Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 5.7 on date 22-03-2023 and time 08:37:01 (Italy) in region Near east coast of eastern Honshu, Japan [Sea: Japan]

A magnitude Mwp 5.7 earthquake occured in region: Near east coast of eastern Honshu, Japan [Sea: Japan], on

  • 22-03-2023 07:37:01 (UTC)
  • 22-03-2023 08:37:01 (UTC +01:00) Italian time
  • 22-03-2023 16:37:01 (UTC +09:00) local time in the region of the earthquake (Asia/Tokyo)

and geographic coordinates (lat, lon) 40.3380, 142.9980 at 15 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 5.7
Mwpd 5.9 		2023-03-22
07:37:01		 40.3383 142.998 15 2023-03-22
07:54:00		 Sala Sismica INGV-Roma 115618791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-22 07:37:01
Latitude 40.3383
Longitude 142.9980
Depth (km) 15 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 115618791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 27140
Semi-minor axis of confidence ellipse (meter) 13176
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 290
Circular confidence region, given by single value of horizontal uncertainty (meter) 21906.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107.316
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.41375
Epicentral distance of station closest to the epicenter (degree) 1.53639
Epicentral distance of station farthest from the epicenter (degree) 66.67056
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 34
Magnitudes information

Mwpd:5.9

Field Value
Value 5.9
Uncertainty 0.1
Num. used stations 8
Type of magnitude Mwpd
Reference to an origin 115618791
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-03-22 07:54:00

Mwp:5.7

Field Value
Value 5.7
Uncertainty 0.2
Num. used stations 14
Type of magnitude Mwp
Reference to an origin 115618791
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-03-22 07:54:00

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 23
Type of magnitude mb
Reference to an origin 115618791
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-03-22 07:54:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.NEW.BHZ.00 2023-03-22T07:47:50.85 10.0 negative automatic P 46 66.6706 1.24991 0.310395
IU.MBWA.BHZ.00 2023-03-22T07:47:36.60 10.0 negative automatic P 204 65.2009 -3.45086 0.332422
IU.MBWA.BHZ.00 2023-03-22T07:47:47.82 10.0 negative automatic sP 204 65.2009 2.38516 0
US.NLWA.BHZ.00 2023-03-22T07:47:40.38 10.0 positive automatic sP 49 63.3683 6.82873 0
GE.DAG.BHZ. 2023-03-22T07:47:21.31 10.0 positive automatic P 355 62.3155 0.310687 0.353662
IU.KEV.BHZ.00 2023-03-22T07:47:10.12 10.0 negative automatic P 339 60.5435 1.09235 0.394259
G.SANVU.BHZ.00 2023-03-22T07:47:04.20 10.0 positive automatic P 153 60.1493 -2.12396 0.199867
GE.GSI.BHZ. 2023-03-22T07:46:40.27 10.0 positive automatic P 238 56.6590 -1.6921 0.411579
II.SIMI.BHZ.00 2023-03-22T07:46:32.95 10.0 positive automatic P 294 55.3505 0.123011 0.486389
GE.SOEI.BHZ. 2023-03-22T07:46:23.12 10.0 positive automatic P 203 53.0024 7.48015 0.505561
AU.MTN.BHZ.00 2023-03-22T07:46:21.65 10.0 negative automatic P 194 54.3077 -3.40122 0.479727
AU.KDU.BHZ.00 2023-03-22T07:46:18.90 10.0 negative automatic P 193 53.9149 -3.26938 0.503055
CN.ATLI.BHZ. 2023-03-22T07:46:16.78 10.0 negative automatic P 39 52.8877 2.02733 0.474271
II.AAK.BHZ.00 2023-03-22T07:45:53.02 10.0 positive automatic P 297 49.9123 0.413546 0.55516
IO.EVN.BHZ. 2023-03-22T07:45:33.55 10.0 positive automatic P 273 47.2989 0.474378 0
IU.COLA.BHZ.00 2023-03-22T07:45:18.95 10.0 positive automatic P 34 45.4670 1.09063 0.589457
II.KURK.BHZ.00 2023-03-22T07:45:12.50 10.0 positive automatic P 306 44.7858 0.0550922 0.650123
GE.SANI.BHZ. 2023-03-22T07:45:11.72 10.0 positive automatic P 204 45.1463 -3.56285 0.594717
GE.FAKI.BHZ. 2023-03-22T07:45:06.57 10.0 negative automatic P 195 44.3611 -2.47343 0
IU.MAKZ.BHZ.00 2023-03-22T07:45:02.97 10.0 positive automatic P 300 43.5555 0.319359 0.621154
IU.CHTO.BHZ.00 2023-03-22T07:45:00.45 10.0 positive automatic P 254 43.3381 -0.421972 0.701007
RM.SLV.BHZ. 2023-03-22T07:44:19.22 10.0 positive automatic P 252 38.1392 1.22534 0.715476
IU.ULN.BHZ.00 2023-03-22T07:42:37.37 10.0 positive automatic P 298 26.6172 -0.0745835 0.952381
IU.YAK.BHZ.00 2023-03-22T07:42:01.67 10.0 positive automatic P 344 23.1363 -3.33247 0.851064
IU.MA2.BHZ.00 2023-03-22T07:41:27.67 10.0 positive automatic P 12 19.8438 -2.01831 0.43956
JP.JSU.BHZ. 2023-03-22T07:40:09.05 10.0 negative automatic P 233 13.4341 -0.434533 0.909091
JP.JTU.BHZ. 2023-03-22T07:39:54.60 10.0 positive automatic P 246 12.2445 1.42398 0
JP.JMN.BHZ. 2023-03-22T07:39:21.85 10.0 positive automatic P 231 9.8215 1.7523 0.909091
JP.JHJ2.BHZ. 2023-03-22T07:38:49.10 10.0 positive automatic P 200 7.6587 -1.2532 0.930233
G.INU.BHZ.00 2023-03-22T07:38:39.26 10.0 positive automatic P 225 6.8593 -0.130187 0.740741
IU.YSS.BHZ.00 2023-03-22T07:38:36.40 10.0 positive automatic P 359 6.6223 0.259519 0.816327
JP.JGF.BHZ. 2023-03-22T07:38:34.90 10.0 positive automatic P 225 6.4936 0.451667 0.909091
IU.MAJO.BHZ.00 2023-03-22T07:38:19.57 10.0 positive automatic P 226 5.3350 1.06526 0.952381
II.ERM.BHZ.00 2023-03-22T07:37:28.07 10.0 positive automatic P 4 1.6809 -0.128834 0.909091
JP.JTM.BHZ. 2023-03-22T07:37:26.30 10.0 negative automatic P 288 1.5364 0.0723098 0.952381
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