Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.1 on date 22-12-2018 and time 14:25:04 (UTC) in region Vanuatu Islands [Sea: Vanuatu]

A magnitude Mwp 6.1 earthquake occured in region: Vanuatu Islands [Sea: Vanuatu], on

  • 22-12-2018 14:25:04 (UTC)
  • 22-12-2018 15:25:04 (UTC +01:00) Italian time
  • 23-12-2018 01:25:04 (UTC +11:00) local time in the region of the earthquake (Pacific/Efate)

and geographic coordinates (lat, lon) -13.4, 166.77 at 67 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 mb 5.5
Mwp 6.1
Mwpd 6.1 		2018-12-22
14:25:04		 -13.4 166.77 67 2018-12-22
14:50:17		 Sala Sismica INGV-Roma 64089641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-22 14:25:04
Latitude -13.40
Longitude 166.77
Depth (km) 67 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 64089641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 12828
Semi-minor axis of confidence ellipse (meter) 7296
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
Circular confidence region, given by single value of horizontal uncertainty (meter) 10595.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53.0472
Number of associated phases, regardless of their use for origin computation 93
Number of defining phases 93
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.21805
Epicentral distance of station closest to the epicenter (degree) 7.77373
Epicentral distance of station farthest from the epicenter (degree) 96.22936
Number of stations at which the event was observed 87
Number of stations from which data was used for origin computation 87
Magnitudes information

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 39
Type of magnitude Mwpd
Reference to an origin 64089641
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-12-22 14:50:17

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 42
Type of magnitude Mwp
Reference to an origin 64089641
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-12-22 14:50:17

