Data Report
Bulletin / 2020-12
Contributed by CUPWA
Date 2020-12-04
Origin Time 2345 49.68 +- 0.72
Zone 50
Easting 527.90 +- 6.64 Longitude 117.295
Northing 6459.78 +- 4.94 Latitude -31.998
Depth 11.46 +- 19.18
Arrival times = 14 S.D. = 0.137 Seismographs = 9
Nearest recorder = 40.8 km Gap = 116.3 deg Accuracy = B
Effects Code = Imax = 0 Fault =
2 km E ( 82 deg) of QUA
WESTERN AUSTRALIA
137 km E ( 93 deg) of PERTH
37 km E ( 69 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 2.7
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
MEKS P 56.50 0.30 1.09 56.61 -0.11 40.8 323 16.0 16.0
COR2 P 57.00 0.10 1.35 57.19 -0.19 44.5 102 14.8 14.8
COR2 S 62.41 1.00 0.76 62.39 0.02 44.5 102 14.8 14.8
MECK S-P 5.43 2.00 0.73 5.68 -0.25 48.9 326 0.0 0.0
PINW P 59.65 0.10 1.31 59.69 -0.04 60.2 207 10.9 10.9
PINW S 66.90 1.00 0.75 66.62 0.28 60.2 207 10.9 10.9
KLBR P 60.06 0.10 1.31 60.07 -0.02 62.6 43 10.7 10.7
KLBR S 67.51 1.00 0.74 67.28 0.24 62.6 43 10.7 10.7
NWAO P 66.33 0.10 1.26 66.37 -0.04 103.1 183 -30.8 30.8
AKUL PG 67.70 0.20 1.09 67.70 -0.00 109.8 133 6.1 6.1
AKUL S 80.40 1.00 0.71 80.19 0.21 109.8 133 6.1 6.1
KORD PG 70.40 0.20 1.08 70.29 0.11 125.8 9 5.3 5.3
CADX PG 72.22 0.30 0.98 72.12 0.10 137.0 353 4.9 4.9
CADX SG 87.65 1.00 0.70 87.67 -0.02 137.0 353 4.9 4.9
14 times used, S = 0.137
Deferred Data
QUA S-P 1.00 5.00 0.75 1.35 -0.35 2.3 262 0.0 0.0
MEKS S 60.60 1.00 0.77 61.41 -0.81 40.8 323 16.0 16.0
NWAO S 78.20 1.00 0.71 78.36 -0.16 103.1 183 6.5 6.5
KORD S 84.90 1.00 0.70 84.42 0.48 125.8 9 -23.9 23.9
DBYG P 75.45 0.30 0.97 74.80 0.65 163.3 165 -30.8 30.8
DBYG S 94.30 1.00 0.69 93.74 0.56 163.3 165 -40.3 40.3
Velocity Ratios
COR2 PINW KLBR
COR2 1.74 0.00 0.00
0.16 0.00 0.00
PINW 0.00 1.73 0.00
0.00 0.12 0.00
KLBR 0.00 0.00 1.72
0.00 0.00 0.11
Date 2020-12-09
Origin Time 0213 34.57 +- 1.07
Zone 50
Easting 525.75 +- 10.33 Longitude 117.273
Northing 6458.64 +- 7.78 Latitude -32.008
Depth 2.93 +- 34.03
Arrival times = 8 S.D. = 0.107 Seismographs = 5
Nearest recorder = 46.3 km Gap = 158.8 deg Accuracy = C
Effects Code = Imax = 0 Fault =
0 km S (173 deg) of QUA
WESTERN AUSTRALIA
135 km E ( 93 deg) of PERTH
35 km E ( 69 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 2.2
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
COR2 P 42.20 0.10 1.34 42.15 0.05 46.3 100 4.0 4.0
COR2 S 47.55 1.00 0.76 47.41 0.14 46.3 100 4.0 4.0
KLBR P 45.14 0.10 1.31 45.17 -0.04 64.9 44 2.9 2.9
KLBR S 52.23 1.00 0.74 52.52 -0.29 64.9 44 2.9 2.9
NWAO P 51.13 0.10 1.26 51.20 -0.07 101.9 182 1.8 1.8
KORD P 55.42 0.10 1.23 55.33 0.09 127.2 9 -30.8 30.8
BLDU P 60.46 0.20 1.05 60.47 -0.01 163.7 340 -30.8 30.8
BLDU S 79.90 1.00 0.69 79.82 0.08 163.7 340 1.1 1.1
8 times used, S = 0.107
Deferred Data
