Earthquake with magnitude of Mwp 6.5 on date 16-02-2021 and time 01:49:27 (Italy) in region Vanuatu Islands [Sea: Vanuatu]

A magnitude Mwp 6.5 earthquake occured in region: Vanuatu Islands [Sea: Vanuatu], on

  • 16-02-2021 00:49:27 (UTC)
  • 16-02-2021 01:49:27 (UTC +01:00) Italian time
  • 16-02-2021 11:49:27 (UTC +11:00) local time in the region of the earthquake (Pacific/Efate)

and geographic coordinates (lat, lon) -17.56, 167.53 at 8 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.

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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
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
Reviewed
Rev100
mb 5.3
Mwp 6.5

Mwpd 6.7
2021-02-16
00:49:27
-17.56 167.53 8 2021-02-16
01:07:18
Sala Sismica INGV-Roma 87191571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-16 00:49:27
Latitude -17.56
Longitude 167.53
Depth (km) 8 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 87191571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 17785
Semi-minor axis of confidence ellipse (meter) 14067
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 341
Circular confidence region, given by single value of horizontal uncertainty (meter) 14355.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62.313
Number of associated phases, regardless of their use for origin computation 60
Number of defining phases 60
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.78531
Epicentral distance of station closest to the epicenter (degree) 10.02316
Epicentral distance of station farthest from the epicenter (degree) 93.15729
Number of stations at which the event was observed 54
Number of stations from which data was used for origin computation 54
Magnitudes information

Mwp:6.5

Field Value
Value 6.5
Uncertainty 0.1
Num. used stations 29
Type of magnitude Mwp
Reference to an origin 87191571
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-02-16 01:07:18

Mwpd:6.7

Field Value
Value 6.7
Uncertainty 0.1
Num. used stations 26
Type of magnitude Mwpd
Reference to an origin 87191571
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-02-16 01:07:18

