00 0.50 0.30 93.50 -0.50 235.0 307 -23.9 23.9
BAL w P 76.00 2.00 0.44 76.18 -0.18 327.7 334 -42.2 42.2
BAL e PG 82.70 0.30 0.64 83.55 -0.85 327.7 334 0.4 0.4
BAL e S 110.00 0.30 0.57 110.49 -0.49 327.7 334 -40.3 40.3
WOOL e P 86.10 0.20 0.68 86.24 -0.14 410.8 54 -42.2 42.2
WOOL e S 128.40 0.30 0.56 127.99 0.41 410.8 54 -40.3 40.3
MRWA e P 96.90 0.10 0.76 96.56 0.34 496.2 334 -42.2 42.2
MRWA e S 146.00 0.50 0.50 145.96 0.04 496.2 334 -40.3 40.3
MEEK e P 126.90 0.50 0.53 125.76 1.14 737.5 3 -42.2 42.2
MEEK e S 195.50 0.50 0.48 196.80 -1.30 737.5 3 -40.3 40.3
FORT e P 153.80 0.30 0.57 154.64 -0.84 976.7 76 -42.2 42.2
FORT e S 248.20 0.30 0.51 247.09 1.11 976.7 76 -40.3 40.3
WARB e P 173.70 0.30 0.56 174.28 -0.58 1138.8 48 -42.2 42.2
WARB e S 281.30 0.50 0.46 281.28 0.02 1138.8 48 -40.3 40.3
22 times used, S = 0.602
Deferred Data
BAL e SG 118.50 0.30 0.57 120.62 -2.12 327.7 334 0.4 0.4
BAL e S2 118.50 0.30 0.32 116.93 1.57 327.7 334 -23.9 23.9
Velocity Ratios
NWAO RKG KLB MUN BAL WOOL MRWA MEEK FORT WARB
NWAO 1.73 1.78 1.69 1.65 1.75 1.76 1.74 1.70 1.77 1.75
0.02 0.05 0.05 0.04 0.14 0.02 0.02 0.02 0.01 0.01
RKG 1.78 1.75 0.00 1.45 0.00 1.76 1.72 1.69 1.77 1.75
0.05 0.01 0.00 0.10 0.00 0.04 0.03 0.03 0.01 0.01
KLB 1.69 0.00 1.71 1.56 0.00 1.81 1.76 1.71 1.78 1.76
0.05 0.00 0.02 0.16 0.00 0.04 0.03 0.03 0.01 0.01
MUN 1.65 1.45 1.56 1.69 0.00 1.88 1.79 1.72 1.79 1.77
0.04 0.10 0.16 0.01 0.00 0.06 0.04 0.03 0.02 0.01
BAL 1.75 0.00 0.00 0.00 1.74 0.00 0.00 1.68 1.78 1.75
0.14 0.00 0.00 0.00 0.09 0.00 0.00 0.10 0.06 0.05
WOOL 1.76 1.76 1.81 1.88 0.00 1.76 1.63 1.64 1.77 1.75
0.02 0.04 0.04 0.06 0.00 0.01 0.12 0.05 0.02 0.02
MRWA 1.74 1.72 1.76 1.79 0.00 1.63 1.73 1.65 1.80 1.76
0.02 0.03 0.03 0.04 0.00 0.12 0.01 0.07 0.03 0.02
MEEK 1.70 1.69 1.71 1.72 1.68 1.64 1.65 1.71 1.96 1.83
0.02 0.03 0.03 0.03 0.10 0.05 0.07 0.01 0.09 0.05
FORT 1.77 1.77 1.78 1.79 1.78 1.77 1.80 1.96 1.76 1.66
0.01 0.01 0.01 0.02 0.06 0.02 0.03 0.09 0.01 0.09
WARB 1.75 1.75 1.76 1.77 1.75 1.75 1.76 1.83 1.66 1.75
0.01 0.01 0.01 0.01 0.05 0.02 0.02 0.05 0.09 0.01
Date 1995-04-20
Origin Time 1316 53.79 +- 0.96
Zone 50
Easting 610.47 +- 3.82 Longitude 118.187
Northing 6314.29 +- 3.46 Latitude -33.305
Depth 1.77 +- 8.46
Arrival times = 22 S.D. = 0.560 Seismographs = 10
Nearest recorder = 98.3 km Gap = 141.3 deg Accuracy = B
Effects Code = Imax = 0 Fault =
46 km NW (300 deg) of PIN
WESTERN AUSTRALIA
266 km SE (125 deg) of PERTH
190 km N ( 9 deg) of ALBANY
35 km SW (229 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 3.1