MEKS w P 42.60 0.50 0.70 41.20 1.40 40.5 326 4.5 4.5
MEKS w S 46.00 1.00 0.55 45.80 0.20 40.5 326 4.5 4.5
PINW S 52.20 1.00 0.75 50.68 1.52 58.2 205 3.0 3.0
NWAO S 63.40 1.00 0.71 62.74 0.66 101.9 182 1.8 1.8
KORD S 70.00 1.00 0.70 69.73 0.27 127.2 9 1.4 1.4
Velocity Ratios
COR2 KLBR BLDU
COR2 1.70 0.00 1.77
0.16 0.00 0.14
KLBR 0.00 1.67 1.81
0.00 0.11 0.17
BLDU 1.77 1.81 1.75
0.14 0.17 0.05
Date 2020-12-15
Origin Time 0810 45.49 +- 1.56
Zone 50
Easting 527.59 +- 8.90 Longitude 117.290
Northing 6544.46 +- 4.41 Latitude -31.234
Depth 6.58 +- 33.14
Arrival times = 10 S.D. = 0.123 Seismographs = 7
Nearest recorder = 44.5 km Gap = 130.1 deg Accuracy = B
Effects Code = Imax = 0 Fault =
9 km NW (317 deg) of WYAX
WESTERN AUSTRALIA
158 km NE ( 60 deg) of PERTH
25 km E ( 99 deg) of Dowerin
Record Dur Sync Unc Resp Seismometer Recorder Pol
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
KORD P 53.26 0.05 1.55 53.17 0.09 44.5 27 -13.5 38.8
KORD S 58.41 1.00 0.76 58.52 -0.11 44.5 27 -10.2 29.4
BLDU P 60.44 0.20 1.11 60.33 0.11 88.5 321 -13.5 38.8
WATG P 62.80 0.10 1.26 62.67 0.13 103.0 57 -13.5 38.8
WATG S 74.90 1.00 0.71 74.91 -0.01 103.0 57 -10.2 29.4
COR2 P 62.90 0.10 1.26 62.88 0.02 104.2 155 -13.5 38.8
BCON P 63.50 0.10 1.25 63.72 -0.22 109.4 24 -13.5 38.8
BCON S 76.60 1.00 0.71 76.71 -0.11 109.4 24 -10.2 29.4
PINW P 68.70 0.10 1.22 68.79 -0.09 140.8 191 -13.5 38.8
AKUL P 74.76 0.10 1.20 74.75 0.01 178.9 153 -39.9 52.0
10 times used, S = 0.123
Deferred Data
KLBR P 53.26 0.10 1.32 55.62 -2.36 59.4 132 -13.5 38.8
KLBR S 62.10 1.00 0.75 62.73 -0.63 59.4 132 -10.2 29.4
AKUL S 94.70 1.00 0.68 96.14 -1.44 178.9 153 -37.9 45.7
NWAO P 74.90 0.20 1.04 75.87 -0.97 187.7 181 -39.9 52.0
Velocity Ratios
KORD WATG BCON
KORD 1.66 0.00 0.00
0.14 0.00 0.00
WATG 0.00 1.70 0.00
0.00 0.07 0.00
BCON 0.00 0.00 1.73
0.00 0.00 0.07
Date 2020-12-18
Origin Time 1822 23.50 +- 0.64
Zone 50
Easting 702.14 +- 4.00 Longitude 119.122
Northing 6545.06 +- 6.25 Latitude -31.211
Depth 2.00 +- 13.61 N
Arrival times = 13 S.D. = 0.298 Seismographs = 7
Nearest recorder = 19.6 km Gap = 149.9 deg Accuracy = B
Effects Code = Imax = 0 Fault =
19 km W (276 deg) of STHX
WESTERN AUSTRALIA
321 km E ( 76 deg) of PERTH
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
STHX P 26.58 0.10 1.43 26.72 -0.14 19.6 96 6.7 6.7
STHX S 28.90 0.50 0.93 28.95 -0.05 19.6 96 6.7 6.7
WATG P 40.17 0.10 1.26 40.30 -0.13 102.9 300 1.2 1.2
WATG S 52.00 1.00 0.71 51.94 0.06 102.9 300 1.2 1.2
KLBR P 45.28 0.10 1.23 45.68 -0.40 136.7 251 -30.8 30.8
KLBR S 60.81 1.00 0.70 61.26 -0.45 136.7 251 1.0 1.0
HYDN P 46.03 0.10 1.22 46.04 -0.01 139.4 189 -30.8 30.8
HYDN S 62.10 1.00 0.70 62.01 0.09 139.4 189 0.9 0.9
KORD P 48.85 0.10 1.21 48.77 0.08 158.9 283 -30.8 30.8
