This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 5.1 mb
Local datetime 2023/04/01 00:29
Universal datetime 2023/03/31 15:29
Latitude 41.30 ° ± 5 km
Longitude 142.79 ° ± 6 km
Depth 49 km (from location) ± 5 km

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See the seismogram of this event.

Near cities

This table shows only the most populated cities around the epicenter.
Name Distance (km) Population
Sapporo  231 1.883027e+06
Asahikawa  275 356612
Akita  288 320069
Aomori  182 298394
Morioka  224 295172
Hakodate  179 275730
Hachinohe  136 239046
Kushiro  228 183612
Hirosaki  211 174972
Tomakomai  182 174806
Obihiro  184 173890
Otaru  258 143792
Kitami  298 113137
Sakata  364 100446
Muroran  190 96197

Past seismicity

  This map shows only the 2 most significant earthquakes around this event.

Event details

Parameters

Evaluation status
RMS 1.54
Azimuthal gap 160.63 °
Number of stations used 23
Number of phases used 23

Webservices

The data of this event are available in various formats (QuakeML, GeoJSON and text) through the following links :

QuakeML GeoJSON Text

Phases

Network Station Phase Time Residual (s) Azimuth (°) Distance (°) Mode
II ERM P 15:29:55.32 -1.33 21.01 0.77 Automatic
IU YSS P 15:31:04.40 1.6 359.83 5.66 Automatic
IU MAJO P 15:31:04.92 -1.73 218.35 5.94 Automatic
IU INCN P 15:32:48.2 3.81 258.26 13.04 Automatic
IU MA2 P 15:33:57.37 -0.93 12.52 18.94 Automatic
IU YAK P 15:34:29.87 -3.44 343.63 22.17 Automatic
IU ULN P 15:35:09.92 -0.53 296.78 26.03 Automatic
II TLY P 15:35:32.64 0.34 304.81 28.47 Automatic
IU BILL P 15:35:41.89 -0.4 17.66 29.63 Automatic
IU MAKZ P 15:37:36.22 -0.08 298.72 42.95 Automatic
IU CHTO P 15:37:38.74 -1.03 252.38 43.47 Automatic
II KURK P 15:37:44.84 -0.74 305.03 44.1 Automatic
IU COLA P 15:37:53.79 3.02 34.35 44.77 Automatic
II AAK P 15:38:26.32 -0.38 295.73 49.35 Automatic
II ALE P 15:39:13.7 0.39 3.85 55.56 Automatic
IU MBWA P 15:40:20.54 -0.31 203.56 66.02 Automatic
II KIV P 15:40:42.32 1.16 310.48 68.7 Automatic
II FFC P 15:40:44.84 0.04 33.95 69.28 Automatic
IU KIEV P 15:40:56.47 -0.74 322.2 71.31 Automatic
II UOSS P 15:40:56.57 -0.83 287.26 71.4 Automatic
IU RSSD P 15:41:23.94 0.96 42.93 75.69 Automatic
IU ANTO P 15:41:32.2 1.96 312.23 76.94 Automatic
II RAYN P 15:41:45.4 -0.8 292.49 79.86 Automatic