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO i-P 69.60 0.10 1.26 69.84 -0.24 98.3 295 1.2 1.2
NWAO e S 81.70 0.10 0.80 80.96 0.74 98.3 295 1.2 1.2
RKG i-P 81.70 0.10 1.20 81.70 -0.00 177.5 217 -30.8 30.8
RKG e S 102.00 0.50 0.55 102.57 -0.57 177.5 217 -40.3 40.3
RKG e SG 103.00 0.50 0.55 102.82 0.18 177.5 217 0.7 0.7
KLB e P 83.50 0.50 0.60 83.74 -0.24 194.1 348 -42.2 42.2
KLB e S 106.00 0.30 0.60 106.07 -0.07 194.1 348 -40.3 40.3
KLB e S2 107.00 0.30 0.33 106.90 0.10 194.1 348 -23.9 23.9
MUN e P 90.00 0.50 0.59 88.89 1.11 236.7 307 -42.2 42.2
MUN e S 115.00 0.50 0.53 115.04 -0.04 236.7 307 -40.3 40.3
BAL e S 134.00 1.00 0.45 134.71 -0.71 330.1 334 -40.3 40.3
BAL e S2 142.00 1.00 0.25 141.25 0.75 330.1 334 -23.9 23.9
WOOL e P 109.80 0.30 0.62 110.10 -0.30 412.1 53 -42.2 42.2
WOOL e S 152.30 0.50 0.51 151.97 0.33 412.1 53 -40.3 40.3
MRWA e P 121.00 1.00 0.48 120.56 0.44 498.6 334 -42.2 42.2
MRWA e S 169.30 0.50 0.50 170.18 -0.88 498.6 334 -40.3 40.3
MRWA e SG 190.50 0.50 0.50 191.53 -1.03 498.6 334 0.2 0.2
MEEK e P 150.50 0.50 0.53 149.78 0.72 740.0 3 -42.2 42.2
FORT e P 177.80 0.30 0.57 178.39 -0.59 977.0 75 -42.2 42.2
FORT e S 271.60 0.50 0.46 270.87 0.73 977.0 75 -40.3 40.3
WARB e P 197.90 0.30 0.56 198.17 -0.27 1140.3 48 -42.2 42.2
WARB e S 306.20 0.50 0.46 305.31 0.89 1140.3 48 -40.3 40.3
22 times used, S = 0.560
Deferred Data
WOOL e SG 164.60 1.00 0.44 167.63 -3.03 412.1 53 0.3 0.3
MEEK e S 219.50 1.00 0.42 221.05 -1.55 740.0 3 -40.3 40.3
Velocity Ratios
NWAO RKG KLB MUN WOOL MRWA FORT WARB
NWAO 1.77 1.68 1.75 1.63 1.76 1.70 1.76 1.75
0.02 0.08 0.11 0.08 0.03 0.05 0.01 0.01
RKG 1.68 1.73 0.00 0.00 1.79 1.71 1.76 1.76
0.08 0.02 0.00 0.00 0.06 0.08 0.02 0.01
KLB 1.75 0.00 1.76 0.00 1.76 1.69 1.76 1.75
0.11 0.00 0.04 0.00 0.09 0.09 0.02 0.02
MUN 1.63 0.00 0.00 1.69 1.88 1.75 1.78 1.77
0.08 0.00 0.00 0.04 0.13 0.12 0.03 0.02
WOOL 1.76 1.79 1.76 1.88 1.76 0.00 1.75 1.75
0.03 0.06 0.09 0.13 0.02 0.00 0.03 0.02
MRWA 1.70 1.71 1.69 1.75 0.00 1.72 1.80 1.78
0.05 0.08 0.09 0.12 0.00 0.03 0.06 0.04
FORT 1.76 1.76 1.76 1.78 1.75 1.80 1.76 1.72
0.01 0.02 0.02 0.03 0.03 0.06 0.01 0.10
WARB 1.75 1.76 1.75 1.77 1.75 1.78 1.72 1.75
0.01 0.01 0.02 0.02 0.02 0.04 0.10 0.01
Date 1995-04-21
Origin Time 0004 24.80 +- 13.20
Zone 50
Easting 611.56 +- 69.86 Longitude 118.200
Northing 6303.63 +- 26.46 Latitude -33.401
Depth 5.00 +- 49.27 N
Arrival times = 6 S.D. = 0.351 Seismographs = 4
Nearest recorder = 104.3 km Gap = 231.5 deg Accuracy = C
Effects Code = Imax = 0 Fault =
40 km W (288 deg) of PIN
WESTERN AUSTRALIA
273 km SE (127 deg) of PERTH
