Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 7.0 on date 16-03-2023 and time 00:56:00 (UTC) in region New Zealand [Sea]

A magnitude Mwp 7.0 earthquake occured in region: New Zealand [Sea], on

  • 16-03-2023 00:56:00 (UTC)
  • 16-03-2023 01:56:00 (UTC +01:00) Italian time
  • 16-03-2023 13:56:00 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -30.3260, -176.3650 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 5.8
Mwp 7.0
Mwpd 7.2 		2023-03-16
00:56:00		 -30.3258 -176.365 1 2023-03-16
01:11:57		 Sala Sismica INGV-Roma 115411451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-16 00:56:00
Latitude -30.3258
Longitude -176.3650
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 115411451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 21378
Semi-minor axis of confidence ellipse (meter) 13233
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 243
Circular confidence region, given by single value of horizontal uncertainty (meter) 17257.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57.4658
Number of associated phases, regardless of their use for origin computation 88
Number of defining phases 88
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.94885
Epicentral distance of station closest to the epicenter (degree) 9.58474
Epicentral distance of station farthest from the epicenter (degree) 86.22630
Number of stations at which the event was observed 70
Number of stations from which data was used for origin computation 70
Magnitudes information

Mwpd:7.2

Field Value
Value 7.2
Uncertainty 0.1
Num. used stations 41
Type of magnitude Mwpd
Reference to an origin 115411451
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-03-16 01:11:57

Mwp:7.0

Field Value
Value 7.0
Uncertainty 0.1
Num. used stations 42
Type of magnitude Mwp
Reference to an origin 115411451
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-03-16 01:11:57

