Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 5.5 on date 15-03-2023 and time 21:25:41 (UTC) in region Talaud Islands, Indonesia [Sea: Indonesia]

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

  • 15-03-2023 21:25:41 (UTC)
  • 15-03-2023 22:25:41 (UTC +01:00) Italian time
  • 16-03-2023 06:25:41 (UTC +09:00) local time in the region of the earthquake (Pacific/Palau)

and geographic coordinates (lat, lon) 4.6510, 127.0370 at 72 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 5.4
Mwp 5.5
Mwpd 5.8 		2023-03-15
21:25:41		 4.6512 127.037 72 2023-03-15
21:38:21		 Sala Sismica INGV-Roma 115407121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-15 21:25:41
Latitude 4.6512
Longitude 127.0370
Depth (km) 72 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 115407121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6626
Semi-minor axis of confidence ellipse (meter) 2933
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 5682.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124.403
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 58
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.35745
Epicentral distance of station closest to the epicenter (degree) 2.81991
Epicentral distance of station farthest from the epicenter (degree) 63.13772
Number of stations at which the event was observed 55
Number of stations from which data was used for origin computation 55
Magnitudes information

Mwpd:5.8

Field Value
Value 5.8
Uncertainty 0.1
Num. used stations 2
Type of magnitude Mwpd
Reference to an origin 115407121
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-03-15 21:38:21

Mwp:5.5

Field Value
Value 5.5
Uncertainty 0.2
Num. used stations 13
Type of magnitude Mwp
Reference to an origin 115407121
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-03-15 21:38:21

