Data Report
Bulletin / 2023-07
Contributed by CUPWA
Date 2023-07-04
Origin Time 0357 39.53 +- 5.22
Zone 50
Easting 497.36 +- 159.28 Longitude 116.972
Northing 6307.71 +- 71.98 Latitude -33.370
Depth 2.40 +- 43.26
Arrival times = 5 S.D. = 0.008 Seismographs = 4
Nearest recorder = 1.3 km Gap = 167.3 deg Accuracy = C
Effects Code = Imax = 0 Fault =
1 km NE ( 39 deg) of ARV4
WESTERN AUSTRALIA
199 km NE ( 58 deg) of AUGUSTA
189 km SE (147 deg) of PERTH
6 km W (248 deg) of Arthur River
Record Dur Sync Unc Resp Seismometer Recorder Pol
AJ02 0.00 Seismograph details unknown
ARV4 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
ARV4 i P 40.09 0.03 2.12 40.08 0.01 1.3 219 55.3 62.8
ARV4 i S 40.33 0.30 1.20 40.35 -0.01 1.3 219 59.1 62.1
AJ02 S-P 0.44 0.20 1.38 0.43 0.00 3.8 48 0.0 0.0
NWAO P 48.94 0.10 1.32 48.94 -0.00 54.9 26 -20.5 41.3
RKGY P 61.85 0.20 1.07 61.85 -0.00 137.5 179 -20.5 41.3
5 times used, S = 0.008
Deferred Data
AJ02 i P 43.24 2.00 0.87 40.45 2.79 3.8 48 14.9 38.5
NWAO S 54.90 1.00 0.75 54.99 -0.09 54.9 26 0.4 24.2
AKUL S 77.55 1.00 0.70 76.32 1.23 134.8 55 -16.6 29.0
RKGY S 77.40 1.00 0.70 77.01 0.39 137.5 179 -16.6 29.0
KLBR P 72.10 0.20 1.03 71.88 0.22 210.4 20 -42.6 53.8
Velocity Ratios
ARV4
ARV4 1.44
0.65
Date 2023-07-05
Origin Time 0051 32.61 +- 20.61
Zone 50
Easting 500.29 +- 366.24 Longitude 117.003
Northing 6308.72 +- 269.59 Latitude -33.361
Depth 3.65 +- 98.87
Arrival times = 5 S.D. = 0.114 Seismographs = 3
Nearest recorder = 1.5 km Gap = 217.6 deg Accuracy = C
Effects Code = Imax = 0 Fault =
1 km S (178 deg) of AJ02
WESTERN AUSTRALIA
199 km NW (336 deg) of ALBANY
190 km SE (146 deg) of PERTH
3 km SW (245 deg) of Arthur River
Record Dur Sync Unc Resp Seismometer Recorder Pol
AJ02 0.00 Seismograph details unknown
ARV4 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
AJ02 S-P 0.36 0.03 2.11 0.40 -0.04 1.5 358 0.0 0.0
ARV4 i P 33.69 0.03 2.01 33.66 0.03 4.3 241 33.5 48.1
ARV4 i S 34.20 0.30 1.14 34.24 -0.04 4.3 241 37.4 43.5
NWAO P 41.46 0.10 1.33 41.61 -0.15 52.7 24 -20.5 41.3
NWAO S 47.80 1.00 0.75 47.47 0.33 52.7 24 1.9 24.2
5 times used, S = 0.114
Deferred Data
AJ02 i P 36.48 0.10 1.62 33.36 3.12 1.5 358 64.6 69.9
RKGY P 55.43 0.10 1.22 55.01 0.42 138.5 180 -20.5 41.3
RKGY S 71.20 1.00 0.69 70.26 0.94 138.5 180 -16.6 29.0
MUN P 60.30 0.30 0.97 59.89 0.41 170.4 333 -42.6 53.8
KLBR P 65.05 0.20 1.03 64.57 0.48 208.4 19 -42.6 53.8
KLBR S 88.20 1.00 0.67 88.24 -0.04 208.4 19 -38.2 44.2
Velocity Ratios
ARV4 NWAO
ARV4 1.47 1.75
0.33 0.20
NWAO 1.75 1.72
0.20 0.13
Date 2023-07-23
Origin Time 1109 56.07 +- 1.19
Zone 50
Easting 496.94 +- 22.26 Longitude 116.967
Northing 6309.45 +- 17.47 Latitude -33.354
Depth 3.32 +- 10.62
Arrival times = 6 S.D. = 0.019 Seismographs = 4
Nearest recorder = 2.8 km Gap = 199.4 deg Accuracy = B
