Data Report
Bulletin / 2023-03
Contributed by CUPWA
Date 2023-03-03
Origin Time 1441 29.21 +- 3.25
Zone 50
Easting 573.18 +- 13.91 Longitude 117.762
Northing 6634.17 +- 19.73 Latitude -30.422
Depth 2.49 +- 129.92
Arrival times = 7 S.D. = 0.105 Seismographs = 5
Nearest recorder = 9.6 km Gap = 127.9 deg Accuracy = C
Effects Code = Imax = 0 Fault =
1 km E (100 deg) of BEAW
WESTERN AUSTRALIA
249 km NE ( 48 deg) of PERTH
11 km W (287 deg) of Beacon
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
BCON P 30.73 0.10 1.50 30.83 -0.10 9.6 1 16.3 16.3
BCON S 32.21 1.00 0.85 31.96 0.25 9.6 1 16.3 16.3
WATG P 38.00 0.10 1.33 38.05 -0.05 54.2 129 2.7 2.7
WATG S 44.30 1.00 0.75 44.19 0.11 54.2 129 2.7 2.7
KORD P 38.40 0.10 1.32 38.38 0.02 56.2 206 2.6 2.6
BLDU P 46.05 0.20 1.09 46.05 0.00 103.2 257 1.6 1.6
KLBR P 50.40 0.20 1.07 50.36 0.04 129.6 180 1.2 1.2
7 times used, S = 0.105
Deferred Data
BLDU S 58.00 1.00 0.71 57.72 0.28 103.2 257 1.6 1.6
KLBR S 65.20 1.00 0.70 65.02 0.18 129.6 180 1.2 1.2
MORW P 62.80 0.30 0.94 62.71 0.09 224.2 311 -42.2 42.2
Velocity Ratios
BCON WATG
BCON 1.97 0.00
0.84 0.00
WATG 0.00 1.72
0.00 0.13
Date 2023-03-03
Origin Time 1442 8.15 +- 1.80
Zone 50
Easting 572.92 +- 12.79 Longitude 117.759
Northing 6633.57 +- 11.07 Latitude -30.428
Depth 1.00 +- 165.40 C
Arrival times = 7 S.D. = 0.057 Seismographs = 5
Nearest recorder = 10.2 km Gap = 125.9 deg Accuracy = B
Effects Code = Imax = 0 Fault =
1 km SE (130 deg) of BEAW
WESTERN AUSTRALIA
248 km NE ( 48 deg) of PERTH
11 km W (283 deg) of Beacon
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.9
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
BCON P 9.82 0.10 1.50 9.82 0.00 10.2 3 7.3 7.3
BCON S 10.96 1.00 0.85 10.98 -0.02 10.2 3 7.3 7.3
WATG P 16.94 0.10 1.33 16.95 -0.01 54.0 128 1.2 1.2
WATG S 23.10 1.00 0.75 23.06 0.04 54.0 128 1.2 1.2
KORD P 17.12 0.10 1.32 17.21 -0.09 55.5 206 1.1 1.1
BLDU P 24.97 0.10 1.26 24.92 0.05 102.8 258 0.7 0.7
KLBR P 29.27 0.20 1.07 29.19 0.08 129.0 180 0.6 0.6
7 times used, S = 0.057
Deferred Data
MORW P 40.90 0.20 1.02 41.84 -0.94 224.4 311 -42.2 42.2
ONGR P 61.90 0.30 0.80 61.33 0.57 385.6 171 -42.2 42.2
Velocity Ratios
BCON WATG
BCON 1.68 0.00
0.74 0.00
WATG 0.00 1.70
0.00 0.13
Date 2023-03-10
Origin Time 1855 9.25 +- 0.80
Zone 50
Easting 497.24 +- 6.61 Longitude 116.970
Northing 6306.41 +- 11.61 Latitude -33.381
Depth 2.06 +- 1.52
Arrival times = 7 S.D. = 0.019 Seismographs = 5
Nearest recorder = 0.8 km Gap = 199.0 deg Accuracy = A
Effects Code = Imax = 0 Fault =
0 km SE (112 deg) of ARV4
WESTERN AUSTRALIA
198 km NW (335 deg) of ALBANY
190 km SE (147 deg) of PERTH
7 km SW (238 deg) of Arthur River
Record Dur Sync Unc Resp Seismometer Recorder Pol
AJ02 0.00 Seismograph details unknown
AJ03 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 2.1
