Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.4 on date 16-08-2023 and time 12:47:43 (UTC) in region Vanuatu Islands [Sea: Vanuatu]

A magnitude Mwp 6.4 earthquake occured in region: Vanuatu Islands [Sea: Vanuatu], on

  • 16-08-2023 12:47:43 (UTC)
  • 16-08-2023 14:47:43 (UTC +02:00) Italian time
  • 16-08-2023 23:47:43 (UTC +11:00) local time in the region of the earthquake (Pacific/Efate)

and geographic coordinates (lat, lon) -13.7600, 167.2240 at 215 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 5.6
Mwp 6.4
Mwpd 6.4 		2023-08-16
12:47:43		 -13.7602 167.224 215 2023-08-16
13:01:03		 Sala Sismica INGV-Roma 120182221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-16 12:47:43
Latitude -13.7602
Longitude 167.2240
Depth (km) 215 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 120182221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 26129117
Semi-minor axis of confidence ellipse (meter) 21181557
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 345
Circular confidence region, given by single value of horizontal uncertainty (meter) 27143400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49.7639
Number of associated phases, regardless of their use for origin computation 73
Number of defining phases 73
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.03498
Epicentral distance of station closest to the epicenter (degree) 8.33360
Epicentral distance of station farthest from the epicenter (degree) 70.58879
Number of stations at which the event was observed 73
Number of stations from which data was used for origin computation 73
Magnitudes information

Mwpd:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 65
Type of magnitude Mwpd
Reference to an origin 120182221
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-08-16 13:01:03

Mwp:6.4

Field Value
Value 6.4
Uncertainty 0.2
Num. used stations 60
Type of magnitude Mwp
Reference to an origin 120182221
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-08-16 13:01:03

