Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 5.7 on date 16-02-2023 and time 05:37:06 (UTC) in region Vanuatu Islands [Sea: Vanuatu]

A magnitude Mwp 5.7 earthquake occured in region: Vanuatu Islands [Sea: Vanuatu], on

  • 16-02-2023 05:37:06 (UTC)
  • 16-02-2023 06:37:06 (UTC +01:00) Italian time
  • 16-02-2023 16:37:06 (UTC +11:00) local time in the region of the earthquake (Pacific/Efate)

and geographic coordinates (lat, lon) -15.0190, 167.0510 at 31 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 5.7
Mwpd 5.9 		2023-02-16
05:37:06		 -15.0187 167.051 31 2023-02-16
05:51:43		 Sala Sismica INGV-Roma 114475231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-16 05:37:06
Latitude -15.0187
Longitude 167.0510
Depth (km) 31 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 114475231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 14333
Semi-minor axis of confidence ellipse (meter) 7336
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 147
Circular confidence region, given by single value of horizontal uncertainty (meter) 12905.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61.3334
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.32183
Epicentral distance of station closest to the epicenter (degree) 0.45293
Epicentral distance of station farthest from the epicenter (degree) 87.54634
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 37
Magnitudes information

Mwp:5.7

Field Value
Value 5.7
Uncertainty 0.1
Num. used stations 6
Type of magnitude Mwp
Reference to an origin 114475231
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-02-16 05:51:43

Mwpd:5.9

Field Value
Value 5.9
Uncertainty 0.1
Num. used stations 5
Type of magnitude Mwpd
Reference to an origin 114475231
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-02-16 05:51:43

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 27
Type of magnitude mb
Reference to an origin 114475231
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-02-16 05:51:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
US.NLWA.BHZ.00 2023-02-16T05:49:49.25 10.0 positive automatic P 39 9717.6393 -0.576462 0.108308
IU.COLA.BHZ.00 2023-02-16T05:49:43.32 10.0 negative automatic P 18 9640.0281 -3.04733 0
BK.CMB.BHZ.00 2023-02-16T05:49:41.77 10.0 negative automatic P 49 9554.8578 -0.916566 0.124887
BK.SAO.BHZ.00 2023-02-16T05:49:36.47 10.0 negative automatic P 50 9413.9433 0.169814 0.130443
IU.YAK.BHZ.00 2023-02-16T05:49:22.07 10.0 positive automatic P 343 9153.2709 -2.15985 0.137063
IU.MA2.BHZ.00 2023-02-16T05:48:44.97 10.0 positive automatic P 352 8408.6385 -2.62518 0.207695
IU.CHTO.BHZ.00 2023-02-16T05:48:44.42 10.0 positive automatic PcP 295 8334.4239 0.647652 0.205068
RM.SLV.BHZ. 2023-02-16T05:48:26.42 10.0 positive automatic P 299 7970.3106 1.91607 0.248769
MY.IPM.BHZ. 2023-02-16T05:48:02.72 10.0 positive automatic P 281 7572.2757 0.28256 0.303051
IU.YSS.BHZ.00 2023-02-16T05:47:45.50 10.0 positive automatic P 342 7292.7555 -0.912657 0.326979
IU.SBA.BHZ.00 2023-02-16T05:47:28.02 10.0 positive automatic P 180 6973.8858 0.440304 0.355918
GT.VNDA.BHZ.00 2023-02-16T05:47:25.08 10.0 positive automatic P 181 6943.1832 -0.671638 0.343893
JP.JTM.BHZ. 2023-02-16T05:47:11.85 10.0 positive automatic P 338 6747.2238 -2.00735 0.366314
JP.JMN.BHZ. 2023-02-16T05:46:54.15 10.0 positive automatic P 328 6448.9446 -1.23576 0.440068
IU.MAJO.BHZ.00 2023-02-16T05:46:54.47 10.0 positive automatic P 333 6471.9105 -2.33615 0.437011
JP.JGF.BHZ. 2023-02-16T05:46:51.75 10.0 positive automatic P 332 6427.4661 -2.28426 0.432635
JP.JOW.BHZ. 2023-02-16T05:46:43.20 10.0 negative automatic P 318 6248.8116 0.607641 0.456289
GE.JAGI.BHZ. 2023-02-16T05:46:10.27 10.0 positive automatic P 271 5781.6348 -1.65692 0.367347
AU.MORW.BHZ. 2023-02-16T05:45:47.57 10.0 positive automatic P 244 5430.4419 -0.488321 0.600624
IU.NWAO.BHZ.00 2023-02-16T05:45:43.27 10.0 positive automatic P 239 5371.5675 -0.727104 0.595421
IU.MBWA.BHZ.00 2023-02-16T05:45:19.60 10.0 negative automatic P 255 5021.3403 0.299011 0.65097
G.PPTF.BHZ.00 2023-02-16T05:44:51.70 10.0 negative automatic P 100 4620.9078 1.39472 0.700831
AU.FORT.BHZ.00 2023-02-16T05:44:27.85 10.0 positive automatic P 239 4324.6488 -0.269675 0.787587
AU.WRKA.BHZ.00 2023-02-16T05:44:16.00 10.0 positive automatic P 248 4175.5203 -0.89334 0.795337
GE.FAKI.BHZ. 2023-02-16T05:44:05.97 10.0 positive automatic P 286 4036.404 -0.190556 0.378677
AU.MTN.BHZ.00 2023-02-16T05:43:54.10 10.0 positive automatic P 269 3872.9121 0.577805 0.850499
AU.KDU.BHZ.00 2023-02-16T05:43:42.53 10.0 negative automatic P 270 3731.6868 0.0398432 0.89826
II.WRAB.BHZ.00 2023-02-16T05:43:22.65 10.0 positive automatic P 256 3498.0762 -1.46891 0.889614
G.CAN.BHZ.00 2023-02-16T05:42:36.60 10.0 positive automatic P 215 2881.6377 1.88003 0.952381
AU.QLP.BHZ. 2023-02-16T05:42:18.82 10.0 positive automatic P 238 2686.1334 0.188626 0.963855
AU.ARMA.BHZ. 2023-02-16T05:41:45.65 10.0 positive automatic P 220 2321.4873 0.628208 0.952381
IU.CTAO.BHZ.00 2023-02-16T05:41:40.87 10.0 positive automatic P 253 2269.6059 1.04192 0.963855
GE.PMG.BHZ.00 2023-02-16T05:41:39.47 10.0 positive automatic P 284 2245.0527 2.09262 0.909091
AU.EIDS.BHZ. 2023-02-16T05:41:15.07 10.0 negative automatic P 233 2018.5239 0.0508046 0.898876
IU.FUNA.BHZ.00 2023-02-16T05:40:15.80 10.0 negative automatic P 63 1502.9289 0.891696 0.963855
IU.HNR.BHZ.00 2023-02-16T05:39:12.55 10.0 negative automatic P 308 988.3107 1.04764 0.930233
G.SANVU.BHZ.00 2023-02-16T05:37:13.15 10.0 positive automatic P 161 50.2719 -1.39171 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