Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 5.9 on date 04-10-2023 and time 05:57:20 (UTC) in region Southeast of Honshu, Japan [Sea: Japan]

A magnitude Mwp 5.9 earthquake occured in region: Southeast of Honshu, Japan [Sea: Japan], on

  • 04-10-2023 05:57:20 (UTC)
  • 04-10-2023 07:57:20 (UTC +02:00) Italian time
  • 04-10-2023 14:57:20 (UTC +09:00) local time in the region of the earthquake (Asia/Tokyo)

and geographic coordinates (lat, lon) 30.6530, 142.0290 at 18 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 5.2
Mwp 5.9
Mwpd 6.1 		2023-10-04
05:57:20		 30.6527 142.029 18 2023-10-04
06:17:34		 Sala Sismica INGV-Roma 121738461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-04 05:57:20
Latitude 30.6527
Longitude 142.0290
Depth (km) 18 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 121738461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 18456272
Semi-minor axis of confidence ellipse (meter) 6128429
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 14907700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114.71
Number of associated phases, regardless of their use for origin computation 86
Number of defining phases 86
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.27282
Epicentral distance of station closest to the epicenter (degree) 3.09841
Epicentral distance of station farthest from the epicenter (degree) 93.46308
Number of stations at which the event was observed 86
Number of stations from which data was used for origin computation 86
Magnitudes information

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 13
Type of magnitude Mwpd
Reference to an origin 121738461
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-10-04 06:17:34

Mwp:5.9

Field Value
Value 5.9
Uncertainty 0.1
Num. used stations 15
Type of magnitude Mwp
Reference to an origin 121738461
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-10-04 06:17:34