mb:5.6

Field Value
Value 5.6
Uncertainty 0.2
Num. used stations 70
Type of magnitude mb
Reference to an origin 120182221
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-08-16 13:01:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GE.GSI.BHZ. 2023-08-16T12:58:34.87 10.0 positive automatic P 276 7835.3568 0.758001 0.153097
IU.PET.BHZ.00 2023-08-16T12:58:12.42 10.0 positive automatic P 354 7457.7459 0.217138 0.33085
IU.ADK.BHZ.00 2023-08-16T12:58:11.60 10.0 positive automatic P 11 7449.0435 -0.127795 0.303787
AT.SMY.BHZ. 2023-08-16T12:58:10.16 10.0 positive automatic P 5 7409.5053 0.287305 0.185449
MY.KOM.BHZ. 2023-08-16T12:57:58.42 10.0 positive automatic P 279 7179.6909 1.01857 0.191258
IU.YSS.BHZ.00 2023-08-16T12:57:56.80 10.0 positive automatic P 342 7165.7604 0.95354 0.342423
IU.CASY.BHZ.00 2023-08-16T12:57:53.72 10.0 positive automatic P 202 7146.2355 -1.26762 0.0509625
IU.INCN.BHZ.00 2023-08-16T12:57:51.92 10.0 positive automatic P 325 7088.3823 1.13324 0.366594
RM.DLV.BHZ. 2023-08-16T12:57:51.07 10.0 positive automatic P 291 7065.1833 0.18654 0.179987
PS.TJN.BHZ. 2023-08-16T12:57:43.51 10.0 positive automatic P 324 6955.3488 -0.290752 0.310821
JP.JKA.BHZ. 2023-08-16T12:57:40.60 10.0 positive automatic P 340 6890.4027 0.64257 0.22249
AU.XMI.BHZ.00 2023-08-16T12:57:28.38 10.0 positive automatic P 266 6671.4996 1.64315 0.22915
II.ERM.BHZ.00 2023-08-16T12:57:26.62 10.0 positive automatic P 340 6661.8537 0.370848 0.2127
JP.JTU.BHZ. 2023-08-16T12:57:26.65 10.0 positive automatic P 324 6680.0022 -1.30375 0.220946
JP.JTM.BHZ. 2023-08-16T12:57:23.65 10.0 positive automatic P 337 6625.3569 0.13424 0.315669
IU.TATO.BHZ.00 2023-08-16T12:57:19.32 10.0 positive automatic P 311 6554.7498 -0.0710396 0.229473
JP.YOJ.BHZ. 2023-08-16T12:57:09.20 10.0 positive automatic P 311 6398.4174 -0.488962 0.30828
JP.JSU.BHZ. 2023-08-16T12:57:08.05 10.0 positive automatic P 323 6369.3354 0.733895 0.18734
JP.JMN.BHZ. 2023-08-16T12:57:06.35 10.0 positive automatic P 327 6341.4522 0.32674 0.318666
IU.MAJO.BHZ.00 2023-08-16T12:57:06.17 10.0 positive automatic P 332 6356.4039 0.502274 0.238715
G.INU.BHZ.00 2023-08-16T12:57:03.76 10.0 positive automatic P 331 6307.9302 0.654324 0.302255
JP.JGF.BHZ. 2023-08-16T12:57:03.90 10.0 positive automatic P 331 6313.8132 0.35702 0.440787
PS.ISG.BHZ. 2023-08-16T12:57:03.86 10.0 positive automatic P 312 6293.9664 0.65024 0.273168
GE.SMRI.BHZ. 2023-08-16T12:57:00.82 10.0 positive automatic P 271 6230.6187 0.700148 0.293955
JP.JSG.BHZ. 2023-08-16T12:56:56.40 10.0 positive automatic P 331 6186.4407 0.857144 0.253288
JP.JOW.BHZ. 2023-08-16T12:56:55.60 10.0 positive automatic P 317 6158.5242 1.01805 0.463458
JP.JHJ2.BHZ. 2023-08-16T12:56:41.35 10.0 positive automatic P 331 5958.5466 0.377227 0.192255
JP.JMZ.BHZ. 2023-08-16T12:56:36.10 10.0 positive automatic P 318 5867.3379 0.64575 0.280178
GE.JAGI.BHZ. 2023-08-16T12:56:30.92 10.0 positive automatic P 270 5799.3393 0.892427 0.350125
G.TAOE.BHZ.00 2023-08-16T12:56:28.42 10.0 positive automatic P 91 5743.5063 -0.294631 0.308486
GE.BKB.BHZ. 2023-08-16T12:56:27.62 10.0 positive automatic P 280 5698.7733 1.94377 0.333155
IU.POHA.BHZ.00 2023-08-16T12:56:12.72 10.0 positive automatic P 48 5512.1601 0.141782 0.351878
AU.MORW.BHZ. 2023-08-16T12:56:11.30 10.0 positive automatic P 243 5508.7857 0.266387 0.174058
G.KIP.BHZ.00 2023-08-16T12:56:07.97 10.0 positive automatic P 45 5439.7215 0.536788 0.340785
IU.NWAO.BHZ.00 2023-08-16T12:56:07.47 10.0 positive automatic P 238 5460.2898 -0.290258 0.493784
II.KAPI.BHZ.00 2023-08-16T12:55:57.20 10.0 positive automatic P 276 5278.8936 1.25947 0.36187
