Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.0 on date 11-08-2023 and time 00:14:34 (UTC) in region Japan [Sea]

A magnitude Mwp 6.0 earthquake occured in region: Japan [Sea], on

  • 11-08-2023 00:14:34 (UTC)
  • 11-08-2023 02:14:34 (UTC +02:00) Italian time
  • 11-08-2023 11:14:34 (UTC +11:00) local time in the region of the earthquake (Asia/Sakhalin)

and geographic coordinates (lat, lon) 41.0750, 142.9730 at 43 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 6.0
Mwpd 6.3 		2023-08-11
00:14:34		 41.0748 142.973 43 2023-08-11
00:27:24		 Sala Sismica INGV-Roma 120013031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-11 00:14:34
Latitude 41.0748
Longitude 142.9730
Depth (km) 43 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 120013031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 11643742
Semi-minor axis of confidence ellipse (meter) 10132079
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 103
Circular confidence region, given by single value of horizontal uncertainty (meter) 12249800.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147.93
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.10607
Epicentral distance of station closest to the epicenter (degree) 0.95024
Epicentral distance of station farthest from the epicenter (degree) 61.57989
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 20
Type of magnitude Mwpd
Reference to an origin 120013031
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-08-11 00:27:24

Mwp:6.0

Field Value
Value 6.0
Uncertainty 0.1
Num. used stations 21
Type of magnitude Mwp
Reference to an origin 120013031
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-08-11 00:27:24

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 29
Type of magnitude mb
Reference to an origin 120013031
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-08-11 00:27:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GE.DAG.BHZ. 2023-08-11T00:24:48.01 10.0 positive automatic P 355 6835.3689 1.14583 0.220777
IU.KEV.BHZ.00 2023-08-11T00:24:36.12 10.0 positive automatic P 339 6643.2501 0.705448 0.333321
GE.GSI.BHZ. 2023-08-11T00:24:15.62 10.0 positive automatic P 238 6330.3522 0.0651078 0.0956156
II.SIMI.BHZ.00 2023-08-11T00:24:01.62 10.0 positive automatic P 294 6109.2624 0.10539 0.276378
GE.LHMI.BHZ. 2023-08-11T00:23:58.57 10.0 positive automatic P 242 6045.9036 0.540574 0.291016
AU.KDU.BHZ.00 2023-08-11T00:23:57.63 10.0 positive automatic P 193 6063.8523 -0.936778 0.274157
GE.SOEI.BHZ. 2023-08-11T00:23:49.87 10.0 positive automatic P 203 5957.5476 -1.935 0.284029
II.KAPI.BHZ.00 2023-08-11T00:23:28.95 10.0 positive automatic P 210 5633.0058 -0.823638 0.321354
II.AAK.BHZ.00 2023-08-11T00:23:21.62 10.0 positive automatic P 296 5502.1812 0.0839876 0.455186
US.EGAK.BHZ.00 2023-08-11T00:23:08.75 10.0 positive automatic P 34 5296.0542 2.01822 0.421189
GE.FAKI.BHZ. 2023-08-11T00:22:45.17 10.0 positive automatic P 195 5002.3593 -0.0214444 0.422045
II.KURK.BHZ.00 2023-08-11T00:22:40.27 10.0 positive automatic P 305 4921.9398 0.559528 0.441202
IU.CHTO.BHZ.00 2023-08-11T00:22:33.97 10.0 positive automatic P 253 4832.1852 0.227868 0.452323
II.KDAK.BHZ.00 2023-08-11T00:22:32.52 10.0 positive automatic P 45 4792.2918 1.53876 0.45986
RM.DLV.BHZ. 2023-08-11T00:22:21.67 10.0 positive automatic P 236 4654.2855 0.0689439 0.476198
AT.TTA.BHZ. 2023-08-11T00:22:17.92 10.0 positive automatic P 37 4583.7228 1.49213 0.53875
IU.TIXI.BHZ.00 2023-08-11T00:20:48.15 10.0 positive automatic P 352 3480.4716 -1.72472 0.796056
II.TLY.BHZ.00 2023-08-11T00:20:27.40 10.0 positive automatic P 305 3186.7545 -0.124663 1.10426
IU.ULN.BHZ.00 2023-08-11T00:20:04.72 10.0 positive automatic P 297 2914.4493 -0.67199 1.28993
IU.TATO.BHZ.00 2023-08-11T00:19:43.17 10.0 positive automatic P 235 2667.2634 -2.38969 0.754717
PS.ISG.BHZ. 2023-08-11T00:19:32.21 10.0 positive automatic P 229 2537.4267 -1.60437 0.31746
JP.JMZ.BHZ. 2023-08-11T00:18:44.55 10.0 positive automatic P 216 2008.3674 1.86091 0.851064
JP.JSU.BHZ. 2023-08-11T00:17:46.75 10.0 positive automatic P 230 1540.2693 -2.01308 0.425532
PS.TJN.BHZ. 2023-08-11T00:17:38.16 10.0 positive automatic P 254 1446.1191 1.48296 1.74267
JP.JTU.BHZ. 2023-08-11T00:17:30.70 10.0 positive automatic P 243 1392.4728 -0.119029 0.987994
JP.JMN.BHZ. 2023-08-11T00:16:59.90 10.0 positive automatic P 227 1142.2233 0.0698395 0.952381
JP.JHJ2.BHZ. 2023-08-11T00:16:31.15 10.0 positive automatic P 199 926.4837 -1.8352 0.952381
JP.JSG.BHZ. 2023-08-11T00:16:21.35 10.0 positive automatic P 212 824.4414 -0.337873 0.952381
G.INU.BHZ.00 2023-08-11T00:16:20.71 10.0 positive automatic P 221 819.5907 0.58989 1.29733
JP.JGF.BHZ. 2023-08-11T00:16:15.35 10.0 positive automatic P 221 779.3532 0.287594 1.76812
IU.MAJO.BHZ.00 2023-08-11T00:15:59.52 10.0 positive automatic P 221 650.016 0.935003 0.927097
IU.YSS.BHZ.00 2023-08-11T00:15:59.20 10.0 positive automatic P 359 653.3016 -0.356155 1.9519
JP.JKA.BHZ. 2023-08-11T00:15:20.00 10.0 positive automatic P 355 339.2937 -0.072022 1.21016
JP.JTM.BHZ. 2023-08-11T00:14:56.95 10.0 positive automatic P 259 163.0923 -0.804689 1.326
II.ERM.BHZ.00 2023-08-11T00:14:50.52 10.0 positive automatic P 8 105.4722 0.439317 1.87818
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