mb:5.8

Field Value
Value 5.8
Uncertainty 0.1
Num. used stations 43
Type of magnitude mb
Reference to an origin 115411451
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-03-16 01:11:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.INCN.BHZ.00 2023-03-16T01:08:41.57 10.0 positive automatic P 318 86.2263 0.07258 0
G.PEL.BHZ.00 2023-03-16T01:08:39.95 10.0 positive automatic PcP 126 85.3725 -0.474954 0
BK.MCCM.BHZ.00 2023-03-16T01:08:32.87 10.0 positive automatic P 39 84.7132 -1.07376 0.12348
G.AIS.BHZ.00 2023-03-16T01:08:30.00 10.0 positive automatic P 230 83.0650 4.47508 0.0645549
AT.SMY.BHZ. 2023-03-16T01:08:25.54 10.0 positive automatic P 354 83.4693 -2.07327 0.138822
GT.PLCA.BHZ.00 2023-03-16T01:08:19.83 10.0 positive automatic P 132 81.2981 3.39341 0.167061
JP.JGF.BHZ. 2023-03-16T01:08:02.45 10.0 positive automatic P 323 78.9807 -1.38673 0.172319
IU.ADK.BHZ.00 2023-03-16T01:08:18.70 10.0 positive automatic P 360 82.2050 -2.36371 0.132871
IU.TATO.BHZ.00 2023-03-16T01:08:15.22 10.0 positive automatic P 306 81.2245 -0.668796 0.0755753
GE.MNAI.BHZ. 2023-03-16T01:08:11.47 10.0 positive automatic P 271 79.7562 3.46852 0
JP.JSG.BHZ. 2023-03-16T01:08:11.50 10.0 positive automatic PcP 323 77.8346 4.14032 0
JP.YOJ.BHZ. 2023-03-16T01:08:08.35 10.0 positive automatic P 306 79.8439 -0.104107 0.164683
C1.LL02.BHZ. 2023-03-16T01:08:08.30 10.0 positive automatic P 134 79.1699 3.46018 0.174509
IU.MAJO.BHZ.00 2023-03-16T01:08:04.17 10.0 positive automatic P 324 79.2781 -1.27159 0.16598
C1.MG02.BHZ. 2023-03-16T01:07:50.43 10.0 positive automatic PcP 143 75.6252 -7.3795 0
G.INU.BHZ.00 2023-03-16T01:08:02.81 10.0 positive automatic P 323 78.9537 -0.802374 0.184887
GE.SNAA.BHZ. 2023-03-16T01:08:01.51 10.0 positive automatic PcP 178 77.8987 -6.25161 0
G.COYC.BHZ.00 2023-03-16T01:08:00.95 10.0 positive automatic PcP 136 77.7856 -6.22006 0
JP.JHJ2.BHZ. 2023-03-16T01:07:44.75 10.0 positive automatic P 323 75.7693 -1.00919 0.19364
JP.JMZ.BHZ. 2023-03-16T01:07:43.35 10.0 positive automatic P 312 75.2799 0.403518 0.211722
C.GO10.BHZ. 2023-03-16T01:07:44.43 10.0 negative automatic PcP 143 74.4900 -8.58631 0
AU.MAW.BHZ. 2023-03-16T01:07:33.53 10.0 positive automatic PcP 200 72.6227 -11.3833 0
IU.PMSA.BHZ.00 2023-03-16T01:07:26.17 10.0 positive automatic P 155 71.5102 5.44778 0.121466
GE.JAGI.BHZ. 2023-03-16T01:07:00.42 10.0 negative automatic P 273 68.0595 0.930279 0.277698
II.KAPI.BHZ.00 2023-03-16T01:06:40.67 10.0 positive automatic P 279 64.9959 0.759031 0
GE.LUWI.BHZ. 2023-03-16T01:06:37.37 10.0 positive automatic P 285 64.5692 0.293765 0.311516
AU.GIRL.BHZ.00 2023-03-16T01:06:21.75 10.0 positive automatic P 259 61.6603 2.17562 0
GE.SANI.BHZ. 2023-03-16T01:06:14.87 10.0 positive automatic P 286 61.3335 -0.68597 0.383391
GE.MMRI.BHZ. 2023-03-16T01:06:13.17 10.0 positive automatic P 277 61.0275 -0.327462 0.277766
GE.SOEI.BHZ. 2023-03-16T01:05:59.82 10.0 positive automatic P 277 58.7326 1.94736 0
II.RPN.BHZ.00 2023-03-16T01:05:57.07 10.0 positive automatic sP 105 57.9908 2.74873 0
IU.MIDW.BHZ.00 2023-03-16T01:05:54.22 10.0 positive automatic P 359 58.5466 -2.1777 0.39917
AU.MORW.BHZ. 2023-03-16T01:05:52.65 10.0 positive automatic P 253 57.7981 1.4402 0.448829
IU.MBWA.BHZ.00 2023-03-16T01:05:50.02 10.0 positive automatic P 263 57.5626 0.491934 0.412606
IU.GUMO.BHZ.00 2023-03-16T01:05:48.92 10.0 positive automatic P 314 57.6174 -0.990208 0.205927