JP.JCJ.BHZ. 2023-08-16T12:55:55.05 10.0 positive automatic P 329 5276.5959 0.683273 0.370609
GE.LUWI.BHZ. 2023-08-16T12:55:43.17 10.0 positive automatic P 282 5080.1259 1.29867 0.302483
IU.MBWA.BHZ.00 2023-08-16T12:55:42.32 10.0 positive automatic P 254 5077.0512 0.931891 0.41479
IU.MIDW.BHZ.00 2023-08-16T12:55:35.62 10.0 positive automatic P 19 4944.5061 3.12931 0.422074
GE.SANI.BHZ. 2023-08-16T12:55:16.02 10.0 positive automatic P 282 4706.178 1.46705 0.482724
GE.SOEI.BHZ. 2023-08-16T12:55:15.37 10.0 positive automatic P 271 4683.2343 1.33851 0.166398
GE.TNTI.BHZ. 2023-08-16T12:55:13.77 10.0 positive automatic P 287 4669.4592 1.34079 0.48048
G.PPTF.BHZ.00 2023-08-16T12:55:10.75 10.0 positive automatic P 101 4627.8453 -0.706356 0.318747
AU.MCQ.BHZ.00 2023-08-16T12:55:04.75 10.0 positive automatic P 187 4578.6057 -1.33137 0.465202
AU.FORT.BHZ.00 2023-08-16T12:54:53.23 10.0 positive automatic P 238 4413.2379 -0.70175 0.785406
AU.WRKA.BHZ.00 2023-08-16T12:54:40.73 10.0 positive automatic P 247 4246.0608 -0.811543 0.832573
GE.FAKI.BHZ. 2023-08-16T12:54:24.42 10.0 positive automatic P 284 4017.9891 0.52484 0.803055
AU.MTN.BHZ.00 2023-08-16T12:54:15.23 10.0 positive automatic P 267 3896.2443 0.340408 0.439067
AU.KDU.BHZ.00 2023-08-16T12:54:04.20 10.0 positive automatic P 268 3753.6759 0.33641 1.01014
II.TAU.BHZ.00 2023-08-16T12:54:02.72 10.0 positive automatic P 207 3753.1209 -1.58223 0.943086
IU.WAKE.BHZ.00 2023-08-16T12:53:57.12 10.0 positive automatic P 359 3668.2059 -0.0963752 0.732912
IU.RAR.BHZ.00 2023-08-16T12:53:50.70 10.0 positive automatic P 108 3582.9135 -1.00763 0.823109
AU.HTT.BHZ.00 2023-08-16T12:53:50.85 10.0 positive automatic P 228 3591.3273 -0.478586 1.08213
AU.TOO.BHZ.00 2023-08-16T12:53:35.75 10.0 positive automatic P 215 3403.7595 -0.792353 1.16173
PS.JAY.BHZ. 2023-08-16T12:53:16.81 10.0 positive automatic P 291 3165.0762 -0.753047 0.928976
G.CAN.BHZ.00 2023-08-16T12:53:03.85 10.0 positive automatic P 214 3007.1232 -1.54581 1.25788
AU.QLP.BHZ. 2023-08-16T12:52:45.00 10.0 positive automatic P 236 2778.4299 -0.221671 0.201678
AU.RIV.BHZ. 2023-08-16T12:52:44.02 10.0 positive automatic P 213 2752.8555 -1.40195 1.26936
AU.COEN.BHZ.00 2023-08-16T12:52:32.43 10.0 positive automatic P 267 2590.629 1.28672 0.6339
II.KWJN.BHZ.00 2023-08-16T12:52:29.25 10.0 positive automatic P 1 2558.3835 0.802015 1.0077
AU.MANU.BHZ.01 2023-08-16T12:52:27.55 10.0 positive automatic P 299 2537.571 0.789783 1.32787
AU.NIUE.BHZ.00 2023-08-16T12:52:22.83 10.0 positive automatic P 107 2500.8633 -0.91045 0.964834
AU.ARMA.BHZ. 2023-08-16T12:52:18.47 10.0 positive automatic P 218 2441.667 -1.01286 1.39576
IU.CTAO.BHZ.00 2023-08-16T12:52:09.07 10.0 positive automatic P 250 2332.4874 -0.873513 1.43972
GE.PMG.BHZ.00 2023-08-16T12:52:00.82 10.0 positive automatic P 280 2234.097 0.0640618 0.909091
AU.LHI.BHZ.00 2023-08-16T12:51:49.48 10.0 positive automatic P 202 2139.2586 -1.0721 1.19219
AU.EIDS.BHZ. 2023-08-16T12:51:49.25 10.0 positive automatic P 230 2120.1555 0.182229 1.49913
AU.RABL.BHZ.00 2023-08-16T12:51:34.93 10.0 positive automatic P 301 1961.4366 1.65994 1.30398
AU.NFK.BHZ.00 2023-08-16T12:51:04.08 10.0 positive automatic P 178 1697.9448 -3.07656 0.276003
IU.FUNA.BHZ.00 2023-08-16T12:50:37.60 10.0 positive automatic P 67 1426.8606 0.537666 1.31695
II.MSVF.BHZ.00 2023-08-16T12:50:17.32 10.0 positive automatic P 112 1238.0607 0.690309 0.888889
IU.HNR.BHZ.00 2023-08-16T12:49:39.95 10.0 positive automatic P 300 925.0296 0.00924769 1.20926
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