Earthquake with magnitude of Mwp 6.0 on date 11-02-2021 and time 05:15:20 (Italy) in region New Caledonia [Sea]

A magnitude Mwp 6.0 earthquake occured in region: New Caledonia [Sea], on

  • 11-02-2021 04:15:20 (UTC)
  • 11-02-2021 05:15:20 (UTC +01:00) Italian time
  • 11-02-2021 15:15:20 (UTC +11:00) local time in the region of the earthquake (Pacific/Noumea)

and geographic coordinates (lat, lon) -22.788, 171.02 at 20 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 6.0

Mwpd 6.1
2021-02-11
04:15:20
-22.7883 171.02 20 2021-02-11
04:38:03
Sala Sismica INGV-Roma 87031281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-11 04:15:20
Latitude -22.7883
Longitude 171.0200
Depth (km) 20 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 87031281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 12946
Semi-minor axis of confidence ellipse (meter) 8587
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 143
Circular confidence region, given by single value of horizontal uncertainty (meter) 12363.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75.0997
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.6659
Epicentral distance of station closest to the epicenter (degree) 6.8401
Epicentral distance of station farthest from the epicenter (degree) 95.10991
Number of stations at which the event was observed 42
Number of stations from which data was used for origin computation 42
Magnitudes information

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0
Num. used stations 3
Type of magnitude Mwpd
Reference to an origin 87031281
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-02-11 04:38:03

Mwp:6

Field Value
Value 6
Uncertainty 0.2
Num. used stations 7
Type of magnitude Mwp
Reference to an origin 87031281
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-02-11 04:38:03

