Data Report
Bulletin / 2023-05
Contributed by CUPWA
Date 2023-05-05
Origin Time 0912 58.03 +- 0.77
Zone 50
Easting 500.76 +- 3.19 Longitude 117.008
Northing 6493.45 +- 6.08 Latitude -31.694
Depth 3.54 +- 4.97
Arrival times = 11 S.D. = 0.101 Seismographs = 7
Nearest recorder = 3.0 km Gap = 193.9 deg Accuracy = B
Effects Code = Imax = 0 Fault =
3 km W (286 deg) of MEKS
WESTERN AUSTRALIA
113 km E ( 76 deg) of PERTH
7 km S (182 deg) of Meckering
Record Dur Sync Unc Resp Seismometer Recorder Pol
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
MEKS i P 58.85 0.10 1.61 58.81 0.04 3.0 106 51.5 51.5
MEKS i S 59.22 0.50 1.05 59.36 -0.14 3.0 106 51.5 51.5
KLBR P 69.80 0.10 1.30 69.74 0.06 71.7 81 3.1 3.1
KLBR S 78.05 1.00 0.74 77.86 0.19 71.7 81 3.1 3.1
MUN P 71.35 0.10 1.28 71.41 -0.06 82.0 247 2.7 2.7
COR2 P 71.55 0.10 1.28 71.57 -0.02 82.9 121 2.7 2.7
COR2 S 80.72 1.00 0.73 80.95 -0.23 82.9 121 2.7 2.7
PINW P 72.38 0.10 1.28 72.25 0.13 87.1 180 2.4 2.4
PINW S 82.17 0.10 1.15 82.11 0.06 87.1 180 2.4 2.4
AKUL P 82.30 0.20 1.06 82.33 -0.03 152.8 135 -30.8 30.8
DBYG P 88.80 0.10 1.18 88.90 -0.10 203.4 160 -42.2 42.2
11 times used, S = 0.101
Deferred Data
MUN S 81.20 1.00 0.73 80.70 0.50 82.0 247 2.7 2.7
NWAO P 79.80 0.10 1.23 80.30 -0.50 138.2 171 -30.8 30.8
NWAO S 96.20 1.00 0.70 96.23 -0.03 138.2 171 1.6 1.6
ARV4 P 87.17 0.10 1.19 86.86 0.31 186.8 181 -42.2 42.2
ARV4 S 109.60 1.00 0.68 108.40 1.20 186.8 181 -40.3 40.3
DBYG S 114.35 1.00 0.67 111.95 2.40 203.4 160 -40.3 40.3
Velocity Ratios
MEKS KLBR COR2 PINW
MEKS 1.45 1.72 1.69 1.70
0.89 0.17 0.15 0.07
KLBR 1.72 1.70 0.00 0.00
0.17 0.10 0.00 0.00
COR2 1.69 0.00 1.68 0.00
0.15 0.00 0.09 0.00
PINW 1.70 0.00 0.00 1.68
0.07 0.00 0.00 0.02
Date 2023-05-09
Origin Time 1211 13.23 +- 15.94
Zone 50
Easting 513.98 +- 152.60 Longitude 117.150
Northing 6308.03 +- 92.70 Latitude -33.367
Depth 4.00 +- 565.39
Arrival times = 5 S.D. = 0.049 Seismographs = 4
Nearest recorder = 13.9 km Gap = 149.6 deg Accuracy = C
Effects Code = Imax = 0 Fault =
11 km NE ( 60 deg) of ARE
WESTERN AUSTRALIA
199 km SE (143 deg) of PERTH
193 km N (340 deg) of ALBANY
11 km E ( 99 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 2.2
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
AJ02 S-P 1.44 0.50 1.06 1.55 -0.11 13.9 279 0.0 0.0
