Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.0 on date 28-12-2022 and time 16:34:20 (UTC) in region New Caledonia [Sea]

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

  • 28-12-2022 16:34:20 (UTC)
  • 28-12-2022 17:34:20 (UTC +01:00) Italian time
  • 29-12-2022 03:34:20 (UTC +11:00) local time in the region of the earthquake (Pacific/Efate)

and geographic coordinates (lat, lon) -21.1570, 171.5700 at 1 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 5.4
Mwp 6.0
Mwpd 6.2 		2022-12-28
16:34:20		 -21.157 171.57 1 2022-12-28
16:54:28		 Sala Sismica INGV-Roma 113145421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-12-28 16:34:20
Latitude -21.1570
Longitude 171.5700
Depth (km) 1 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 113145421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 19617
Semi-minor axis of confidence ellipse (meter) 11838
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 245
Circular confidence region, given by single value of horizontal uncertainty (meter) 15855.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107.579
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 50
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.61123
Epicentral distance of station closest to the epicenter (degree) 8.54230
Epicentral distance of station farthest from the epicenter (degree) 95.73428
Number of stations at which the event was observed 50
Number of stations from which data was used for origin computation 50
Magnitudes information

Mwp:6.0

Field Value
Value 6.0
Uncertainty 0.1
Num. used stations 16
Type of magnitude Mwp
Reference to an origin 113145421
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2022-12-28 16:54:28

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 14
Type of magnitude Mwpd
Reference to an origin 113145421
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2022-12-28 16:54:28

