Earthquake with magnitude of Mwp 6.1 on date 17-02-2021 and time 22:49:43 (UTC) in region New Caledonia [Sea]

A magnitude Mwp 6.1 earthquake occured in region: New Caledonia [Sea], on

  • 17-02-2021 22:49:43 (UTC)
  • 17-02-2021 23:49:43 (UTC +01:00) Italian time
  • 18-02-2021 09:49:43 (UTC +11:00) local time in the region of the earthquake (Pacific/Noumea)

and geographic coordinates (lat, lon) -23.3, 172.13 at 70 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 5.5
Mwp 6.1

Mwpd 6.2
2021-02-17
22:49:43
-23.3 172.13 70 2021-02-17
23:05:27
Sala Sismica INGV-Roma 87256911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-17 22:49:43
Latitude -23.30
Longitude 172.13
Depth (km) 70 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 87256911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 13356
Semi-minor axis of confidence ellipse (meter) 10398
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 11219.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94.5626
Number of associated phases, regardless of their use for origin computation 83
Number of defining phases 83
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.82064
Epicentral distance of station closest to the epicenter (degree) 6.86125
Epicentral distance of station farthest from the epicenter (degree) 93.40358
Number of stations at which the event was observed 68
Number of stations from which data was used for origin computation 68
Magnitudes information

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 19
Type of magnitude Mwp
Reference to an origin 87256911
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-02-17 23:05:27

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 13
Type of magnitude Mwpd
Reference to an origin 87256911
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-02-17 23:05:27