KORD S 67.30 1.00 0.69 67.39 -0.09 158.9 283 0.8 0.8
BCON P 49.76 0.20 1.05 49.24 0.52 162.1 306 -30.8 30.8
BCON S 68.20 1.00 0.69 68.28 -0.08 162.1 306 0.8 0.8
AKUL P 52.92 0.10 1.19 52.44 0.48 185.9 209 -42.2 42.2
13 times used, S = 0.298
Deferred Data
AKUL S 73.40 1.00 0.68 74.03 -0.63 185.9 209 -40.3 40.3
Velocity Ratios
STHX WATG KLBR HYDN KORD BCON
STHX 1.75 1.70 1.71 1.71 1.72 1.70
0.23 0.14 0.10 0.10 0.08 0.09
WATG 1.70 1.71 0.00 0.00 0.00 0.00
0.14 0.07 0.00 0.00 0.00 0.00
KLBR 1.71 0.00 1.71 0.00 0.00 0.00
0.10 0.00 0.05 0.00 0.00 0.00
HYDN 1.71 0.00 0.00 1.71 0.00 0.00
0.10 0.00 0.00 0.05 0.00 0.00
KORD 1.72 0.00 0.00 0.00 1.73 0.00
0.08 0.00 0.00 0.00 0.05 0.00
BCON 1.70 0.00 0.00 0.00 0.00 1.70
0.09 0.00 0.00 0.00 0.00 0.05
Date 2020-12-28
Origin Time 1740 42.97 +- 1.38
Zone 50
Easting 528.48 +- 5.24 Longitude 117.302
Northing 6460.11 +- 4.30 Latitude -31.995
Depth 10.83 +- 44.97
Arrival times = 12 S.D. = 0.151 Seismographs = 7
Nearest recorder = 40.9 km Gap = 115.0 deg Accuracy = B
Effects Code = Imax = 0 Fault =
2 km E (101 deg) of QUW
WESTERN AUSTRALIA
137 km E ( 92 deg) of PERTH
38 km E ( 68 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 2.5
DATA USED
Code Wave AT +- WT CT DT Dist Azim Ad Ae
MEKS P 49.70 0.10 1.36 49.80 -0.10 40.9 322 15.1 15.1
COR2 P 50.17 0.10 1.35 50.29 -0.11 44.0 103 14.2 14.2
COR2 S 55.60 0.50 0.88 55.57 0.03 44.0 103 14.2 14.2
PINW P 53.12 0.10 1.31 52.93 0.20 60.8 207 10.2 10.2
PINW S 60.20 1.00 0.75 60.12 0.08 60.8 207 10.2 10.2
KLBR P 53.28 0.10 1.31 53.12 0.16 61.9 43 10.2 10.2
KLBR S 60.46 1.00 0.74 60.45 0.01 61.9 43 10.2 10.2
NWAO P 59.50 0.20 1.09 59.76 -0.26 103.5 183 6.1 6.1
AKUL P 60.71 0.10 1.25 60.74 -0.03 109.6 133 5.8 5.8
AKUL S 73.64 1.00 0.71 73.58 0.06 109.6 133 5.8 5.8
CADX PG 65.21 0.30 0.98 65.10 0.11 136.7 353 4.7 4.7
CADX SG 80.90 1.00 0.70 81.08 -0.18 136.7 353 4.7 4.7
12 times used, S = 0.151
Deferred Data
QUA S-P 0.70 10.00 0.65 1.34 -0.64 2.9 257 0.0 0.0
MEKS S 54.01 0.50 0.89 54.74 -0.73 40.9 322 15.1 15.1
NWAO S 71.70 1.00 0.71 71.89 -0.19 103.5 183 6.1 6.1
KORD P 63.60 0.20 1.08 63.21 0.39 125.3 8 -24.2 24.2
KORD S 78.24 1.00 0.70 77.78 0.46 125.3 8 -24.6 24.6
BLDU P 68.80 0.10 1.21 68.80 -0.00 163.3 339 -24.2 24.2
BLDU S 87.70 1.00 0.69 87.39 0.31 163.3 339 -24.6 24.6
DBYG P 68.73 0.30 0.97 68.82 -0.09 163.4 165 -24.2 24.2
DBYG S 88.33 1.00 0.69 87.42 0.91 163.4 165 -24.6 24.6
WATG P 69.50 0.20 1.05 68.87 0.63 163.9 31 -24.2 24.2
BCON P 72.73 0.20 1.04 72.27 0.46 189.1 13 -38.3 38.3
BCON S 94.70 1.00 0.68 93.32 1.38 189.1 13 -38.5 38.5
Velocity Ratios
COR2 PINW KLBR AKUL
COR2 1.75 0.00 0.00 1.71
0.10 0.00 0.00 0.18
PINW 0.00 1.70 0.00 0.00
0.00 0.12 0.00 0.00
KLBR 0.00 0.00 1.70 0.00
0.00 0.00 0.11 0.00
AKUL 1.71 0.00 0.00 1.73
0.18 0.00 0.00 0.07