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 45
Type of magnitude mb
Reference to an origin 115407121
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-03-15 21:38:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
NZ.KHZ.HHZ.10 2023-03-15T21:36:01.38 10.0 negative automatic P 143 63.1377 0.478921 0.376608
II.SIMI.BHZ.00 2023-03-15T21:35:56.12 10.0 positive automatic P 312 62.4315 -0.321726 0.386456
II.KURK.BHZ.00 2023-03-15T21:35:47.57 10.0 positive automatic P 327 61.2060 -0.436162 0.403849
II.AAK.BHZ.00 2023-03-15T21:35:39.97 10.0 negative automatic P 318 59.9409 0.321521 0
IU.MA2.BHZ.00 2023-03-15T21:35:24.67 10.0 negative automatic P 14 57.8587 -0.334653 0.404032
IU.MAKZ.BHZ.00 2023-03-15T21:35:20.25 10.0 positive automatic P 325 57.2461 -0.502483 0.45709
IU.YAK.BHZ.00 2023-03-15T21:35:20.87 10.0 negative automatic P 1 57.4112 -0.954458 0.419232
IN.MNC.HHZ. 2023-03-15T21:34:55.77 10.0 positive automatic P 277 53.7173 0.444025 0.503701
AU.MILA.BHZ.00 2023-03-15T21:34:02.73 10.0 positive automatic P 156 46.5231 1.66946 0.626705
IU.ULN.BHZ.00 2023-03-15T21:34:01.02 10.0 positive automatic P 342 46.4833 0.135698 0.598892
GE.MALK.BHZ. 2023-03-15T21:33:59.22 10.0 positive automatic P 277 46.3170 -0.107474 0.551558
GE.HALK.BHZ. 2023-03-15T21:33:58.25 10.0 positive automatic P 274 46.1604 0.152043 0.60435
II.PALK.BHZ.00 2023-03-15T21:33:57.90 10.0 positive automatic P 276 46.1381 -0.0878168 0.578435
AU.TOO.BHZ.00 2023-03-15T21:33:55.45 10.0 positive automatic P 159 45.5774 1.85689 0.643518
G.CAN.BHZ.00 2023-03-15T21:33:50.70 10.0 positive automatic P 154 44.9758 1.8468 0.610706
AU.ARMA.BHZ. 2023-03-15T21:33:28.27 10.0 negative automatic P 148 42.2248 1.43814 0.704911
JP.JKA.BHZ. 2023-03-15T21:33:22.65 10.0 negative automatic sP 19 39.0400 -3.19356 0
II.ERM.BHZ.00 2023-03-15T21:33:09.67 10.0 positive automatic P 19 40.0305 1.02831 0.746606
IN.SHL.HHZ. 2023-03-15T21:33:04.48 10.0 positive automatic P 305 39.6561 -1.04818 0.140717
IU.NWAO.BHZ.00 2023-03-15T21:32:57.92 10.0 positive automatic P 193 38.7092 0.214339 0.791129
JP.JTM.BHZ. 2023-03-15T21:32:53.80 10.0 positive automatic P 17 38.2691 -0.174065 0.745446
AU.EIDS.BHZ. 2023-03-15T21:32:51.00 10.0 positive automatic P 143 38.0269 0.0452494 0.767452
AU.QLP.BHZ. 2023-03-15T21:32:30.10 10.0 positive automatic P 153 35.3916 0.535839 0.838698
AU.FORT.BHZ.00 2023-03-15T21:32:29.75 10.0 positive automatic P 178 35.4420 -0.234596 0.827813
AU.MORW.BHZ. 2023-03-15T21:32:28.97 10.0 positive automatic P 197 35.3345 -0.113288 0.839864
IU.MAJO.BHZ.00 2023-03-15T21:32:10.62 10.0 positive automatic P 16 33.5010 -2.64493 0.784387
JP.JGF.BHZ. 2023-03-15T21:32:02.00 10.0 positive automatic P 16 32.3814 -1.52553 0.901322
G.INU.BHZ.00 2023-03-15T21:31:59.11 10.0 positive automatic P 15 32.0543 -1.47623 0.887139
IU.CTAO.BHZ.00 2023-03-15T21:31:54.55 10.0 positive automatic P 143 31.1216 2.11502 0.939381
IU.CHTO.BHZ.00 2023-03-15T21:31:49.35 10.0 positive automatic P 300 30.8554 -0.75319 0.94518
JP.JMN.BHZ. 2023-03-15T21:31:40.55 10.0 positive automatic P 12 29.7669 0.0391592 0.952381
AU.WRKA.BHZ.00 2023-03-15T21:31:39.83 10.0 positive automatic P 178 29.7126 -0.219906 0.833333
GE.GSI.BHZ. 2023-03-15T21:31:37.52 10.0 positive automatic P 264 29.6052 -1.48031 0.930233
RM.SLV.BHZ. 2023-03-15T21:31:26.17 10.0 negative automatic P 309 27.9538 1.73381 0.952381
IU.MBWA.BHZ.00 2023-03-15T21:31:14.17 10.0 positive automatic P 195 26.7849 0.264098 0.963855
MY.KUM.BHZ. 2023-03-15T21:31:09.42 10.0 positive automatic P 273 26.2933 -0.0417687 0.930233
GE.PMG.BHZ.00 2023-03-15T21:31:07.02 10.0 negative automatic pP 125 24.4863 -2.94621 0
MY.IPM.BHZ. 2023-03-15T21:31:06.02 10.0 positive automatic P 271 25.9271 -0.16538 0.909091
MY.KOM.BHZ. 2023-03-15T21:30:42.82 10.0 positive automatic P 264 23.3257 0.325886 0.833333
AU.FITZ.BHZ. 2023-03-15T21:30:35.70 10.0 positive automatic P 183 22.7939 -1.60791 0.941176
JP.YOJ.BHZ. 2023-03-15T21:30:11.00 10.0 positive automatic P 349 20.1901 1.50349 0.952381
GE.SMRI.BHZ. 2023-03-15T21:30:10.87 10.0 negative automatic P 235 20.2786 0.389111 0.909091
RM.DLV.BHZ. 2023-03-15T21:30:05.77 10.0 positive automatic P 293 19.7446 0.904719 0.888889
GE.JAGI.BHZ. 2023-03-15T21:29:48.97 10.0 positive automatic P 224 18.3644 -0.644184 0.909091
AU.KDU.BHZ.00 2023-03-15T21:29:45.15 10.0 positive automatic P 163 18.1591 -2.19036 0.941176
AU.MTN.BHZ.00 2023-03-15T21:29:42.30 10.0 positive automatic P 167 17.9609 -2.87639 0.879121
GE.SOEI.BHZ. 2023-03-15T21:29:04.77 10.0 positive automatic P 191 14.6678 0.26088 0.869565
GE.MMRI.BHZ. 2023-03-15T21:28:55.67 10.0 positive automatic P 200 14.1219 -1.577 0.909091
GE.BKB.BHZ. 2023-03-15T21:28:26.02 10.0 positive automatic P 241 11.6459 2.02393 0.43956
GE.BNDI.BHZ. 2023-03-15T21:27:57.82 10.0 positive automatic P 163 9.6099 1.60164 0.909091
GE.FAKI.BHZ. 2023-03-15T21:27:51.17 10.0 positive automatic P 145 9.1881 0.689139 0.97561
GE.LUWI.BHZ. 2023-03-15T21:27:23.27 10.0 positive automatic P 217 7.1110 1.18828 0.909091
GE.SANI.BHZ. 2023-03-15T21:27:15.12 10.0 positive automatic P 189 6.7820 -2.47132 0.888889
GE.TNTI.BHZ. 2023-03-15T21:26:38.72 10.0 positive automatic P 175 3.8931 0.584391 0.952381
IU.DAV.BHZ.00 2023-03-15T21:26:23.17 10.0 negative automatic P 329 2.8199 -0.371823 0.941176
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