mb:5.2

Field Value
Value 5.2
Uncertainty 0.2
Num. used stations 99
Type of magnitude mb
Reference to an origin 121738461
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-10-04 06:17:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
RD.LOR.BHZ. 2023-10-04T06:10:34.80 10.0 positive automatic P 333 10374.4041 0.883748 0.0971995
US.WMOK.BHZ.00 2023-10-04T06:10:33.48 10.0 positive automatic P 46 10334.8659 0.073723 0.095468
MN.TUE.BHZ. 2023-10-04T06:10:27.82 10.0 positive automatic P 330 10193.13 0.234595 0.0959362
HL.ITM.HHZ. 2023-10-04T06:10:26.79 10.0 positive automatic P 316 10216.5954 -0.0694014 0.0961439
MN.DIVS.BHZ. 2023-10-04T06:10:10.85 10.0 positive automatic P 322 9817.4505 -0.119243 0.105797
US.SDCO.BHZ.00 2023-10-04T06:10:05.58 10.0 positive automatic P 47 9658.0212 1.512 0.109319
IU.TUC.BHZ.00 2023-10-04T06:10:04.22 10.0 positive automatic P 54 9622.6122 0.445839 0.10414
GE.FLT1.BHZ. 2023-10-04T06:10:01.80 10.0 positive automatic P 332 9607.1166 0.155379 0.104476
GE.PSZ.BHZ. 2023-10-04T06:09:59.25 10.0 positive automatic P 325 9533.0352 0.115224 0.113509
GE.MORC.BHZ. 2023-10-04T06:09:58.30 10.0 positive automatic P 328 9513.8988 0.230002 0.113966
US.MVCO.BHZ.00 2023-10-04T06:09:56.95 10.0 positive automatic P 49 9481.8531 0.78002 0.116087
US.WUAZ.BHZ.00 2023-10-04T06:09:52.75 10.0 positive automatic P 52 9376.9803 0.0726122 0.109667
IU.ANTO.BHZ.00 2023-10-04T06:09:48.95 10.0 positive automatic P 313 9293.1753 0.975289 0.120849
GE.TIRR.BHZ. 2023-10-04T06:09:47.72 10.0 positive automatic P 319 9281.5869 0.753726 0.117021
PL.KWP.BHZ. 2023-10-04T06:09:46.78 10.0 positive automatic P 325 9252.9267 0.500611 0.0383769
KO.BNN.HHZ. 2023-10-04T06:09:41.00 10.0 positive automatic P 311 9140.4726 0.67471 0.134898
II.PFO.BHZ.00 2023-10-04T06:09:39.05 10.0 positive automatic P 55 9101.4894 -0.561683 0.127494
US.BW06.BHZ.00 2023-10-04T06:09:36.93 10.0 positive automatic P 45 9053.2044 0.586936 0.127341
US.HWUT.BHZ.00 2023-10-04T06:09:34.60 10.0 positive automatic P 47 8987.8476 1.4593 0.1292
US.DUG.BHZ.00 2023-10-04T06:09:34.30 10.0 positive automatic P 48 8985.5388 1.33041 0.127763
NN.PRN.HHZ. 2023-10-04T06:09:34.69 10.0 positive automatic P 52 8987.4924 0.235455 0.127708
US.TPNV.BHZ.00 2023-10-04T06:09:31.28 10.0 positive automatic P 53 8923.8672 0.0635065 0.13262
IU.KIEV.BHZ.00 2023-10-04T06:09:24.77 10.0 positive automatic P 324 8816.9076 0.220559 0.139171
US.ELK.BHZ.00 2023-10-04T06:09:24.65 10.0 positive automatic P 49 8779.5561 1.58145 0.137016
KO.GURO.HHZ. 2023-10-04T06:09:21.21 10.0 positive automatic P 308 8702.8884 2.08223 0.0464801
II.FFC.BHZ.00 2023-10-04T06:09:20.47 10.0 positive automatic P 32 8718.7947 0.293956 0.135701
US.EGMT.BHZ.00 2023-10-04T06:09:20.95 10.0 positive automatic P 40 8714.4546 1.30633 0.135836
US.HLID.BHZ.00 2023-10-04T06:09:19.53 10.0 positive automatic P 46 8675.1162 1.71781 0.135496
BK.CMB.BHZ.00 2023-10-04T06:09:12.65 10.0 positive automatic P 53 8548.2987 0.339355 0.131962
GE.SUMG.BHZ.10 2023-10-04T06:09:11.50 10.0 positive automatic P 0 8521.359 1.19149 0.145445
US.MSO.BHZ.00 2023-10-04T06:09:11.30 10.0 positive automatic P 43 8519.2833 1.43175 0.132862
US.WVOR.BHZ.00 2023-10-04T06:09:07.38 10.0 positive automatic P 49 8441.5167 0.580784 0.146466
IU.GNI.BHZ.00 2023-10-04T06:09:06.47 10.0 positive automatic P 309 8413.4559 0.520912 0.137453
US.BMO.BHZ.00 2023-10-04T06:09:04.93 10.0 positive automatic P 46 8404.2207 0.965574 0.147769
II.KIV.BHZ.00 2023-10-04T06:09:03.32 10.0 positive automatic P 313 8360.6976 0.96534 0.163543
II.UOSS.BHZ.00 2023-10-04T06:08:56.20 10.0 positive automatic P 290 8238.9195 1.1847 0.155589
US.NEW.BHZ.00 2023-10-04T06:08:55.88 10.0 positive automatic P 43 8233.2918 0.88196 0.142254
US.HAWA.BHZ.00 2023-10-04T06:08:54.20 10.0 positive automatic P 45 8170.8987 1.63137 0.156329
II.TAU.BHZ.00 2023-10-04T06:08:52.47 10.0 positive automatic P 176 8182.8978 0.195868 0.144012
GE.DAG.BHZ. 2023-10-04T06:08:41.22 10.0 positive automatic P 355 7981.5771 0.214302 0.158249
US.NLWA.BHZ.00 2023-10-04T06:08:35.38 10.0 positive automatic P 46 7826.6988 0.744297 0.176616
IU.KEV.BHZ.00 2023-10-04T06:08:26.82 10.0 positive automatic P 340 7699.1043 0.887998 0.166295