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 61
Type of magnitude mb
Reference to an origin 64089641
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-12-22 14:50:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.PMSA.BHZ.00 2018-12-22T14:38:41.52 10.0 positive automatic sP 161 92.9901 7.21667 0
IU.MAKZ.BHZ.00 2018-12-22T14:38:23.50 10.0 positive automatic P 317 96.2294 -0.803325 0.0526069
GE.SNAA.BHZ. 2018-12-22T14:38:16.01 10.0 positive automatic P 183 94.6352 -1.05937 0.0651234
GE.KAAM.BHZ. 2018-12-22T14:38:14.57 10.0 negative automatic P 270 93.7848 1.54672 0.0668703
CN.INK.BHZ. 2018-12-22T14:38:05.28 10.0 negative automatic P 19 91.9417 0.742824 0.0776604
US.DUG.BHZ.00 2018-12-22T14:38:04.60 10.0 negative automatic P 49 91.4772 1.96939 0.0814331
US.HLID.BHZ.00 2018-12-22T14:38:01.58 10.0 negative automatic P 45 91.3127 -0.340938 0.0779838
US.NEW.BHZ.00 2018-12-22T14:38:00.08 10.0 positive automatic P 40 90.9955 -0.197609 0.0854561
UW.BRAN.BHZ. 2018-12-22T14:37:55.43 10.0 negative automatic P 42 90.1732 -1.08793 0.0908378
US.ELK.BHZ.00 2018-12-22T14:37:54.78 10.0 negative automatic P 48 89.876 -0.536377 0.0950332
AU.HTT.BHZ. 2018-12-22T14:37:54.32 10.0 negative automatic ScP 227 32.2749 4.93493 0
US.BMO.BHZ.00 2018-12-22T14:37:53.18 10.0 negative automatic P 43 89.7506 -1.36876 0.0797565
NN.PRN.HHZ. 2018-12-22T14:37:51.54 10.0 positive automatic P 51 88.9914 0.495401 0.0936343
US.HAWA.BHZ.00 2018-12-22T14:37:50.38 10.0 positive automatic P 41 88.819 0.330361 0.102441
GE.MALK.BHZ. 2018-12-22T14:37:49.27 10.0 positive automatic P 279 88.3096 1.66583 0.0968836
II.PALK.BHZ.00 2018-12-22T14:37:47.77 10.0 negative automatic PcP 278 87.8877 0.323871 0
IU.TIXI.BHZ.00 2018-12-22T14:37:47.37 10.0 positive automatic P 349 88.7429 -2.26179 0.10059
GE.HALK.BHZ. 2018-12-22T14:37:46.05 10.0 positive automatic P 277 87.6264 1.6844 0.111133
US.TPNV.BHZ.00 2018-12-22T14:37:46.35 10.0 positive automatic P 51 87.9416 0.2327 0.105049
US.WVOR.BHZ.00 2018-12-22T14:37:45.20 10.0 positive automatic P 45 88.0258 -1.27375 0.080419
US.EGAK.BHZ.00 2018-12-22T14:37:41.70 10.0 positive automatic P 20 87.409 -1.65449 0.114114
II.PFO.BHZ.00 2018-12-22T14:37:41.47 10.0 positive automatic P 54 86.7238 1.26339 0.115204
BK.CMB.BHZ.00 2018-12-22T14:37:32.17 10.0 negative automatic P 49 85.2214 -0.519072 0.12672
IU.COLA.BHZ.00 2018-12-22T14:37:30.57 10.0 positive automatic P 18 85.387 -2.86106 0.131542
AU.MAW.BHZ. 2018-12-22T14:37:20.04 10.0 positive automatic P 202 82.8014 -0.229045 0.149911
IN.SHL.HHZ. 2018-12-22T14:37:19.92 10.0 positive automatic P 299 82.6234 0.578772 0.151452
IU.BILL.BHZ.00 2018-12-22T14:37:11.17 10.0 positive automatic P 360 81.4636 -2.15265 0.157927
IU.ULN.BHZ.00 2018-12-22T14:37:10.57 10.0 positive automatic P 324 80.9523 -0.264452 0.166306
AK.TNA.BHZ. 2018-12-22T14:37:10.85 10.0 negative automatic P 10 81.2038 -1.05448 0.16096
IU.YAK.BHZ.00 2018-12-22T14:37:07.97 10.0 positive automatic P 343 80.8353 -1.98326 0.156214
II.KDAK.BHZ.00 2018-12-22T14:36:56.67 10.0 positive automatic P 21 78.6104 -1.24184 0.192885
IU.QSPA.BHZ.00 2018-12-22T14:36:45.52 10.0 positive automatic P 180 76.5293 -1.26233 0.186745
RM.SLV.BHZ. 2018-12-22T14:36:13.82 10.0 positive automatic P 299 70.7892 1.04605 0.27161
GE.GSI.BHZ. 2018-12-22T14:36:09.22 10.0 positive automatic P 276 70.1126 0.658754 0.230204
MY.KUM.BHZ. 2018-12-22T14:35:57.77 10.0 positive automatic P 281 68.2381 0.809232 0.269942
MY.IPM.BHZ. 2018-12-22T14:35:54.32 10.0 positive automatic P 281 67.6473 1.03714 0.309365
IU.SBA.BHZ.00 2018-12-22T14:35:33.22 10.0 positive automatic P 180 64.4448 0.503532 0.338294
MY.KOM.BHZ. 2018-12-22T14:35:32.47 10.0 positive automatic P 279 64.1937 1.39484 0.362326
IU.CASY.BHZ.00 2018-12-22T14:35:32.42 10.0 positive automatic P 202 64.5502 -0.976646 0.348986
IU.YSS.BHZ.00 2018-12-22T14:35:29.35 10.0 positive automatic P 342 64.079 -0.993948 0.346962
GT.VNDA.BHZ.00 2018-12-22T14:35:29.30 10.0 positive automatic P 181 64.1622 -1.58134 0.334223
RM.DLV.BHZ. 2018-12-22T14:35:25.07 10.0 positive automatic P 291 63.1116 0.919381 0.359638
JP.JKA.BHZ. 2018-12-22T14:35:12.75 10.0 positive automatic pP 339 58.9251 -0.420259 0