GE.BNDI.BHZ. 2023-03-16T01:05:42.97 10.0 positive automatic P 286 56.7091 -0.485343 0.429155
IU.CASY.BHZ.00 2023-03-16T01:05:41.02 10.0 negative automatic P 208 55.7201 2.8121 0
IU.NWAO.BHZ.00 2023-03-16T01:05:38.32 10.0 positive automatic P 249 55.6258 2.54016 0.43492
GE.FAKI.BHZ. 2023-03-16T01:05:35.22 10.0 positive automatic P 289 55.6864 -0.95352 0.37674
G.KIP.BHZ.00 2023-03-16T01:05:27.10 10.0 positive automatic P 21 54.6681 -1.71946 0.491201
AU.FITZ.BHZ. 2023-03-16T01:05:23.03 10.0 positive automatic P 269 53.7202 1.12792 0.506132
AU.MTN.BHZ.00 2023-03-16T01:05:04.10 10.0 positive automatic P 278 51.3506 -0.231797 0.550996
AU.KDU.BHZ.00 2023-03-16T01:04:56.08 10.0 positive automatic P 279 50.2822 -0.187742 0.54909
IU.SBA.BHZ.00 2023-03-16T01:04:47.12 10.0 negative automatic P 185 48.1264 5.55138 0
GT.VNDA.BHZ.00 2023-03-16T01:04:46.70 10.0 negative automatic P 186 48.2212 4.3987 0
AU.WRKA.BHZ.00 2023-03-16T01:04:45.83 10.0 positive automatic P 262 48.8158 0.64717 0.535918
AU.FORT.BHZ.00 2023-03-16T01:04:34.88 10.0 positive automatic P 255 47.3412 1.18642 0.598187
II.KWJN.BHZ.00 2023-03-16T01:03:54.85 10.0 positive automatic P 336 42.5247 -0.455627 0
GE.PMG.BHZ.00 2023-03-16T01:03:33.77 10.0 positive automatic P 294 39.8918 0.116112 0.715316
IU.CTAO.BHZ.00 2023-03-16T01:02:55.80 10.0 positive automatic P 278 35.1549 2.22118 0.824024
AU.QLP.BHZ. 2023-03-16T01:02:51.85 10.0 positive automatic P 266 34.6694 2.48472 0.863906
AU.TOO.BHZ.00 2023-03-16T01:02:32.75 10.0 negative automatic P 247 32.2283 2.89629 0
II.TAU.BHZ.00 2023-03-16T01:02:29.07 10.0 negative automatic P 236 31.4388 6.15396 0
IU.HNR.BHZ.00 2023-03-16T01:02:11.80 10.0 negative automatic P 308 30.3952 -0.109903 0
G.CAN.BHZ.00 2023-03-16T01:02:08.05 10.0 negative automatic P 251 29.3808 3.32635 0
NZ.KHZ.HHZ.10 2023-03-16T01:02:08.10 10.0 negative automatic S 211 14.5444 2.21909 0
AU.MILA.BHZ.00 2023-03-16T01:02:07.43 10.0 negative automatic P 247 29.2960 3.4561 0
AU.EIDS.BHZ. 2023-03-16T01:02:03.12 10.0 positive automatic P 272 29.1045 2.62353 0.941176
AU.RIV.BHZ. 2023-03-16T01:01:55.02 10.0 positive automatic P 254 27.6251 5.9327 0
AU.ARMA.BHZ. 2023-03-16T01:01:51.32 10.0 positive automatic P 262 27.5187 3.18681 0
G.PPTF.BHZ.00 2023-03-16T01:01:45.80 10.0 positive automatic P 69 27.4978 -0.451866 0.888889
IU.SNZO.BHZ.00 2023-03-16T01:01:30.52 10.0 negative automatic S 211 13.1381 -1.05287 0
IU.FUNA.BHZ.00 2023-03-16T01:00:54.07 10.0 negative automatic P 348 22.1906 -1.80285 0.930233
ND.KOUNC.BHZ.00 2023-03-16T01:00:36.20 10.0 positive automatic P 295 19.9762 2.41825 0
NZ.ODZ.HHZ.10 2023-03-16T01:00:07.70 10.0 negative automatic P 211 17.9023 -0.855218 0.970874
ND.ONTNC.BHZ.00 2023-03-16T01:00:07.05 10.0 positive automatic P 293 17.3328 3.79983 0
IU.RAR.BHZ.00 2023-03-16T01:00:00.22 10.0 positive automatic P 62 17.4690 -2.92093 0.987654
ND.MARNC.BHZ.00 2023-03-16T00:59:57.00 10.0 positive automatic P 299 16.5634 3.44411 0
NZ.KHZ.HHZ.10 2023-03-16T00:59:23.05 10.0 positive automatic P 211 14.5444 -2.12656 0.97561
IU.SNZO.BHZ.00 2023-03-16T00:59:05.02 10.0 negative automatic P 211 13.1381 -0.975699 0.987654
NZ.OUZ.HHZ.10 2023-03-16T00:58:28.96 10.0 positive automatic P 237 9.7492 7.55014 0
NZ.URZ.HHZ.10 2023-03-16T00:58:19.62 10.0 positive automatic P 212 9.5847 0.464963 0
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