Effects Code = Imax = 0 Fault =
0 km NW (300 deg) of AJ01
WESTERN AUSTRALIA
199 km NE ( 58 deg) of AUGUSTA
188 km SE (146 deg) of PERTH
6 km W (266 deg) of Arthur River
Record Dur Sync Unc Resp Seismometer Recorder Pol
AHAR 0.00 Seismograph details unknown
AJ01 0.00 Seismograph details unknown
AJ02 0.00 Seismograph details unknown
ARV4 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
ARV4 i P 56.91 0.03 2.05 56.90 0.01 2.8 188 43.9 54.7
ARV4 i S 57.31 0.30 1.17 57.34 -0.03 2.8 188 47.5 51.9
AJ02 i P 56.99 0.03 2.03 56.98 0.02 3.4 76 36.9 50.1
AJ02 i S 57.44 0.30 1.15 57.46 -0.02 3.4 76 41.0 46.5
NWAO P 65.20 0.10 1.33 65.22 -0.02 53.5 27 -20.5 41.3
RKGY P 78.60 0.20 1.07 78.61 -0.01 139.2 179 -20.5 41.3
6 times used, S = 0.019
Deferred Data
AJ01 S-P 3.00 3.00 0.61 0.35 2.65 0.9 120 0.0 0.0
NWAO S 71.40 1.00 0.75 71.15 0.25 53.5 27 1.5 24.2
PINW P 72.40 0.20 1.03 71.98 0.42 97.0 1 -20.5 41.3
PINW S 83.90 1.00 0.57 82.72 1.18 97.0 1 -16.6 29.0
AHAR P 73.70 0.20 1.09 73.13 0.57 104.4 285 -20.5 41.3
AKUL P 78.30 0.20 1.07 77.83 0.47 134.2 55 -20.5 41.3
KLBR P 88.45 0.20 1.03 88.13 0.32 208.9 20 -42.6 53.8
Velocity Ratios
ARV4 AJ02
ARV4 1.48 0.00
0.42 0.00
AJ02 0.00 1.48
0.00 0.38
Date 2023-07-27
Origin Time 2137 59.13 +- 3.69
Zone 50
Easting 608.44 +- 19.58 Longitude 118.172
Northing 6255.88 +- 11.50 Latitude -33.832
Depth 7.91 +- 40.94
Arrival times = 7 S.D. = 0.177 Seismographs = 5
Nearest recorder = 122.9 km Gap = 191.4 deg Accuracy = C
Effects Code = Imax = 0 Fault =
2 km N (355 deg) of GNOC
WESTERN AUSTRALIA
301 km SE (134 deg) of PERTH
133 km N ( 12 deg) of ALBANY
19 km NE ( 56 deg) of Gnowangerup
Record Dur Sync Unc Resp Seismometer Recorder Pol
AALB 0.00 Seismograph details unknown
ARV4 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
ARV4 P 78.83 0.20 1.08 78.86 -0.03 122.9 293 -30.8 30.8
ARV4 S 93.50 1.00 0.70 93.16 0.34 122.9 293 3.7 3.7
AKUL P 79.80 0.10 1.23 79.72 0.08 128.8 359 -30.8 30.8
AKUL S 95.00 1.00 0.70 94.79 0.21 128.8 359 3.7 3.7
AALB P 80.16 0.10 1.23 80.11 0.05 131.8 190 -30.8 30.8
NWAO P 80.20 0.20 1.07 80.30 -0.10 133.0 318 -30.8 30.8
PINW PG 89.13 0.20 1.04 89.41 -0.28 185.4 323 2.5 2.5
7 times used, S = 0.177
Deferred Data
AALB S 93.90 1.00 0.70 95.62 -1.72 131.8 190 3.4 3.4
NWAO S 96.60 1.00 0.70 95.95 0.65 133.0 318 3.5 3.5
RKGY P 80.72 0.20 1.07 81.26 -0.54 139.8 231 -30.8 30.8
RKGY S 97.10 1.00 0.70 97.82 -0.72 139.8 231 3.4 3.4
PINW P 89.13 0.20 1.04 87.34 1.79 185.4 323 -42.2 42.2
PINW S 111.10 1.00 0.68 108.45 2.65 185.4 323 -40.3 40.3
COR2 PG 90.60 0.30 0.85 91.38 -0.78 197.5 348 2.4 2.4
COR2 SG 113.30 1.00 0.54 113.73 -0.43 197.5 348 2.4 2.4
KLBR P 96.60 0.20 1.01 95.34 1.26 251.4 350 -42.2 42.2
Velocity Ratios
ARV4 AKUL
ARV4 1.74 0.00
0.07 0.00
AKUL 0.00 1.74
0.00 0.06