180 km N ( 10 deg) of ALBANY
42 km SW (217 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 2.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 41.60 0.20 0.77 41.84 -0.24 104.3 300 2.9 2.9
NWAO e S 53.80 0.30 0.64 53.66 0.14 104.3 300 2.9 2.9
RKG e P 51.00 1.00 0.53 51.39 -0.39 169.9 219 -30.8 30.8
RKG e S 72.00 1.00 0.48 71.41 0.59 169.9 219 -40.3 40.3
KLB e S 79.00 0.30 0.60 78.75 0.25 204.8 348 -40.3 40.3
MUN e S2 90.00 0.20 0.35 90.23 -0.23 244.4 309 -23.9 23.9
6 times used, S = 0.351
Velocity Ratios
NWAO RKG
NWAO 1.73 0.00
0.04 0.00
RKG 0.00 1.80
0.00 0.11
Date 1995-04-23
Origin Time 0729 13.32 +- 24.01
Zone 50
Easting 606.04 +- 96.56 Longitude 118.139
Northing 6316.15 +- 41.44 Latitude -33.288
Depth 5.00 +- 99.53 N
Arrival times = 6 S.D. = 0.945 Seismographs = 4
Nearest recorder = 93.5 km Gap = 226.6 deg Accuracy = C
Effects Code = Imax = 0 Fault =
50 km NW (299 deg) of PIN
WESTERN AUSTRALIA
261 km SE (125 deg) of PERTH
191 km N ( 8 deg) of ALBANY
37 km SW (236 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 2.4
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e S 39.30 0.30 0.64 39.19 0.11 93.5 295 3.2 3.2
RKG e P 40.00 0.50 0.61 40.75 -0.75 176.3 215 -42.2 42.2
RKG e S 61.30 0.30 0.61 61.26 0.04 176.3 215 -40.3 40.3
KLB e S 64.00 0.20 0.65 64.46 -0.46 191.4 349 -40.3 40.3
MUN e P 49.00 0.20 0.71 47.50 1.50 232.1 308 -42.2 42.2
MUN e S 72.00 0.30 0.59 73.01 -1.01 232.1 308 -40.3 40.3
6 times used, S = 0.945
Deferred Data
NWAO e P 26.00 0.30 0.71 28.60 -2.60 93.5 295 3.2 3.2
KLB e P 37.50 1.00 0.53 42.58 -5.08 191.4 349 -42.2 42.2
Velocity Ratios
RKG MUN
RKG 1.80 1.19
0.05 0.17
MUN 1.19 1.64
0.17 0.02
Date 1995-04-23
Origin Time 1138 34.01 +- 6.99
Zone 50
Easting 608.46 +- 37.67 Longitude 118.164
Northing 6319.20 +- 13.30 Latitude -33.261
Depth 5.00 +- 32.25 N
Arrival times = 9 S.D. = 0.878 Seismographs = 4
Nearest recorder = 94.5 km Gap = 227.5 deg Accuracy = C
Effects Code = Imax = 0 Fault =
50 km NW (304 deg) of PIN
WESTERN AUSTRALIA
261 km SE (124 deg) of PERTH
195 km N ( 8 deg) of ALBANY
34 km SW (238 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 2.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 48.80 0.50 0.64 49.44 -0.64 94.5 292 3.2 3.2
NWAO e S 59.70 0.50 0.58 60.14 -0.44 94.5 292 3.2 3.2
RKG e P 61.00 0.50 0.61 61.91 -0.91 180.1 215 -42.2 42.2
RKG e S 83.00 0.50 0.55 82.77 0.23 180.1 215 -40.3 40.3
RKG e SG 84.60 0.30 0.61 83.79 0.81 180.1 215 1.7 1.7
KLB e P 62.20 0.50 0.60 62.97 -0.77 188.9 348 -42.2 42.2
KLB e S 86.00 0.50 0.54 84.61 1.39 188.9 348 -40.3 40.3