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
ARV4 i P 9.72 0.03 2.15 9.71 0.01 0.8 292 64.6 69.9
ARV4 i S 9.87 0.30 1.22 9.91 -0.04 0.8 292 67.8 69.9
AJ02 i P 10.31 0.03 1.99 10.32 -0.01 4.9 38 0.2 36.7
AJ02 i S 10.88 0.30 1.13 10.89 -0.01 4.9 38 1.3 23.7
DBYG P 21.23 0.10 1.30 21.23 0.00 71.1 93 -20.5 41.3
PINW P 25.73 0.10 1.26 25.71 0.02 100.0 1 -20.5 41.3
AKUL P 31.31 0.20 1.07 31.32 -0.01 135.7 54 -20.5 41.3
7 times used, S = 0.019
Deferred Data
AJ03 S-P 3.00 3.00 0.83 0.29 2.71 2.2 76 0.0 0.0
NWAO P 18.65 0.10 1.32 18.87 -0.22 56.1 25 -20.5 41.3
NWAO S 25.03 1.00 0.75 25.04 -0.01 56.1 25 0.0 24.2
AKUL S 47.10 1.00 0.70 46.29 0.81 135.7 54 -16.6 29.0
RKGY P 31.45 0.20 1.07 31.39 0.06 136.2 179 -20.5 41.3
RKGY S 47.30 1.00 0.70 46.41 0.89 136.2 179 -16.6 29.0
ONGR P 32.10 0.20 1.06 32.40 -0.30 142.6 112 -20.5 41.3
ONGR S 48.80 1.00 0.69 48.12 0.68 142.6 112 -16.6 29.0
COR2 P 34.93 0.10 1.21 35.33 -0.40 161.4 27 -20.5 41.3
MEKS P 39.13 0.10 1.19 38.67 0.46 186.3 1 -42.6 53.8
Velocity Ratios
ARV4 AJ02
ARV4 1.32 0.00
0.77 0.00
AJ02 0.00 1.54
0.00 0.34
1.70
0.00 0.46 0.19
NWAO 1.70 1.70 1.70
0.17 0.19 0.13
Date 2023-03-12
Origin Time 0749 10.75 +- 0.64
Zone 50
Easting 497.37 +- 13.38 Longitude 116.972
Northing 6305.98 +- 11.11 Latitude -33.385
Depth 1.47 +- 12.85
Arrival times = 7 S.D. = 0.030 Seismographs = 5
Nearest recorder = 1.1 km Gap = 131.6 deg Accuracy = A
Effects Code = Imax = 0 Fault =
1 km SE (131 deg) of ARV4
WESTERN AUSTRALIA
197 km NW (335 deg) of ALBANY
191 km SE (147 deg) of PERTH
7 km SW (234 deg) of Arthur River
Record Dur Sync Unc Resp Seismometer Recorder Pol
AHAR 0.00 Seismograph details unknown
AJ02 0.00 Seismograph details unknown
AJ03 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 2.1
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
ARV4 i P 11.06 0.03 2.13 11.05 0.01 1.1 311 53.3 53.3
ARV4 i S 11.22 0.30 1.21 11.26 -0.04 1.1 311 53.3 53.3
AJ02 i P 11.63 0.03 1.99 11.62 0.01 5.1 34 16.0 16.0
AJ02 i S 12.22 0.30 1.13 12.23 -0.01 5.1 34 16.0 16.0
NWAO P 20.00 0.10 1.32 19.96 0.04 56.4 25 1.8 1.8
RKGY P 32.85 0.20 1.07 32.84 0.01 135.7 179 -30.8 30.8
AKUL P 32.80 0.10 1.23 32.86 -0.06 135.8 54 -30.8 30.8
7 times used, S = 0.030
Deferred Data
AJ03 S-P 3.00 3.00 0.83 0.30 2.70 2.2 64 0.0 0.0
NWAO S 26.50 1.00 0.75 26.34 0.16 56.4 25 1.8 1.8
PINW P 27.20 0.20 1.02 27.14 0.06 100.4 1 0.9 0.9
AHAR S 42.00 1.00 0.71 39.97 2.03 105.8 287 0.8 0.8
RKGY S 48.60 1.00 0.70 48.25 0.35 135.7 179 0.7 0.7
AKUL S 48.20 1.00 0.70 48.27 -0.07 135.8 54 0.8 0.8
ONGR P 33.44 0.20 1.06 33.77 -0.33 142.3 112 -30.8 30.8
ONGR S 50.20 1.00 0.69 50.07 0.13 142.3 112 0.7 0.7
KORD P 51.80 0.30 0.92 51.40 0.40 282.5 10 -42.2 42.2
Velocity Ratios
ARV4 AJ02
ARV4 1.52 0.00
1.24 0.00
AJ02 0.00 1.67
