Earthquake with magnitude of Mwpd 7.4 on date 01-01-2024 and time 08:10:13 (Italy) in region Near west coast of eastern Honshu, Japan [Sea: Japan]

A magnitude Mwpd 7.4 earthquake occured in region: Near west coast of eastern Honshu, Japan [Sea: Japan], on

  • 01-01-2024 07:10:13 (UTC)
  • 01-01-2024 08:10:13 (UTC +01:00) Italian time
  • 01-01-2024 16:10:13 (UTC +09:00) local time in the region of the earthquake (Asia/Tokyo)

and geographic coordinates (lat, lon) 37.3300, 137.4200 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.

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
Rev200
Mwpd 7.4 2024-01-01
07:10:13
37.33 137.42 20 2024-01-02
09:51:36
Sala Sismica INGV-Roma 124417771
Reviewed
Rev200
Mwp 7.4 2024-01-01
07:10:13
37.33 137.42 20 2024-01-02
09:42:51
Sala Sismica INGV-Roma 124417641
Reviewed
Rev100
mb 5.8
Mwp 7.1
Mwpd 7.3
2024-01-01
07:10:18
37.4273 137.241 76 2024-01-01
07:24:36
Sala Sismica INGV-Roma 124392221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-01 07:10:13
Latitude 37.3300
Longitude 137.4200
Depth (km) 20 ± 13 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 200 -> SURVEY-INGV
Event type earthquake
Origin ID 124417771

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 7000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 1
Number of defining phases 1
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.258
Epicentral distance of station closest to the epicenter (degree)
Epicentral distance of station farthest from the epicenter (degree)
Number of stations at which the event was observed 0
Number of stations from which data was used for origin computation 0
Magnitudes information

Mwp:7.4

Field Value
Value 7.4
Uncertainty
Num. used stations
Type of magnitude Mwp
Reference to an origin 124417641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-02 09:42:51

Mwpd:7.3

Field Value
Value 7.3
Uncertainty 0.2
Num. used stations 37
Type of magnitude Mwpd
Reference to an origin 124392221
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2024-01-01 07:24:36

Mwp:7.1

Field Value
Value 7.1
Uncertainty 0.2
Num. used stations 38
Type of magnitude Mwp
Reference to an origin 124392221
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2024-01-01 07:24:36

Mwpd:7.4

Field Value
Value 7.4
Uncertainty
Num. used stations
Type of magnitude Mwpd
Reference to an origin 124417771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-02 09:51:36

mb:5.8

Field Value
Value 5.8
Uncertainty 0.1
Num. used stations 37
Type of magnitude mb
Reference to an origin 124392221
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2024-01-01 07:24:36
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Finite source from geodetic data
Rupture distribution along the seismic source derived from the analysis of displacement maps obtained from Alos-2 (Jaxa) satellite images. Displacement data produced at the INGV GeoSAR Lab with sarscape (sarmap).

Focal Plane FP1

This source model, derived from 3 InSAR dataset(s) all including less than one day after the event, is characterized by a single SW-NE oriented fault (strike 52°), dipping towards the SE at 39° degrees and a nearly pure inverse rupture (rake 90°). Slip peak is approximately 6.9 m at a depth of 9.6 km. The energy released is 1.66E+20 Nm, corresponding to an M 7.4 earthquake. InSAR data, model and ancillary information can be found in the data_and_model.zip file, available for download
Expected surface displacement scenario
This section shows maps of the predicted surface displacement based on a finite fault derived from focal mechanisms. Images contain maps of simulated displacement; they only provide qualitative indications about the expected displacement. Use the pull-down menu to select a scenario from those available. Finite fault dimensions and mean slip are based on the scaling factore in Leonard (2010), doi 10.1785/0120090189. Scenarios are available only for a limited period after the event
Predicted InSAR fringes for ascending and descending Sentinel-1 orbits, based on the displacement scenario.
Predicted InSAR fringes for ascending and descending Sentinel-1 orbits, based on the displacement scenario.
Predicted InSAR fringes for ascending and descending Sentinel-1 orbits, based on the displacement scenario.
Sar Image Footprints and Acquisitions
SAR image footprints and acquisition time for the Sentinel-1 (European Space Agency) satellite constellation.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download