MUN e P 69.00 2.00 0.45 68.19 0.81 232.1 307 -42.2 42.2
MUN e S2 97.40 0.50 0.30 96.35 1.05 232.1 307 -23.9 23.9
9 times used, S = 0.878
Deferred Data
MUN e SG 97.40 0.30 0.59 98.15 -0.75 232.1 307 1.3 1.3
Velocity Ratios
NWAO RKG KLB
NWAO 1.74 0.00 0.00
0.10 0.00 0.00
RKG 0.00 1.82 0.00
0.00 0.05 0.00
KLB 0.00 0.00 1.84
0.00 0.00 0.05
Date 1995-04-23
Origin Time 1538 31.67 +- 0.00
Zone 50
Easting 611.92 +- 0.00 Longitude 118.204
Northing 6301.96 +- 0.00 Latitude -33.416
Depth 5.00 +- 0.00 N
Arrival times = 4 S.D. = 0.069 Seismographs = 3
Nearest recorder = 105.5 km Gap = 312.5 deg Accuracy = D
Effects Code = Imax = 0 Fault =
39 km W (286 deg) of PIN
WESTERN AUSTRALIA
274 km SE (127 deg) of PERTH
178 km N ( 10 deg) of ALBANY
43 km SW (215 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 -10.0
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e P 48.90 0.30 0.70 48.90 -0.00 105.5 300 2.9 2.9
NWAO e S 60.90 0.30 0.63 60.85 0.05 105.5 300 2.9 2.9
KLB e S 86.00 0.50 0.54 85.98 0.02 206.5 348 -40.3 40.3
MUN e S2 97.30 0.10 0.41 97.45 -0.15 245.7 310 -23.9 23.9
4 times used, S = 0.069
Deferred Data
MUN e S 97.30 0.30 0.59 94.23 3.07 245.7 310 -40.3 40.3
Velocity Ratios
NWAO
NWAO 1.70
0.05
Date 1995-04-23
Origin Time 1539 17.27 +- 58.73
Zone 50
Easting 608.23 +- 270.29 Longitude 118.162
Northing 6318.48 +- 67.76 Latitude -33.267
Depth 5.00 +- 212.48 N
Arrival times = 5 S.D. = 0.216 Seismographs = 4
Nearest recorder = 94.5 km Gap = 227.5 deg Accuracy = C
Effects Code = Imax = 0 Fault =
50 km NW (303 deg) of PIN
WESTERN AUSTRALIA
262 km SE (125 deg) of PERTH
194 km N ( 8 deg) of ALBANY
34 km SW (237 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 1.8
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
NWAO e S 43.30 0.30 0.64 43.42 -0.12 94.5 293 3.2 3.2
RKG e S 65.70 0.50 0.55 65.88 -0.18 179.4 215 -40.3 40.3
RKG e SG 67.00 0.30 0.61 66.86 0.14 179.4 215 1.7 1.7
KLB e S 68.00 0.50 0.54 68.01 -0.01 189.5 348 -40.3 40.3
MUN e S2 80.20 0.30 0.33 79.68 0.52 232.4 307 -23.9 23.9
5 times used, S = 0.216
Deferred Data
NWAO e P 31.30 0.30 0.71 32.72 -1.42 94.5 293 3.2 3.2
NO VELOCITY RATIOS
Date 1995-04-29
Origin Time 0712 2.95 +- 3.30
Zone 51
Easting 711.35 +- 10.22 Longitude 125.356
Northing 5970.95 +- 23.28 Latitude -36.383
Depth 5.00 +- 38.83 N
Arrival times = 20 S.D. = 1.126 Seismographs = 11
Nearest recorder = 669.0 km Gap = 218.3 deg Accuracy = D
Effects Code = Imax = 0 Fault =
575 km SE (124 deg) of RAVT
Place names undefined for this area
Record Dur Sync Unc Resp Seismometer Recorder Pol