AU.XMI.BHZ. 2018-12-22T14:35:02.52 10.0 positive automatic P 266 59.6928 1.59155 0.406259
JP.JTM.BHZ. 2018-12-22T14:34:55.65 10.0 positive automatic P 338 59.188 -1.78073 0.423226
IU.TATO.BHZ.00 2018-12-22T14:34:52.02 10.0 positive automatic P 311 58.4851 -0.545526 0.404588
JP.JSD.BHZ. 2018-12-22T14:34:47.65 10.0 positive automatic P 334 57.9668 -1.29453 0.441133
JP.JNU.BHZ. 2018-12-22T14:34:46.55 10.0 positive automatic P 325 57.7689 -1.07649 0.444071
JP.YOJ.BHZ. 2018-12-22T14:34:42.50 10.0 positive automatic P 311 57.0769 -0.170308 0.454417
JP.JMM.BHZ. 2018-12-22T14:34:39.05 10.0 positive automatic P 336 56.7658 -1.43311 0.459107
JP.JMN.BHZ. 2018-12-22T14:34:38.80 10.0 positive automatic P 327 56.5907 -0.517739 0.461757
IU.MAJO.BHZ.00 2018-12-22T14:34:38.37 10.0 positive automatic P 333 56.7442 -2.01271 0.459434
MY.SBM.BHZ. 2018-12-22T14:34:38.97 10.0 positive automatic P 282 56.38 1.20155 0.454143
JP.JGF.BHZ. 2018-12-22T14:34:35.70 10.0 positive automatic P 331 56.3555 -1.95285 0.434307
GE.SMRI.BHZ. 2018-12-22T14:34:34.52 10.0 positive automatic P 271 55.6886 1.68738 0.453916
JP.JOW.BHZ. 2018-12-22T14:34:27.50 10.0 positive automatic P 317 54.9207 0.187606 0.48742
MY.KKM.BHZ. 2018-12-22T14:34:20.32 10.0 positive automatic P 288 53.8293 0.826356 0.504564
JP.JMZ.BHZ. 2018-12-22T14:34:07.60 10.0 negative automatic P 319 52.2993 -0.510268 0.505048
GE.JAGI.BHZ. 2018-12-22T14:34:04.42 10.0 positive automatic P 270 51.8085 -0.0683086 0.550192
MY.LDM.BHZ. 2018-12-22T14:34:03.62 10.0 positive automatic P 288 51.3976 2.19316 0.543831
AU.MORW.BHZ. 2018-12-22T14:33:46.25 10.0 positive automatic P 243 49.3985 -0.119418 0.538734
IU.MBWA.BHZ.00 2018-12-22T14:33:15.90 10.0 positive automatic P 253 45.4196 0.428665 0.646618
GE.LUWI.BHZ. 2018-12-22T14:33:15.37 10.0 positive automatic P 282 45.262 1.1806 0.634345
GE.MMRI.BHZ. 2018-12-22T14:33:03.62 10.0 positive automatic P 271 43.9144 0.137782 0.6153
GE.SOEI.BHZ. 2018-12-22T14:32:47.37 10.0 positive automatic P 270 41.7494 1.24141 0.681669
GE.SANI.BHZ. 2018-12-22T14:32:47.87 10.0 positive automatic P 282 41.8929 0.7494 0.711427
AU.FITZ.BHZ. 2018-12-22T14:32:29.53 10.0 positive automatic P 258 39.7859 -0.276661 0.751622
AU.FORT.BHZ. 2018-12-22T14:32:27.50 10.0 positive automatic P 237 39.5789 -0.597399 0.764737
AU.WRKA.BHZ. 2018-12-22T14:32:14.07 10.0 positive automatic P 246 37.9923 -0.830513 0.805897
AU.MTN.BHZ. 2018-12-22T14:31:46.92 10.0 positive automatic P 267 34.682 0.311161 0.549425
II.TAU.BHZ.00 2018-12-22T14:31:39.52 10.0 positive automatic P 206 33.9392 -0.664441 0.811018
AU.KDU.BHZ. 2018-12-22T14:31:35.65 10.0 positive automatic P 267 33.3943 0.206121 0.859843
AU.HTT.BHZ. 2018-12-22T14:31:25.62 10.0 positive automatic P 227 32.2749 -0.158571 0.925948
NZ.ODZ.HHZ.10 2018-12-22T14:31:20.92 10.0 negative automatic P 175 31.812 -0.72438 0.922531
NZ.URZ.HHZ.10 2018-12-22T14:30:32.01 10.0 positive automatic P 162 26.4979 -2.45188 0.662252
AU.QLP.BHZ. 2018-12-22T14:30:19.65 10.0 positive automatic P 235 24.8759 -0.154013 0.952381
AU.RIV.BHZ. 2018-12-22T14:30:19.95 10.0 positive automatic P 212 24.8652 0.274135 0.963855
AU.NIUE.BHZ. 2018-12-22T14:30:03.52 10.0 negative automatic P 107 23.0552 0.404585 0.930233
AU.COEN.BHZ. 2018-12-22T14:30:01.90 10.0 positive automatic P 266 22.9246 0.101394 0.898876
NZ.OUZ.HHZ.10 2018-12-22T14:29:57.79 10.0 positive automatic P 165 22.6709 -1.29684 0.328407
AU.ARMA.BHZ. 2018-12-22T14:29:52.52 10.0 positive automatic P 217 22.0133 0.213013 0.930233
IU.CTAO.BHZ.00 2018-12-22T14:29:39.17 10.0 positive automatic P 248 20.7319 0.702747 0.869565
IU.PMG.BHZ.00 2018-12-22T14:29:27.82 10.0 positive automatic P 280 19.6278 1.35165 0.952381
AU.EIDS.BHZ. 2018-12-22T14:29:21.15 10.0 positive automatic P 229 19.0005 1.5011 0.879121
II.MSVF.BHZ.00 2018-12-22T14:27:50.52 10.0 negative automatic P 113 11.6974 2.98037 0.952381
ND.ONTNC.BHZ.00 2018-12-22T14:27:07.69 10.0 positive automatic P 182 8.9105 -1.68724 0.952381
ND.MARNC.BHZ.00 2018-12-22T14:26:59.14 10.0 positive automatic P 172 8.1675 -0.0730626 0.952381
IU.HNR.BHZ.00 2018-12-22T14:26:52.42 10.0 negative automatic P 300 7.7737 -1.42052 0.701754
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download