0.00 0.41
Date 2023-03-20
Origin Time 1109 7.32 +- 16.07
Zone 50
Easting 499.96 +- 68.80 Longitude 117.000
Northing 6305.97 +- 98.59 Latitude -33.385
Depth 2.10 +- 62.10
Arrival times = 5 S.D. = 0.019 Seismographs = 3
Nearest recorder = 3.5 km Gap = 259.0 deg Accuracy = C
Effects Code = Imax = 0 Fault =
1 km SE (146 deg) of AJ03
WESTERN AUSTRALIA
196 km NW (336 deg) of ALBANY
192 km SE (146 deg) of PERTH
5 km SW (216 deg) of Arthur River
Record Dur Sync Unc Resp Seismometer Recorder Pol
AJ02 0.00 Seismograph details unknown
AJ03 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 2.1
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
ARV4 i P 8.17 0.03 2.03 8.17 0.00 3.5 282 3.6 36.6
ARV4 i S 8.51 0.30 1.15 8.52 -0.01 3.5 282 20.6 32.1
AJ02 i P 8.31 0.03 2.01 8.29 0.02 4.3 3 1.8 36.7
AJ02 i S 8.75 0.30 1.14 8.76 -0.01 4.3 3 12.2 26.9
NWAO P 16.80 0.10 1.32 16.83 -0.03 55.3 23 -20.5 41.3
5 times used, S = 0.019
Deferred Data
AJ03 S-P 3.00 3.00 0.84 0.23 2.77 1.1 326 0.0 0.0
NWAO S 23.20 1.00 0.75 22.91 0.29 55.3 23 0.1 24.2
AKUL P 28.90 0.10 1.23 29.08 -0.18 133.7 53 -20.5 41.3
AKUL S 45.20 1.00 0.70 43.84 1.36 133.7 53 -16.6 29.0
ONGR P 29.40 0.20 1.07 30.05 -0.65 139.9 112 -20.5 41.3
ONGR S 46.60 1.00 0.70 45.48 1.12 139.9 112 -16.6 29.0
MUN P 34.50 0.20 1.05 35.07 -0.57 172.7 334 -42.6 53.8
MUN S 54.00 1.00 0.68 54.16 -0.16 172.7 334 -16.6 29.0
KLBR P 40.15 0.10 1.18 39.80 0.35 211.1 19 -42.6 53.8
KLBR S 63.60 1.00 0.67 63.81 -0.21 211.1 19 -38.2 44.2
Velocity Ratios
ARV4 AJ02
ARV4 1.40 0.00
0.42 0.00
AJ02 0.00 1.45
0.00 0.36
Date 2023-03-30
Origin Time 2201 56.62 +- 1.06
Zone 50
Easting 469.39 +- 8.16 Longitude 116.676
Northing 6450.87 +- 10.36 Latitude -32.078
Depth 0.48 +- 27.74
Arrival times = 7 S.D. = 0.029 Seismographs = 6
Nearest recorder = 45.5 km Gap = 132.8 deg Accuracy = B
Effects Code = Imax = 0 Fault =
10 km SW (203 deg) of YK3
WESTERN AUSTRALIA
79 km E (101 deg) of PERTH
24 km W (281 deg) of Beverley
Record Dur Sync Unc Resp Seismometer Recorder Pol
MAGNITUDES
Code R ML MD MB MS MW MN
No magnitudes known Assign ML 2.1
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
MUN P 64.03 0.10 1.34 64.04 -0.02 45.5 283 0.9 0.9
MUN S 69.20 1.00 0.76 69.19 0.01 45.5 283 0.9 0.9
NWAO P 74.20 0.10 1.25 74.19 0.01 107.7 151 0.4 0.4
KLBR P 75.45 0.10 1.24 75.46 -0.01 115.5 62 0.4 0.4
BLDU P 82.60 0.20 1.05 82.55 0.05 162.5 1 -30.8 30.8
WATG P 88.30 0.20 1.03 88.34 -0.04 207.8 44 -42.2 42.2
BCON P 89.74 0.30 0.94 89.74 0.00 219.2 28 -42.2 42.2
7 times used, S = 0.029
Deferred Data
NWAO S 87.10 1.00 0.71 86.37 0.73 107.7 151 0.4 0.4
KLBR S 88.40 1.00 0.71 88.51 -0.11 115.5 62 0.4 0.4
BLDU S 101.10 1.00 0.69 101.51 -0.41 162.5 1 0.3 0.3
WATG S 113.00 1.00 0.67 111.98 1.02 207.8 44 -40.3 40.3
Velocity Ratios
MUN
MUN 1.70
0.16