mb:5.3

Field Value
Value 5.3
Uncertainty 0.2
Num. used stations 27
Type of magnitude mb
Reference to an origin 87031281
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-02-11 04:38:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.HLID.BHZ.00 2021-02-11T04:28:43.23 10.0 positive automatic P 45 95.1099 2.37013 0.0609415
US.WUAZ.BHZ.00 2021-02-11T04:28:33.90 10.0 positive automatic P 53 93.6628 -0.286267 0.066002
US.ELK.BHZ.00 2021-02-11T04:28:35.63 10.0 negative automatic P 47 93.2777 3.1036 0.073019
IU.COLA.BHZ.00 2021-02-11T04:28:30.90 10.0 negative automatic P 16 93.1924 -0.887748 0.0701918
IU.TUC.BHZ.00 2021-02-11T04:28:29.12 10.0 negative automatic P 56 92.7254 -0.628098 0.0754871
NN.PRN.HHZ. 2021-02-11T04:28:23.75 10.0 positive automatic P 50 91.8616 -2.1052 0.0763513
C1.LL02.BHZ. 2021-02-11T04:28:29.30 10.0 positive automatic P 140 92.3708 1.27774 0.0767598
G.COYC.BHZ.00 2021-02-11T04:28:23.15 10.0 positive automatic P 141 90.8763 2.07594 0.0823308
US.NLWA.BHZ.00 2021-02-11T04:28:21.95 10.0 positive automatic P 38 91.2793 -1.06642 0.083572
IU.ULN.BHZ.00 2021-02-11T04:28:18.47 10.0 positive automatic P 323 90.8995 -2.94907 0.0754784
US.TPNV.BHZ.00 2021-02-11T04:28:18.90 10.0 negative automatic P 50 90.8036 -2.07515 0.0886937
IU.CHTO.BHZ.00 2021-02-11T04:27:36.02 10.0 positive automatic PcP 294 81.7363 -0.105133 0.163042
RM.SLV.BHZ. 2021-02-11T04:27:19.37 10.0 positive automatic P 299 78.8599 -1.3029 0.0857481
GE.GSI.BHZ. 2021-02-11T04:27:01.12 10.0 positive automatic PcP 278 75.2929 0.586668 0.216513
MY.IPM.BHZ. 2021-02-11T04:26:49.22 10.0 positive automatic P 282 73.4862 -0.825777 0.230093
IU.QSPA.BHZ.00 2021-02-11T04:26:11.27 10.0 positive automatic P 180 67.1451 -0.440602 0.288064
MY.SBM.BHZ. 2021-02-11T04:25:40.97 10.0 positive automatic P 286 62.5781 -0.548734 0.342681
MY.KKM.BHZ. 2021-02-11T04:25:28.67 10.0 positive automatic P 291 60.8123 -1.05141 0.381663
MY.LDM.BHZ. 2021-02-11T04:25:14.17 10.0 positive automatic P 292 58.4153 1.08768 0
II.KAPI.BHZ.00 2021-02-11T04:24:30.30 10.0 positive automatic P 282 52.5178 -0.381211 0.495878
GE.SANI.BHZ. 2021-02-11T04:23:57.57 10.0 positive automatic P 289 48.3167 -1.28616 0.555819
IU.NWAO.BHZ.00 2021-02-11T04:23:57.92 10.0 positive automatic P 245 48.1015 0.660923 0.571991
IU.MBWA.BHZ.00 2021-02-11T04:23:51.40 10.0 negative automatic P 262 47.3479 0.0161542 0.61969
GE.SOEI.BHZ. 2021-02-11T04:23:45.67 10.0 positive automatic P 278 46.5131 0.665545 0.289372
AU.FITZ.BHZ. 2021-02-11T04:23:13.60 10.0 negative automatic P 268 42.6183 -0.138102 0.681429
GE.FAKI.BHZ. 2021-02-11T04:23:11.02 10.0 positive automatic P 292 42.4715 -1.53212 0.668554
AU.FORT.BHZ.00 2021-02-11T04:22:43.63 10.0 positive automatic P 249 38.9324 0.283902 0.750159
AU.WRKA.BHZ.00 2021-02-11T04:22:43.30 10.0 negative automatic P 258 38.96 -0.351396 0.7862
AU.KDU.BHZ.00 2021-02-11T04:22:33.65 10.0 positive automatic P 279 37.952 -1.42464 0.623903
II.WRAB.BHZ.00 2021-02-11T04:22:00.97 10.0 positive automatic P 268 34.1742 -1.82797 0.874265
AU.HTT.BHZ. 2021-02-11T04:21:27.90 10.0 negative automatic P 242 30.0947 0.821607 0.907304
AU.QLP.BHZ. 2021-02-11T04:20:37.67 10.0 positive automatic P 256 24.584 0.133368 0.97561
AU.MILA.BHZ.00 2021-02-11T04:20:30.33 10.0 negative automatic P 228 23.6176 1.51295 0
IU.CTAO.BHZ.00 2021-02-11T04:20:24.52 10.0 positive automatic P 272 23.1812 0.190965 0.754717
G.CAN.BHZ.00 2021-02-11T04:20:22.85 10.0 negative automatic P 232 22.8838 1.596 0.816327
NZ.KHZ.HHZ.10 2021-02-11T04:19:47.36 10.0 negative automatic P 174 19.7387 0.0420697 0.49505
AU.ARMA.BHZ. 2021-02-11T04:19:41.17 10.0 positive automatic P 242 18.9056 2.78554 0.952381
IU.AFI.BHZ.00 2021-02-11T04:19:33.32 10.0 positive automatic P 64 18.5608 -1.20363 0.963855
NZ.URZ.HHZ.10 2021-02-11T04:19:07.63 10.0 negative automatic P 163 16.3267 0.711477 0.657895
NZ.OUZ.HHZ.10 2021-02-11T04:18:17.47 10.0 positive automatic P 170 12.6336 0.0567578 0.900901
II.MSVF.BHZ.00 2021-02-11T04:17:21.52 10.0 positive automatic P 54 8.3013 3.30021 0.869565
AU.NFK.BHZ.00 2021-02-11T04:16:55.10 10.0 positive automatic P 203 6.8401 -2.96525 0.909091
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