Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.1 on date 05-02-2023 and time 01:03:21 (Italy) in region Southeast of Honshu, Japan [Sea: Japan]

A magnitude Mwp 6.1 earthquake occured in region: Southeast of Honshu, Japan [Sea: Japan], on

  • 05-02-2023 00:03:21 (UTC)
  • 05-02-2023 01:03:21 (UTC +01:00) Italian time
  • 05-02-2023 09:03:21 (UTC +09:00) local time in the region of the earthquake (Asia/Tokyo)

and geographic coordinates (lat, lon) 32.6320, 141.9350 at 20 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		mb 5.3
Mwp 6.1
Mwpd 6.1 		2023-02-05
00:03:21		 32.632 141.935 20 2023-02-05
00:16:45		 Sala Sismica INGV-Roma 114061271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-05 00:03:21
Latitude 32.6320
Longitude 141.9350
Depth (km) 20 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 114061271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 10011
Semi-minor axis of confidence ellipse (meter) 2437
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 8089.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110.077
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.16871
Epicentral distance of station closest to the epicenter (degree) 1.84545
Epicentral distance of station farthest from the epicenter (degree) 62.61554
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 44
Magnitudes information

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 18
Type of magnitude Mwp
Reference to an origin 114061271
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-02-05 00:16:45

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 9
Type of magnitude Mwpd
Reference to an origin 114061271
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-02-05 00:16:45