AU.TOO.BHZ.00 2023-10-04T06:08:19.25 10.0 positive automatic P 177 7581.0669 -0.162274 0.179492
IU.NWAO.BHZ.00 2023-10-04T06:08:14.62 10.0 positive automatic P 202 7521.6153 -0.26601 0.166822
AU.MORW.BHZ. 2023-10-04T06:07:54.87 10.0 positive automatic P 205 7175.5839 -0.327051 0.200353
AU.HTT.BHZ.00 2023-10-04T06:07:52.45 10.0 positive automatic P 183 7120.4058 -0.361705 0.198846
AU.FORT.BHZ.00 2023-10-04T06:07:42.50 10.0 positive automatic P 193 6975.8727 -1.61393 0.219651
II.ARTI.BHZ.00 2023-10-04T06:07:34.67 10.0 positive automatic P 321 6825.1014 -0.360375 0.221459
CN.ATLI.BHZ. 2023-10-04T06:07:33.65 10.0 positive automatic P 35 6781.8669 1.16956 0.209664
II.JZAX.BHZ.00 2023-10-04T06:07:21.82 10.0 positive automatic P 301 6613.7796 -0.254266 0.336017
CN.EAGLY.BHZ. 2023-10-04T06:07:16.35 10.0 positive automatic P 28 6515.3337 0.391329 0.245879
CN.CROWY.BHZ. 2023-10-04T06:07:08.10 10.0 positive automatic P 26 6369.5796 1.36281 0.25427
AU.QLP.BHZ. 2023-10-04T06:07:04.95 10.0 positive automatic P 178 6357.2808 -0.0866029 0.238608
AU.WRKA.BHZ.00 2023-10-04T06:07:04.33 10.0 positive automatic P 195 6351.3645 -1.25821 0.264974
US.EGAK.BHZ.00 2023-10-04T06:07:03.40 10.0 positive automatic P 30 6325.0686 -0.453661 0.267182
AU.EIDS.BHZ. 2023-10-04T06:07:01.32 10.0 positive automatic P 170 6292.1127 -0.0747508 0.257575
IU.MBWA.BHZ.00 2023-10-04T06:06:56.10 10.0 positive automatic P 205 6222.8931 -0.469972 0.139697
II.BORK.BHZ.00 2023-10-04T06:06:51.72 10.0 positive automatic P 316 6134.6592 0.122116 0.361767
IU.COLA.BHZ.00 2023-10-04T06:06:44.05 10.0 positive automatic P 30 6008.7852 -0.0754089 0.292528
II.KDAK.BHZ.00 2023-10-04T06:06:22.92 10.0 positive automatic P 38 5717.5878 -1.40563 0.335052
GE.GSI.BHZ. 2023-10-04T06:06:21.87 10.0 positive automatic P 244 5691.7692 0.0336646 0.304289
AU.FITZ.BHZ. 2023-10-04T06:06:20.58 10.0 positive automatic P 200 5687.418 -0.701921 0.330457
IU.CTAO.BHZ.00 2023-10-04T06:06:18.27 10.0 positive automatic P 175 5650.0221 -0.862119 0.23959
II.KURK.BHZ.00 2023-10-04T06:06:13.97 10.0 positive automatic P 313 5585.7975 -0.474991 0.323127
PS.PSI.BHZ. 2023-10-04T06:06:06.16 10.0 positive automatic P 244 5478.3162 -0.749318 0.295619
IU.MAKZ.BHZ.00 2023-10-04T06:05:58.05 10.0 positive automatic P 307 5357.5482 -0.851851 0.301952
GE.JAGI.BHZ. 2023-10-04T06:05:50.47 10.0 positive automatic P 219 5259.6462 -1.00269 0.341185
MY.IPM.BHZ. 2023-10-04T06:05:45.32 10.0 positive automatic P 244 5172.6222 -0.85201 0.318843
MY.KUM.BHZ. 2023-10-04T06:05:44.52 10.0 positive automatic P 245 5148.957 -0.288008 0.348597
AU.MTN.BHZ.00 2023-10-04T06:05:30.00 10.0 positive automatic P 195 4966.029 -1.63032 0.141084
AU.KDU.BHZ.00 2023-10-04T06:05:26.58 10.0 positive automatic P 193 4917.4554 -1.54414 0.442057
II.KAPI.BHZ.00 2023-10-04T06:05:04.00 10.0 positive automatic P 215 4611.1065 -0.895841 0.161739
IU.CHTO.BHZ.00 2023-10-04T06:04:57.25 10.0 positive automatic P 263 4507.6212 -0.88802 0.519843
IU.BILL.BHZ.00 2023-10-04T06:04:52.12 10.0 positive automatic P 14 4444.9506 -0.866043 0.522173
GE.SANI.BHZ. 2023-10-04T06:04:18.07 10.0 positive automatic P 208 4006.6449 -1.29315 0.773085
II.TLY.BHZ.00 2023-10-04T06:04:11.52 10.0 positive automatic P 318 3896.3553 -0.336691 0.886415
IU.ULN.BHZ.00 2023-10-04T06:03:41.52 10.0 positive automatic P 313 3516.5022 -0.244883 1.06308
IU.TATO.BHZ.00 2023-10-04T06:01:41.57 10.0 positive automatic P 258 2108.223 1.18218 0.930233
IU.INCN.BHZ.00 2023-10-04T06:00:45.32 10.0 positive automatic P 302 1603.3395 1.3896 0.830229
JP.JSU.BHZ. 2023-10-04T05:59:44.90 10.0 positive automatic P 278 1104.0282 2.87744 0.829706
JP.JMN.BHZ. 2023-10-04T05:59:10.45 10.0 positive automatic P 296 838.2276 1.4182 0.930233
JP.JGF.BHZ. 2023-10-04T05:58:50.75 10.0 positive automatic P 323 700.3878 -1.3934 0.869565
G.INU.BHZ.00 2023-10-04T05:58:50.61 10.0 positive automatic P 320 698.6784 -1.42225 1.26386
JP.JCJ.BHZ. 2023-10-04T05:58:15.10 10.0 positive automatic P 178 395.1045 1.66987 0.952381
PS.OGS.BHZ. 2023-10-04T05:58:14.51 10.0 positive automatic P 178 399.4668 0.245167 0.952381
JP.JHJ2.BHZ. 2023-10-04T05:58:05.00 10.0 positive automatic P 323 343.9224 -2.3072 0.97561
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