Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 5.5 on date 23-01-2023 and time 18:17:45 (UTC) in region Indonesia [Sea]

A magnitude Mwp 5.5 earthquake occured in region: Indonesia [Sea], on

  • 23-01-2023 18:17:45 (UTC)
  • 23-01-2023 19:17:45 (UTC +01:00) Italian time
  • 24-01-2023 03:17:45 (UTC +09:00) local time in the region of the earthquake (Pacific/Palau)

and geographic coordinates (lat, lon) 2.5950, 127.0900 at 91 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 5.1
Mwp 5.5
Mwpd 5.8 		2023-01-23
18:17:45		 2.5945 127.09 91 2023-01-23
18:36:37		 Sala Sismica INGV-Roma 113747721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-23 18:17:45
Latitude 2.5945
Longitude 127.0900
Depth (km) 91 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 113747721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 11893
Semi-minor axis of confidence ellipse (meter) 11244
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 66
Circular confidence region, given by single value of horizontal uncertainty (meter) 11530.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96.0627
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.90886
Epicentral distance of station closest to the epicenter (degree) 1.84354
Epicentral distance of station farthest from the epicenter (degree) 92.52262
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 38
Magnitudes information

Mwp:5.5

Field Value
Value 5.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude Mwp
Reference to an origin 113747721
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-01-23 18:36:37

Mwpd:5.8

Field Value
Value 5.8
Uncertainty 0.0
Num. used stations 3
Type of magnitude Mwpd
Reference to an origin 113747721
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-01-23 18:36:37

mb:5.2

Field Value
Value 5.2
Uncertainty 0.2
Num. used stations 31
Type of magnitude mb
Reference to an origin 113747721
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-01-23 18:36:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.QSPA.BHZ.00 2023-01-23T18:30:48.92 10.0 positive automatic PcP 180 92.5226 2.41415 0
GE.KMBO.BHZ.00 2023-01-23T18:30:36.82 10.0 positive automatic PcP 269 89.8847 2.16696 0
KO.GURO.HHZ. 2023-01-23T18:30:09.68 10.0 negative automatic P 308 84.5151 2.24517 0.13802
GE.VOI.BHZ. 2023-01-23T18:29:58.05 10.0 negative automatic P 247 81.9874 -1.66641 0
II.ARTI.BHZ.00 2023-01-23T18:29:22.02 10.0 positive automatic P 328 76.1967 -0.671625 0.20734
IU.TIXI.BHZ.00 2023-01-23T18:28:40.07 10.0 positive automatic P 1 69.0459 -0.195021 0.292133
II.SIMI.BHZ.00 2023-01-23T18:28:06.40 10.0 positive automatic P 312 63.8476 -0.972289 0.353956
II.KURK.BHZ.00 2023-01-23T18:27:59.52 10.0 positive automatic P 328 62.9701 -1.84747 0.369979
II.AAK.BHZ.00 2023-01-23T18:27:51.97 10.0 negative automatic P 318 61.5033 0.143725 0.348645
IU.MA2.BHZ.00 2023-01-23T18:27:40.42 10.0 positive automatic P 14 59.8437 0.0814234 0.369616
IU.YAK.BHZ.00 2023-01-23T18:27:35.82 10.0 positive automatic P 1 59.4657 -1.88681 0.366675
IU.MAKZ.BHZ.00 2023-01-23T18:27:32.20 10.0 positive automatic P 326 58.9645 -2.13807 0.416411
IU.ULN.BHZ.00 2023-01-23T18:26:15.97 10.0 negative automatic P 342 48.4539 -1.87169 0.59316
AU.TOO.BHZ.00 2023-01-23T18:25:42.15 10.0 negative automatic P 159 43.6375 2.28344 0.655386
JP.JKA.BHZ. 2023-01-23T18:25:40.80 10.0 positive automatic pP 18 40.9761 1.12951 0
G.CAN.BHZ.00 2023-01-23T18:25:38.25 10.0 positive automatic P 154 43.1045 2.65119 0.688624
AU.ARMA.BHZ. 2023-01-23T18:25:15.90 10.0 negative automatic P 147 40.4690 1.70343 0.738274
IU.NWAO.BHZ.00 2023-01-23T18:24:44.37 10.0 positive automatic P 194 36.7222 1.65003 0.821618
IU.MAJO.BHZ.00 2023-01-23T18:24:29.17 10.0 positive automatic P 15 35.4642 -2.82885 0.837317
AU.MORW.BHZ. 2023-01-23T18:24:15.77 10.0 negative automatic P 198 33.3859 1.72318 0.890883
AU.QLP.BHZ. 2023-01-23T18:24:15.12 10.0 positive automatic P 152 33.5482 -0.323108 0.898272
AU.FORT.BHZ.00 2023-01-23T18:24:14.20 10.0 positive automatic P 178 33.3848 0.185652 0.849945
AU.WRKA.BHZ.00 2023-01-23T18:23:23.30 10.0 positive automatic P 178 27.6556 -0.310054 0.963855
MY.IPM.BHZ. 2023-01-23T18:23:12.42 10.0 negative automatic P 275 26.0797 3.0013 0.952381
IU.MBWA.BHZ.00 2023-01-23T18:22:58.97 10.0 positive automatic P 197 24.8212 0.955135 0.909091
II.WRAB.BHZ.00 2023-01-23T18:22:45.95 10.0 positive automatic P 163 23.6307 -1.25923 0.909091
MY.KOM.BHZ. 2023-01-23T18:22:42.87 10.0 positive automatic P 269 23.2385 -0.698296 0.615385
AU.FITZ.BHZ. 2023-01-23T18:22:17.45 10.0 positive automatic P 184 20.7449 -0.221513 0.941176
GE.JAGI.BHZ. 2023-01-23T18:21:36.07 10.0 positive automatic P 229 16.9948 -0.25908 0.615385
AU.KDU.BHZ.00 2023-01-23T18:21:25.10 10.0 negative automatic P 161 16.1888 -1.26453 0.97561
AU.MTN.BHZ.00 2023-01-23T18:21:21.88 10.0 positive automatic P 166 15.9508 -1.54099 0.963855
GE.GENI.BHZ. 2023-01-23T18:21:02.42 10.0 negative automatic P 112 14.0644 3.01218 0.47619
GE.SOEI.BHZ. 2023-01-23T18:20:43.12 10.0 positive automatic P 193 12.6652 1.88465 0
GE.MMRI.BHZ. 2023-01-23T18:20:35.07 10.0 positive automatic P 203 12.2274 -0.203324 0
GE.FAKI.BHZ. 2023-01-23T18:19:34.07 10.0 positive automatic P 137 7.5493 2.36321 0.97561
GE.LUWI.BHZ. 2023-01-23T18:19:04.82 10.0 positive automatic P 230 5.6442 -0.927526 0.615385
GE.SANI.BHZ. 2023-01-23T18:18:51.07 10.0 positive automatic P 193 4.7727 -2.836 0.465116
GE.TNTI.BHZ. 2023-01-23T18:18:12.17 10.0 positive automatic P 171 1.8435 -2.4204 0.851064
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