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 42
Type of magnitude mb
Reference to an origin 113145421
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2022-12-28 16:54:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IO.EVN.BHZ. 2022-12-28T16:47:51.70 10.0 positive automatic PcP 298 10587.9903 5.42795 0
IU.ANMO.BHZ.00 2022-12-28T16:47:50.05 10.0 negative automatic P 55 10626.5073 3.00792 0.0575912
US.MNTX.BHZ.00 2022-12-28T16:47:48.13 10.0 positive automatic P 58 10585.7148 3.01028 0.0588673
US.HLID.BHZ.00 2022-12-28T16:47:39.93 10.0 negative automatic P 44 10388.2014 2.73334 0.06951
US.EGAK.BHZ.00 2022-12-28T16:47:33.93 10.0 negative automatic P 18 10351.3716 -1.48602 0.0714518
US.WUAZ.BHZ.00 2022-12-28T16:47:33.50 10.0 positive automatic P 53 10241.7369 2.42832 0.0821677
US.ELK.BHZ.00 2022-12-28T16:47:31.53 10.0 positive automatic P 47 10188.3348 2.57054 0.08037
US.HAWA.BHZ.00 2022-12-28T16:47:31.13 10.0 negative automatic P 40 10178.7999 2.88468 0.0818597
IU.TUC.BHZ.00 2022-12-28T16:47:30.92 10.0 negative automatic P 56 10143.8904 4.04182 0.0810075
AT.SKAG.BHZ. 2022-12-28T16:47:29.68 10.0 negative automatic P 24 10157.0328 2.39043 0.0788415
IU.COLA.BHZ.00 2022-12-28T16:47:27.17 10.0 negative automatic P 16 10154.6796 -0.0339676 0.0822756
US.WVOR.BHZ.00 2022-12-28T16:47:24.73 10.0 positive automatic P 44 10026.3303 2.70002 0.083897
IU.ULN.BHZ.00 2022-12-28T16:47:18.87 10.0 positive automatic P 323 9979.788 -1.24882 0.0925405
IU.YAK.BHZ.00 2022-12-28T16:47:15.82 10.0 positive automatic P 342 9946.1217 -2.61619 0
BK.CMB.BHZ.00 2022-12-28T16:47:08.67 10.0 positive automatic P 47 9656.9889 2.50409 0.113073
GE.SNAA.BHZ. 2022-12-28T16:47:05.41 10.0 positive automatic P 182 9666.8124 -1.21317 0.109862
II.KDAK.BHZ.00 2022-12-28T16:46:54.44 10.0 positive automatic P 18 9367.4565 1.33488 0.131705
GE.GSI.BHZ. 2022-12-28T16:46:08.02 10.0 positive automatic PcP 277 8390.1015 2.53225 0.204023
MY.IPM.BHZ. 2022-12-28T16:45:54.97 10.0 negative automatic P 282 8174.928 0.713661 0.176313
IU.YSS.BHZ.00 2022-12-28T16:45:49.05 10.0 positive automatic P 340 8092.1664 -0.789467 0.212132
JP.JKA.BHZ. 2022-12-28T16:45:36.05 10.0 negative automatic PcP 337 7529.4297 -9.40816 0
MY.KOM.BHZ. 2022-12-28T16:45:33.42 10.0 negative automatic P 280 7769.3562 1.16522 0
IU.QSPA.BHZ.00 2022-12-28T16:45:24.22 10.0 positive automatic P 180 7634.2137 -0.98652 0.281962
JP.JTM.BHZ. 2022-12-28T16:45:21.25 10.0 negative automatic P 336 7561.6974 0.598601 0.303362
IU.MAJO.BHZ.00 2022-12-28T16:45:03.77 10.0 negative automatic P 331 7297.2288 -1.75764 0.304356
JP.JOW.BHZ. 2022-12-28T16:44:54.30 10.0 positive automatic P 317 7072.9644 1.99529 0.368649
IU.SBA.BHZ.00 2022-12-28T16:44:04.62 10.0 positive automatic P 181 6297.8181 0.19333 0.443547
AU.MORW.BHZ. 2022-12-28T16:43:17.47 10.0 positive automatic P 249 5600.1387 -0.889929 0.546327
IU.NWAO.BHZ.00 2022-12-28T16:43:08.40 10.0 negative automatic P 244 5467.5936 -0.893941 0.565959
GE.SANI.BHZ. 2022-12-28T16:43:01.62 10.0 negative automatic P 287 5361.3111 -0.251229 0.556087
IU.MBWA.BHZ.00 2022-12-28T16:43:00.15 10.0 positive automatic P 260 5340.3543 -0.290656 0.599062
GE.SOEI.BHZ. 2022-12-28T16:42:51.72 10.0 negative automatic P 277 5195.6436 1.28236 0
AU.FORT.BHZ.00 2022-12-28T16:41:54.58 10.0 negative automatic P 247 4442.3643 -0.937899 0.765098
AU.WRKA.BHZ.00 2022-12-28T16:41:53.00 10.0 negative automatic P 256 4420.9302 -0.987699 0.733154
AU.MTN.BHZ.00 2022-12-28T16:41:49.48 10.0 negative automatic P 275 4377.729 -1.18308 0.349916
AU.KDU.BHZ.00 2022-12-28T16:41:39.75 10.0 negative automatic P 276 4245.1173 -0.877188 0.360707
II.WRAB.BHZ.00 2022-12-28T16:41:08.97 10.0 positive automatic P 265 3861.0462 -2.17426 0.803435
AU.TOO.BHZ.00 2022-12-28T16:40:11.83 10.0 positive automatic P 228 3093.792 1.47394 0.963855
AU.QLP.BHZ. 2022-12-28T16:39:48.52 10.0 positive automatic P 252 2833.2639 -0.599386 0.963855
NZ.ODZ.HHZ.10 2022-12-28T16:39:33.86 10.0 negative automatic P 182 2652.678 -0.454904 0.888889
IU.CTAO.BHZ.00 2022-12-28T16:39:31.35 10.0 positive automatic P 268 2629.7787 -1.09652 0.816327
AU.RIV.BHZ. 2022-12-28T16:39:17.72 10.0 positive automatic P 231 2445.0636 2.8137 0.97561
NZ.KHZ.HHZ.10 2022-12-28T16:39:06.40 10.0 positive automatic P 176 2366.7642 -0.935988 0.869565
AU.ARMA.BHZ. 2022-12-28T16:38:56.65 10.0 negative automatic P 239 2237.4048 1.74728 0.963855
IU.SNZO.BHZ.00 2022-12-28T16:38:56.22 10.0 positive automatic P 173 2255.9973 -0.322518 0.930233
AU.EIDS.BHZ. 2022-12-28T16:38:46.35 10.0 positive automatic P 253 2138.4816 1.33995 0.91954
NZ.URZ.HHZ.10 2022-12-28T16:38:29.01 10.0 positive automatic P 166 1970.9049 1.52458 0.892857
IU.HNR.BHZ.00 2022-12-28T16:38:06.97 10.0 positive automatic P 315 1798.1001 -0.895151 0.869565
NZ.OUZ.HHZ.10 2022-12-28T16:37:41.16 10.0 positive automatic P 173 1573.3029 0.273144 0.813008
AU.NFK.BHZ.00 2022-12-28T16:36:21.14 10.0 positive automatic P 202 948.1953 -2.71617 0.869565
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