Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.1 on date 12-01-2021 and time 02:39:43 (UTC) in region Japan [Sea]

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

  • 12-01-2021 02:39:43 (UTC)
  • 12-01-2021 03:39:43 (UTC +01:00) Italian time
  • 12-01-2021 13:39:43 (UTC +11:00) local time in the region of the earthquake (Asia/Sakhalin)

and geographic coordinates (lat, lon) 43.6250, 140.0050 at 208 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 5.5
Mwp 6.1
Mwpd 6.0 		2021-01-12
02:39:43		 43.6254 140.005 208 2021-01-12
02:55:50		 Sala Sismica INGV-Roma 86188411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-12 02:39:43
Latitude 43.6254
Longitude 140.0050
Depth (km) 208 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 86188411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 8488
Semi-minor axis of confidence ellipse (meter) 4364
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 121
Circular confidence region, given by single value of horizontal uncertainty (meter) 7508.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40.3922
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 55
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.57999
Epicentral distance of station closest to the epicenter (degree) 2.81728
Epicentral distance of station farthest from the epicenter (degree) 61.74818
Number of stations at which the event was observed 48
Number of stations from which data was used for origin computation 48
Magnitudes information

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 17
Type of magnitude Mwp
Reference to an origin 86188411
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-01-12 02:55:50

Mwpd:6.0

Field Value
Value 6.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude Mwpd
Reference to an origin 86188411
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-01-12 02:55:50