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 25
Type of magnitude mb
Reference to an origin 114061271
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-02-05 00:16:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.HALK.BHZ. 2023-02-05T00:13:43.65 10.0 negative automatic P 259 62.6155 0.042558 0.357777
GE.MALK.BHZ. 2023-02-05T00:13:35.62 10.0 positive automatic P 261 61.4649 -0.259863 0.34913
AU.QLP.BHZ. 2023-02-05T00:13:21.27 10.0 positive automatic P 178 59.2536 0.493146 0.42722
AU.WRKA.BHZ.00 2023-02-05T00:13:18.20 10.0 positive automatic P 194 59.1144 -1.68148 0.434499
IU.MBWA.BHZ.00 2023-02-05T00:13:09.55 10.0 positive automatic P 205 57.8233 -1.25595 0.448458
US.EGAK.BHZ.00 2023-02-05T00:12:55.48 10.0 negative automatic P 30 55.3085 2.54848 0.454213
G.SANVU.BHZ.00 2023-02-05T00:12:43.30 10.0 positive automatic P 149 53.8098 1.29447 0.492981
IU.COLA.BHZ.00 2023-02-05T00:12:37.20 10.0 positive automatic P 30 52.4572 5.12719 0.480611
IU.CTAO.BHZ.00 2023-02-05T00:12:37.02 10.0 negative automatic P 175 52.8796 1.80364 0.47439
II.AAK.BHZ.00 2023-02-05T00:12:36.02 10.0 positive automatic P 302 52.9170 0.308213 0.495379
AU.FITZ.BHZ. 2023-02-05T00:12:35.88 10.0 positive automatic P 199 53.0731 -0.728715 0
II.WRAB.BHZ.00 2023-02-05T00:12:34.60 10.0 positive automatic P 189 53.0602 -1.95779 0.510592
GE.GSI.BHZ. 2023-02-05T00:12:26.97 10.0 positive automatic P 242 52.1017 -2.4426 0.532152
II.KDAK.BHZ.00 2023-02-05T00:12:16.57 10.0 positive automatic P 39 50.0169 2.82092 0.573446
AT.TTA.BHZ. 2023-02-05T00:12:08.98 10.0 positive automatic P 32 48.7153 5.02778 0.588686
II.KURK.BHZ.00 2023-02-05T00:12:05.37 10.0 positive automatic P 311 48.9379 -0.153433 0.57128
IO.EVN.BHZ. 2023-02-05T00:11:52.90 10.0 positive automatic P 280 47.2973 -0.77568 0.252496
IU.MAKZ.BHZ.00 2023-02-05T00:11:51.02 10.0 positive automatic P 306 47.0201 0.266033 0.625503
MY.KUM.BHZ. 2023-02-05T00:11:49.77 10.0 positive automatic P 244 47.1666 -2.03545 0.550013
AU.MTN.BHZ.00 2023-02-05T00:11:45.90 10.0 positive automatic P 195 46.6313 -1.73119 0.624894
AU.KDU.BHZ.00 2023-02-05T00:11:43.15 10.0 positive automatic P 193 46.2108 -1.16441 0.647755
GE.SOEI.BHZ. 2023-02-05T00:11:37.42 10.0 positive automatic P 205 45.6144 -2.35984 0.587045
IU.CHTO.BHZ.00 2023-02-05T00:10:58.50 10.0 positive automatic P 261 40.7978 -2.25273 0.740814
GE.SANI.BHZ. 2023-02-05T00:10:32.07 10.0 positive automatic P 207 37.8184 -3.73364 0.364598
RM.SLV.BHZ. 2023-02-05T00:10:15.27 10.0 positive automatic P 261 35.5046 -0.918928 0.688886
IU.YAK.BHZ.00 2023-02-05T00:09:31.72 10.0 positive automatic P 349 30.4315 -0.0884775 0.943209
IU.ULN.BHZ.00 2023-02-05T00:09:31.32 10.0 positive automatic P 311 30.3028 0.388998 0.863739
IU.MA2.BHZ.00 2023-02-05T00:09:07.62 10.0 positive automatic P 10 27.5754 1.14482 0.833333
IU.TATO.BHZ.00 2023-02-05T00:07:49.02 10.0 positive automatic P 252 19.4330 3.16395 0.909091
IU.GUMO.BHZ.00 2023-02-05T00:07:44.27 10.0 negative automatic P 171 19.2295 0.642146 0.43956
JP.YOJ.BHZ. 2023-02-05T00:07:34.15 10.0 positive automatic P 249 18.4789 -1.21756 0.833333
IU.YSS.BHZ.00 2023-02-05T00:06:40.60 10.0 positive automatic P 2 14.3399 -1.98501 0.952381
JP.JOW.BHZ. 2023-02-05T00:06:27.00 10.0 positive automatic P 247 13.1876 0.125141 0.769231
JP.JMZ.BHZ. 2023-02-05T00:06:09.10 10.0 negative automatic P 237 11.5546 4.57819 0.909091
JP.JTU.BHZ. 2023-02-05T00:05:53.05 10.0 positive automatic P 284 10.6085 1.47502 0
JP.JSU.BHZ. 2023-02-05T00:05:42.90 10.0 positive automatic P 266 9.7889 2.48859 0.888889
II.ERM.BHZ.00 2023-02-05T00:05:33.12 10.0 positive automatic P 6 9.4325 -2.34655 0.952381
JP.JTM.BHZ. 2023-02-05T00:05:16.50 10.0 positive automatic P 355 8.1867 -1.89412 0.769231
JP.JMN.BHZ. 2023-02-05T00:05:00.00 10.0 negative automatic P 281 6.8311 0.136334 0.909091
IU.MAJO.BHZ.00 2023-02-05T00:04:33.82 10.0 positive automatic P 323 4.9736 -0.499599 0.952381
G.INU.BHZ.00 2023-02-05T00:04:33.31 10.0 positive automatic P 305 4.8906 0.176531 0.851064
JP.JGF.BHZ. 2023-02-05T00:04:32.50 10.0 positive automatic P 309 4.8166 0.308439 0.930233
JP.JSG.BHZ. 2023-02-05T00:04:17.30 10.0 positive automatic P 304 3.7325 0.0916799 0.888889
JP.JHJ2.BHZ. 2023-02-05T00:03:48.90 10.0 negative automatic P 286 1.8454 -2.35437 0.909091
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download