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 40
Type of magnitude mb
Reference to an origin 87256911
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-02-17 23:05:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.ELK.BHZ.00 2021-02-17T23:02:51.48 10.0 positive automatic PcP 46 92.8899 2.71652 0
US.HAWA.BHZ.00 2021-02-17T23:02:50.68 10.0 negative automatic P 40 93.0116 2.28655 0.0721167
IU.COLA.BHZ.00 2021-02-17T23:02:48.75 10.0 negative automatic P 16 93.4036 -1.41871 0.0639477
IU.TUC.BHZ.00 2021-02-17T23:02:48.65 10.0 negative automatic PcP 56 92.1718 3.29322 0
US.WRAK.BHZ.00 2021-02-17T23:02:47.50 10.0 positive automatic P 27 92.4032 1.96888 0.075742
US.WVOR.BHZ.00 2021-02-17T23:02:43.65 10.0 positive automatic P 44 91.5194 1.98717 0.0871804
IU.ULN.BHZ.00 2021-02-17T23:02:44.07 10.0 negative automatic P 323 91.9255 0.48211 0.0795655
US.NLWA.BHZ.00 2021-02-17T23:02:42.10 10.0 negative automatic PcP 37 91.062 1.71693 0
IU.YAK.BHZ.00 2021-02-17T23:02:41.47 10.0 negative automatic P 342 91.8027 -1.29311 0.0822446
IU.BILL.BHZ.00 2021-02-17T23:02:40.47 10.0 negative automatic P 358 91.4592 -0.736852 0.0788258
US.TPNV.BHZ.00 2021-02-17T23:02:39.58 10.0 negative automatic PcP 49 90.3609 2.1313 0
IU.COR.BHZ.00 2021-02-17T23:02:36.90 10.0 positive automatic PcP 40 89.811 2.14636 0
BK.CMB.BHZ.00 2021-02-17T23:02:28.42 10.0 negative automatic PcP 47 88.0892 1.18675 0
C.GO10.BHZ. 2021-02-17T23:02:22.03 10.0 positive automatic PcP 148 86.0943 3.6078 0
GE.SNAA.BHZ. 2021-02-17T23:02:12.71 10.0 negative automatic PcP 182 84.96 -0.746492 0
IU.CHTO.BHZ.00 2021-02-17T23:02:01.97 10.0 negative automatic PcP 294 82.8768 -2.25904 0
IU.PMSA.BHZ.00 2021-02-17T23:01:59.27 10.0 positive automatic PcP 159 81.9503 -0.827432 0
RM.SLV.BHZ. 2021-02-17T23:01:46.47 10.0 negative automatic P 299 80.0008 2.03249 0
GE.GSI.BHZ. 2021-02-17T23:01:25.97 10.0 positive automatic P 277 76.3717 1.68164 0.196545
AK.ATKA.BHZ. 2021-02-17T23:01:23.89 10.0 positive automatic P 9 76.442 -0.789069 0
AU.MAW.BHZ. 2021-02-17T23:01:22.90 10.0 negative automatic PcP 202 75.5 -9.14828 0
IU.ADK.BHZ.00 2021-02-17T23:01:20.22 10.0 positive automatic P 7 75.8181 -0.933801 0.211259
MY.KUM.BHZ. 2021-02-17T23:01:19.12 10.0 negative automatic P 283 75.2805 1.05135 0.216742
MY.IPM.BHZ. 2021-02-17T23:01:15.22 10.0 negative automatic P 282 74.5908 1.09336 0.229208
IU.INCN.BHZ.00 2021-02-17T23:01:12.47 10.0 positive automatic P 324 74.3237 -0.0750116 0.23773
RM.DLV.BHZ. 2021-02-17T23:00:57.92 10.0 negative automatic P 292 71.5187 1.76164 0.257071
GE.MNAI.BHZ. 2021-02-17T23:00:42.22 10.0 negative automatic P 274 69.1614 0.622704 0.284097
IU.MAJO.BHZ.00 2021-02-17T23:00:32.32 10.0 positive automatic P 331 67.867 -1.25309 0.262835
JP.JMN.BHZ. 2021-02-17T23:00:31.95 10.0 positive automatic P 326 67.6533 -0.301469 0.151047
G.INU.BHZ.00 2021-02-17T23:00:29.91 10.0 positive automatic P 329 67.4139 -0.760071 0.273231
JP.JGF.BHZ. 2021-02-17T23:00:29.40 10.0 positive automatic P 330 67.4719 -1.71384 0.311542
MY.SBM.BHZ. 2021-02-17T23:00:07.92 10.0 negative automatic P 285 63.698 1.18062 0.343925
MY.KKM.BHZ. 2021-02-17T22:59:55.97 10.0 positive automatic P 291 61.9488 0.747623 0.366646
MY.LDM.BHZ. 2021-02-17T22:59:41.02 10.0 negative automatic P 292 59.5526 2.18011 0.365704
IU.CASY.BHZ.00 2021-02-17T22:59:25.97 10.0 negative automatic P 205 57.4553 1.74809 0.438305
GE.JAGI.BHZ. 2021-02-17T22:59:23.22 10.0 negative automatic P 275 57.3154 -0.0496026 0.430341
II.KAPI.BHZ.00 2021-02-17T22:58:57.72 10.0 negative automatic P 281 53.6198 0.95001 0.490372
AU.GIRL.BHZ.00 2021-02-17T22:58:53.93 10.0 negative automatic P 258 52.9269 2.27254 0.525213
GE.LUWI.BHZ. 2021-02-17T22:58:51.12 10.0 negative automatic P 288 52.7459 0.81505 0.509736
AU.MORW.BHZ. 2021-02-17T22:58:31.60 10.0 negative automatic P 251 50.2015 0.23703 0.55705
GE.MMRI.BHZ. 2021-02-17T22:58:29.32 10.0 negative automatic P 279 49.8778 0.439699 0.55588
GE.SANI.BHZ. 2021-02-17T22:58:25.42 10.0 negative automatic P 288 49.4469 -0.171444 0.562986
IU.NWAO.BHZ.00 2021-02-17T22:58:21.20 10.0 negative automatic P 246 48.8188 0.339553 0.573423
IU.MBWA.BHZ.00 2021-02-17T22:58:16.00 10.0 negative automatic P 262 48.2832 0.286538 0.556516
GE.FAKI.BHZ. 2021-02-17T22:57:38.72 10.0 negative automatic P 292 43.6093 -1.22266 0.663692
AU.MTN.BHZ.00 2021-02-17T22:57:11.18 10.0 negative automatic P 278 40.1988 -0.973111 0.734904
AU.WRKA.BHZ.00 2021-02-17T22:57:07.73 10.0 positive automatic P 258 39.8515 -1.62559 0.759389
AU.FORT.BHZ.00 2021-02-17T22:57:07.80 10.0 negative automatic P 249 39.7006 -0.218605 0.762345
AU.KDU.BHZ.00 2021-02-17T22:57:01.65 10.0 negative automatic P 279 39.0377 -0.835095 0.739739
II.WRAB.BHZ.00 2021-02-17T22:56:28.32 10.0 negative automatic P 268 35.1745 -1.4901 0.864016
AU.HTT.BHZ. 2021-02-17T22:55:51.77 10.0 positive automatic P 243 30.7661 0.320719 0.970849
AU.QLP.BHZ. 2021-02-17T22:55:03.87 10.0 positive automatic P 257 25.4519 -0.0927366 0.97561
IU.CTAO.BHZ.00 2021-02-17T22:54:52.75 10.0 negative automatic P 273 24.2207 -0.0589655 0.952381
AU.MILA.BHZ.00 2021-02-17T22:54:52.85 10.0 negative automatic P 230 24.048 1.5528 0.963855
G.CAN.BHZ.00 2021-02-17T22:54:46.20 10.0 negative automatic P 234 23.3871 0.952167 0.909091
NZ.ODZ.HHZ.10 2021-02-17T22:54:29.68 10.0 positive automatic P 183 21.775 1.06678 0.877193
AU.RIV.BHZ. 2021-02-17T22:54:23.90 10.0 negative automatic P 235 21.1496 2.00952 0
AU.ARMA.BHZ. 2021-02-17T22:54:06.55 10.0 positive automatic P 244 19.5841 1.38548 0.941176
AU.EIDS.BHZ. 2021-02-17T22:54:02.10 10.0 negative automatic P 260 19.2666 0.550721 0.869565
NZ.KHZ.HHZ.10 2021-02-17T22:54:01.75 10.0 positive automatic P 177 19.1496 1.50713 0.952381
IU.SNZO.BHZ.00 2021-02-17T22:53:51.30 10.0 positive automatic P 174 18.1351 2.15666 0.963855
IU.AFI.BHZ.00 2021-02-17T22:53:46.97 10.0 negative automatic P 61 17.8885 0.443458 0.898876
IU.HNR.BHZ.00 2021-02-17T22:53:44.30 10.0 positive automatic P 318 18.1066 -4.52593 0.879121
AU.NIUE.BHZ. 2021-02-17T22:53:36.40 10.0 positive automatic P 79 17.2419 -2.36747 0.987654
ND.KOUNC.BHZ.00 2021-02-17T22:52:55.70 10.0 positive automatic S 289 7.7754 -2.8762 0
NZ.OUZ.HHZ.10 2021-02-17T22:52:29.70 10.0 negative automatic P 174 11.9876 -0.856108 0.985222
II.MSVF.BHZ.00 2021-02-17T22:51:36.77 10.0 positive automatic P 46 7.85 2.55095 0.8
AU.NFK.BHZ.00 2021-02-17T22:51:15.64 10.0 positive automatic P 212 6.8612 -4.95989 0.934579
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