mb:5.5

Field Value
Value 5.5
Uncertainty 0.2
Num. used stations 32
Type of magnitude mb
Reference to an origin 86188411
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-01-12 02:55:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.PUL.BHZ. 2021-01-12T02:49:40.50 10.0 positive automatic P 327 61.7482 1.21039 0
GE.DAG.BHZ. 2021-01-12T02:49:19.31 10.0 negative automatic P 354 58.8433 -0.305858 0.390802
IU.POHA.BHZ.00 2021-01-12T02:49:17.37 10.0 negative automatic P 92 58.2002 1.85732 0.427285
CN.BBB.BHZ. 2021-01-12T02:49:15.43 10.0 positive automatic P 46 57.9600 1.92066 0
AU.MTN.BHZ.00 2021-01-12T02:49:05.10 10.0 positive automatic P 190 57.0450 -2.0463 0.454669
GE.GSI.BHZ. 2021-01-12T02:49:04.32 10.0 positive automatic P 234 56.6405 0.016293 0.439829
IU.KEV.BHZ.00 2021-01-12T02:49:04.77 10.0 positive automatic P 338 56.6680 0.272761 0.460357
AU.KDU.BHZ.00 2021-01-12T02:49:02.18 10.0 positive automatic P 189 56.7284 -2.73792 0.47646
CN.RES.BHZ. 2021-01-12T02:49:01.18 10.0 positive automatic P 15 56.2490 -0.352958 0.445506
GE.SOEI.BHZ. 2021-01-12T02:48:52.17 10.0 positive automatic P 199 55.2646 -2.55211 0.481843
AT.CRAG.BHZ. 2021-01-12T02:48:46.78 10.0 positive automatic P 45 53.7856 2.85829 0.509873
GE.KBS.BHZ.00 2021-01-12T02:48:44.22 10.0 negative automatic P 349 53.7434 0.598885 0.505685
MY.KUM.BHZ. 2021-01-12T02:48:29.87 10.0 negative automatic P 234 51.6129 1.8391 0
II.KAPI.BHZ.00 2021-01-12T02:48:29.15 10.0 positive automatic P 206 51.9578 -1.46786 0.48269
II.NIL.BHZ.00 2021-01-12T02:48:29.47 10.0 negative automatic P 283 51.6591 1.00177 0.427361
AT.SKAG.BHZ. 2021-01-12T02:48:26.26 10.0 negative automatic P 41 51.0640 2.29158 0.554362
II.ARTI.BHZ.00 2021-01-12T02:48:21.97 10.0 positive automatic P 315 50.7272 0.478804 0.554664
CN.INK.BHZ. 2021-01-12T02:48:07.88 10.0 negative automatic P 29 48.8844 0.29561 0.5857
MY.SBM.BHZ. 2021-01-12T02:48:01.37 10.0 negative automatic P 219 47.9838 0.62263 0.587197
GE.SANI.BHZ. 2021-01-12T02:47:53.92 10.0 positive automatic P 199 47.3736 -2.11009 0.626699
II.AAK.BHZ.00 2021-01-12T02:47:50.52 10.0 positive automatic P 293 46.5199 0.808638 0.626763
IU.COLA.BHZ.00 2021-01-12T02:47:30.30 10.0 positive automatic P 36 44.0300 0.369593 0.679599
II.KDAK.BHZ.00 2021-01-12T02:47:21.37 10.0 negative automatic P 46 42.9484 0.083095 0.667583
II.KURK.BHZ.00 2021-01-12T02:47:06.35 10.0 positive automatic P 302 41.1012 -0.0380754 0.662972
IU.MAKZ.BHZ.00 2021-01-12T02:46:58.57 10.0 negative automatic P 296 40.0598 0.634595 0.755031
RM.SLV.BHZ. 2021-01-12T02:46:36.57 10.0 positive automatic P 245 37.2724 1.77623 0.782095
AK.TNA.BHZ. 2021-01-12T02:46:20.77 10.0 negative automatic P 34 35.6849 -0.520926 0.817152
AK.GAMB.BHZ. 2021-01-12T02:46:03.77 10.0 negative automatic P 36 33.7201 -0.698249 0.75152
IU.BILL.BHZ.00 2021-01-12T02:45:11.72 10.0 negative automatic P 21 28.1027 -3.6063 0.784314
II.TLY.BHZ.00 2021-01-12T02:44:52.82 10.0 negative automatic P 301 25.4777 0.856662 0
AT.SMY.BHZ. 2021-01-12T02:44:41.76 10.0 positive automatic P 56 24.2104 1.33363 0.892857
IU.TATO.BHZ.00 2021-01-12T02:44:39.27 10.0 positive automatic P 225 23.9995 0.734665 0.8
JP.JHJ2.BHZ. 2021-01-12T02:43:57.75 10.0 positive automatic S 181 10.5106 -7.76875 0
JP.JMZ.BHZ. 2021-01-12T02:43:54.20 10.0 negative automatic P 205 19.1843 3.31197 0.909091
JP.JOW.BHZ. 2021-01-12T02:43:52.50 10.0 positive automatic P 213 19.2857 0.495975 0.909091
IU.YAK.BHZ.00 2021-01-12T02:43:50.12 10.0 negative automatic P 345 19.3774 -2.8556 0.909091
IU.MA2.BHZ.00 2021-01-12T02:43:28.52 10.0 negative automatic P 19 17.2434 -1.37618 0.888889
JP.JCJ.BHZ. 2021-01-12T02:43:22.90 10.0 positive automatic P 173 16.6226 -0.163655 0.97561
IU.PET.BHZ.00 2021-01-12T02:43:10.52 10.0 positive automatic P 46 15.4785 0.073899 0.869565
JP.JSU.BHZ. 2021-01-12T02:42:55.55 10.0 negative automatic P 215 14.2641 -0.202251 0.930233
JP.JTU.BHZ. 2021-01-12T02:42:31.45 10.0 positive automatic P 226 12.2507 0.803593 0.769231
JP.JHJ2.BHZ. 2021-01-12T02:42:05.50 10.0 positive automatic P 181 10.5106 -3.02145 0.888889
JP.JSG.BHZ. 2021-01-12T02:41:48.45 10.0 positive automatic P 190 9.0575 -1.35222 0.833333
G.INU.BHZ.00 2021-01-12T02:41:43.41 10.0 positive automatic P 196 8.5862 -0.289119 0.930233
JP.JGF.BHZ. 2021-01-12T02:41:39.55 10.0 positive automatic P 195 8.2756 -0.203612 0.909091
IU.MAJO.BHZ.00 2021-01-12T02:41:26.32 10.0 positive automatic P 192 7.2117 0.389308 0.952381
IU.YSS.BHZ.00 2021-01-12T02:40:43.85 10.0 positive automatic P 29 3.8552 0.680278 0.930233
JP.JTM.BHZ. 2021-01-12T02:40:32.90 10.0 negative automatic P 164 2.9423 0.628745 0.952381
II.ERM.BHZ.00 2021-01-12T02:40:31.87 10.0 negative automatic P 124 2.8173 1.04813 0.869565
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