ASPA 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 i-P 90.70 0.10 1.05 89.94 0.76 669.0 22 -42.2 42.2
FORT e P2 101.10 0.30 0.36 99.41 1.69 669.0 22 -30.8 30.8
FORT e S 154.60 1.00 0.42 154.59 0.01 669.0 22 -40.3 40.3
WOOL i P 92.20 0.20 0.92 91.32 0.88 680.2 329 -42.2 42.2
RKG e P 104.00 0.20 0.63 103.85 0.15 783.8 282 -42.2 42.2
RKG e S 176.40 0.30 0.52 178.80 -2.40 783.8 282 -40.3 40.3
NWAO e P 111.30 0.20 0.63 110.34 0.96 837.6 294 -42.2 42.2
NWAO e S 190.35 0.50 0.47 190.11 0.24 837.6 294 -40.3 40.3
KLB i P 117.30 0.10 1.03 115.50 1.80 880.2 305 -42.2 42.2
KLB e S 197.50 0.50 0.47 199.09 -1.59 880.2 305 -40.3 40.3
MUN i P 127.00 0.10 1.01 126.95 0.05 974.9 297 -42.2 42.2
MUN e S 217.00 0.50 0.46 219.02 -2.02 974.9 297 -40.3 40.3
BAL i P 133.00 0.10 1.01 133.36 -0.36 1027.9 306 -42.2 42.2
BAL e S 228.40 0.50 0.46 230.18 -1.78 1027.9 306 -40.3 40.3
WARB e P 146.90 0.30 0.56 146.72 0.18 1138.2 6 -42.2 42.2
WARB i S 253.60 0.30 0.72 253.43 0.17 1138.2 6 -40.3 40.3
MRWA i P 152.30 0.10 1.00 152.16 0.14 1183.4 309 -42.2 42.2
WRG i-P 155.20 0.30 0.80 156.19 -0.99 1216.8 64 -42.2 42.2
WRG e S 267.70 0.50 0.46 269.94 -2.24 1216.8 64 -40.3 40.3
MEEK i P 160.00 0.10 1.00 160.90 -0.90 1255.4 327 -42.2 42.2
20 times used, S = 1.126
Deferred Data
WOOL e S 153.90 0.50 0.48 156.99 -3.09 680.2 329 -40.3 40.3
MRWA e S 259.50 0.50 0.46 262.92 -3.42 1183.4 309 -40.3 40.3
MEEK e S 274.30 0.10 0.63 278.13 -3.83 1255.4 327 -40.3 40.3
ASPA i P 206.40 0.10 1.00 207.30 -0.90 1639.1 32 -42.2 42.2
ASPA e S 354.30 0.10 0.63 358.92 -4.62 1639.1 32 -40.3 40.3
WR2 i P 251.30 0.10 1.00 255.30 -4.00 2035.8 28 -42.2 42.2
WR2 e S 437.70 0.10 0.63 442.63 -4.93 2035.8 28 -40.4 40.4
FITX i P 251.10 0.10 1.00 254.04 -2.94 2025.9 0 -42.2 42.2
QIS e P 280.50 0.10 0.70 281.59 -1.09 2248.8 42 -50.4 50.0
QIS e S 486.80 0.10 0.63 496.52 -9.72 2248.8 42 -45.1 46.6
Velocity Ratios
FORT RKG NWAO KLB MUN BAL WARB WRG
FORT 1.73 1.64 1.74 1.61 1.72 1.74 1.76 1.75
0.01 0.14 0.10 0.07 0.05 0.04 0.04 0.03
RKG 1.64 1.72 0.00 1.59 1.77 1.79 1.80 1.78
0.14 0.01 0.00 0.10 0.06 0.05 0.04 0.03
NWAO 1.74 0.00 1.73 0.00 1.70 1.75 1.78 1.76
0.10 0.00 0.01 0.00 0.10 0.07 0.05 0.04
KLB 1.61 1.59 0.00 1.70 2.01 1.97 1.90 1.85
0.07 0.10 0.00 0.01 0.15 0.09 0.05 0.05
MUN 1.72 1.77 1.70 2.01 1.73 0.00 1.84 1.80
0.05 0.06 0.10 0.15 0.01 0.00 0.08 0.06
BAL 1.74 1.79 1.75 1.97 0.00 1.73 1.81 1.77
0.04 0.05 0.07 0.09 0.00 0.01 0.11 0.08
WARB 1.76 1.80 1.78 1.90 1.84 1.81 1.74 0.00
0.04 0.04 0.05 0.05 0.08 0.11 0.01 0.00
WRG 1.75 1.78 1.76 1.85 1.80 1.77 0.00 1.74
0.03 0.03 0.04 0.05 0.06 0.08 0.00 0.01