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 33
Type of magnitude mb
Reference to an origin 87191571
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-02-16 01:07:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.WUAZ.BHZ.00 2021-02-16T01:02:39.68 10.0 positive automatic P 54 93.1573 -0.660804 0
US.ELK.BHZ.00 2021-02-16T01:02:34.53 10.0 positive automatic P 48 92.1318 -1.18385 0.0801517
IU.TIXI.BHZ.00 2021-02-16T01:02:37.92 10.0 negative automatic P 349 92.9684 -1.27803 0
IU.TUC.BHZ.00 2021-02-16T01:02:36.97 10.0 positive automatic P 57 92.5588 -0.486305 0
US.BMO.BHZ.00 2021-02-16T01:02:34.48 10.0 positive automatic P 43 92.2727 -1.70443 0
US.HAWA.BHZ.00 2021-02-16T01:02:31.35 10.0 positive automatic P 41 91.4584 -0.924427 0
US.WVOR.BHZ.00 2021-02-16T01:02:26.90 10.0 positive automatic P 45 90.4343 -0.786317 0
US.TPNV.BHZ.00 2021-02-16T01:02:24.68 10.0 positive automatic P 51 89.9882 -0.971992 0.0920693
IU.COLA.BHZ.00 2021-02-16T01:02:18.17 10.0 positive automatic P 17 89.1363 -3.25145 0.0914748
BK.CMB.BHZ.00 2021-02-16T01:02:11.17 10.0 positive automatic P 49 87.4097 -2.15214 0.114106
BK.SAO.BHZ.00 2021-02-16T01:02:07.40 10.0 negative automatic P 49 86.1083 0.504046 0
IN.SHL.HHZ. 2021-02-16T01:02:05.57 10.0 negative automatic P 299 85.2634 2.92707 0.118662
IU.BILL.BHZ.00 2021-02-16T01:01:59.82 10.0 positive automatic P 360 85.6292 -4.69851 0.12073
IU.ULN.BHZ.00 2021-02-16T01:01:59.62 10.0 positive automatic P 324 84.7547 -0.743545 0.0862696
IU.YAK.BHZ.00 2021-02-16T01:01:59.62 10.0 positive automatic P 343 85.0329 -1.88161 0.128202
IU.CHTO.BHZ.00 2021-02-16T01:01:17.97 10.0 negative automatic P 295 76.5754 1.61879 0.208503
II.RPN.BHZ.00 2021-02-16T01:01:12.72 10.0 positive automatic P 114 76.1649 -1.24834 0
RM.SLV.BHZ. 2021-02-16T01:01:00.32 10.0 negative automatic P 299 73.4524 1.96678 0.111474
GE.GSI.BHZ. 2021-02-16T01:00:56.02 10.0 positive automatic PcP 278 71.3479 -9.39644 0
MY.KUM.BHZ. 2021-02-16T01:00:37.27 10.0 negative automatic P 283 69.8237 0.865627 0
MY.IPM.BHZ. 2021-02-16T01:00:33.52 10.0 negative automatic P 282 69.1854 1.03441 0
IU.YSS.BHZ.00 2021-02-16T01:00:27.40 10.0 positive automatic P 342 68.2649 0.66851 0.275508
JP.JMN.BHZ. 2021-02-16T00:59:43.85 10.0 negative automatic P 328 60.4997 7.9047 0.386018
IU.MAJO.BHZ.00 2021-02-16T00:59:37.42 10.0 negative automatic P 333 60.7847 -0.447136 0.357775
JP.JGF.BHZ. 2021-02-16T00:59:36.85 10.0 positive automatic P 332 60.3673 1.8017 0.396832
IU.SBA.BHZ.00 2021-02-16T00:59:36.80 10.0 negative automatic P 180 60.2837 2.40736 0.316921
GT.VNDA.BHZ.00 2021-02-16T00:59:34.20 10.0 negative automatic P 181 60.0176 1.62921 0.31123
AU.MORW.BHZ. 2021-02-16T00:58:07.02 10.0 positive automatic P 246 48.2831 0.0035014 0.582403
IU.NWAO.BHZ.00 2021-02-16T00:57:59.85 10.0 positive automatic P 241 47.5245 -1.3071 0.588393
IU.MBWA.BHZ.00 2021-02-16T00:57:41.60 10.0 negative automatic P 257 45.0776 -0.283001 0.301275
GE.SANI.BHZ. 2021-02-16T00:57:29.12 10.0 negative automatic P 286 43.6234 -1.0881 0.313493
GE.SOEI.BHZ. 2021-02-16T00:57:22.82 10.0 negative automatic P 275 42.6643 0.196982 0.450358
AU.FITZ.BHZ. 2021-02-16T00:56:58.18 10.0 positive automatic P 263 39.7964 -0.706658 0.733939
AU.FORT.BHZ.00 2021-02-16T00:56:44.63 10.0 negative automatic P 242 38.1216 -0.237102 0.793596
GE.FAKI.BHZ. 2021-02-16T00:56:39.67 10.0 negative automatic P 289 37.5701 -0.52997 0.36696
AU.WRKA.BHZ.00 2021-02-16T00:56:35.85 10.0 negative automatic P 252 37.1784 -1.11006 0.822475
AU.KDU.BHZ.00 2021-02-16T00:56:10.45 10.0 negative automatic P 273 34.1456 -0.371745 0.554436
II.WRAB.BHZ.00 2021-02-16T00:55:45.65 10.0 positive automatic P 260 31.4521 -1.66768 0.869664
AU.HTT.BHZ. 2021-02-16T00:55:35.57 10.0 negative automatic P 233 30.1462 -0.272055 0.938434
NZ.KHZ.HHZ.10 2021-02-16T00:55:00.18 10.0 positive automatic P 170 25.3722 7.19185 0.952381
AU.MANU.BHZ.00 2021-02-16T00:54:52.78 10.0 negative automatic P 306 25.1602 1.70209 0
AU.MILA.BHZ.00 2021-02-16T00:54:52.18 10.0 negative automatic P 216 25.3253 -0.510608 0.747664
G.CAN.BHZ.00 2021-02-16T00:54:41.30 10.0 negative automatic P 219 24.2145 -1.25371 0.43956
AU.QLP.BHZ. 2021-02-16T00:54:32.70 10.0 negative automatic P 243 23.348 -1.58349 0.930233
NZ.URZ.HHZ.10 2021-02-16T00:54:19.81 10.0 positive automatic P 160 22.326 -3.63061 0.328407
AU.NIUE.BHZ. 2021-02-16T00:54:08.55 10.0 positive automatic P 98 21.4341 -5.34707 0.43956
IU.CTAO.BHZ.00 2021-02-16T00:54:02.40 10.0 positive automatic P 259 20.2836 0.906442 0.869565
IU.AFI.BHZ.00 2021-02-16T00:53:57.62 10.0 positive automatic P 83 20.2327 -3.37905 0.43956
IU.TARA.BHZ.00 2021-02-16T00:53:54.22 10.0 positive automatic P 16 19.6489 -0.294017 0.987654
AU.ARMA.BHZ. 2021-02-16T00:53:51.65 10.0 negative automatic P 225 19.3571 0.131786 0.43956
NZ.OUZ.HHZ.10 2021-02-16T00:53:37.83 10.0 positive automatic P 164 18.4615 -3.66126 0.328407
IU.FUNA.BHZ.00 2021-02-16T00:52:50.50 10.0 positive automatic P 53 14.5058 -0.410436 0.43956
IU.HNR.BHZ.00 2021-02-16T00:52:03.37 10.0 negative automatic P 317 10.969 0.773846 0.43956
II.MSVF.BHZ.00 2021-02-16T00:51:51.42 10.0 positive automatic P 93 10.0232 1.655 0.952381
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download