ARV4 i P 16.43 0.03 1.84 16.43 0.00 17.5 265 7.5 37.4
ARV4 i S 18.38 0.30 1.04 18.36 0.02 17.5 265 8.4 25.5
NWAO P 21.70 0.10 1.34 21.70 0.00 49.4 9 -20.5 41.3
ONGR P 33.95 0.20 1.07 33.98 -0.03 128.0 115 -20.5 41.3
5 times used, S = 0.049
Deferred Data
NWAO S 27.40 1.00 0.76 27.19 0.21 49.4 9 2.5 24.3
PINW P 29.90 0.20 1.10 29.47 0.43 99.3 351 -20.5 41.3
ONGR S 49.20 1.00 0.70 48.08 1.12 128.0 115 -16.6 29.0
RKGY P 35.50 0.20 1.07 35.66 -0.16 138.7 186 -20.5 41.3
RKGY S 51.30 1.00 0.70 50.91 0.39 138.7 186 -16.6 29.0
MUN P 41.80 0.20 1.04 41.35 0.45 177.5 330 -42.6 53.8
MUN S 61.20 1.00 0.68 61.17 0.03 177.5 330 -16.6 29.0
KLBR P 44.50 0.20 1.03 44.72 -0.22 204.8 16 -42.6 53.8
KLBR S 67.90 1.00 0.67 68.02 -0.12 204.8 16 -38.2 44.2
Velocity Ratios
ARV4
ARV4 1.61
0.11
Date 2023-05-15
Origin Time 0234 40.64 +- 0.68
Zone 50
Easting 520.61 +- 6.19 Longitude 117.218
Northing 6462.63 +- 4.85 Latitude -31.972
Depth 5.85 +- 16.47
Arrival times = 10 S.D. = 0.140 Seismographs = 7
Nearest recorder = 34.4 km Gap = 130.6 deg Accuracy = A
Effects Code = Imax = 0 Fault =
5 km W (290 deg) of QUW
WESTERN AUSTRALIA
129 km E ( 91 deg) of PERTH
32 km NE ( 59 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 2.4
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
MEKS P 46.40 0.10 1.37 46.34 0.06 34.4 330 10.0 10.0
MEKS S 50.10 1.00 0.78 50.30 -0.20 34.4 330 10.0 10.0
COR2 P 49.25 0.10 1.33 49.22 0.03 52.2 104 6.7 6.7
COR2 S 55.35 1.00 0.76 55.17 0.18 52.2 104 6.7 6.7
PINW P 50.64 0.10 1.32 50.46 0.18 59.9 199 5.7 5.7
KLBR P 51.40 0.10 1.30 51.45 -0.05 66.0 50 5.3 5.3
KLBR S 58.90 1.00 0.74 58.95 -0.05 66.0 50 5.3 5.3
NWAO P 57.70 0.10 1.25 57.93 -0.23 105.8 179 3.3 3.3
BLDU P 65.63 0.20 1.05 65.53 0.10 158.3 342 -30.8 30.8
DBYG P 66.81 0.10 1.20 66.88 -0.07 168.0 163 -30.8 30.8
10 times used, S = 0.140
Deferred Data
PINW S 57.65 1.00 0.75 57.26 0.39 59.9 199 5.7 5.7
MUN P 55.63 0.10 1.27 56.23 -0.60 95.4 269 3.7 3.7
MUN S 66.60 1.00 0.72 67.05 -0.45 95.4 269 3.7 3.7
NWAO S 70.60 1.00 0.71 69.92 0.68 105.8 179 3.3 3.3
BLDU S 84.10 1.00 0.69 84.26 -0.16 158.3 342 -23.9 23.9
WATG P 67.30 0.20 1.05 66.59 0.71 166.1 34 -30.8 30.8
DBYG S 87.60 0.10 1.08 86.68 0.92 168.0 163 -40.3 40.3
Velocity Ratios
MEKS COR2 KLBR
MEKS 1.64 0.00 0.00
0.21 0.00 0.00
COR2 0.00 1.71 0.00
0.00 0.14 0.00
KLBR 0.00 0.00 1.70
0.00 0.00 0.11