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(km) Takeoff_angle Residual Weight
IU.INCN.BHZ.00 2023-03-16T01:08:41.57 10.0 positive automatic P 318 9571.1193 0.07258 0
G.PEL.BHZ.00 2023-03-16T01:08:39.90 10.0 positive automatic P 126 9476.3475 2.5276 0.125457
BK.MCCM.BHZ.00 2023-03-16T01:08:32.87 10.0 positive automatic P 39 9403.1652 -1.07376 0.12348
G.AIS.BHZ.00 2023-03-16T01:08:30.00 10.0 negative automatic PcP 230 9220.215 -0.169992 0
AT.SMY.BHZ. 2023-03-16T01:08:25.54 10.0 positive automatic P 354 9265.0923 -2.07327 0.138822
GT.PLCA.BHZ.00 2023-03-16T01:08:19.83 10.0 positive automatic P 132 9024.0891 3.39341 0.167061
JP.JGF.BHZ. 2023-03-16T01:08:02.45 10.0 positive automatic P 323 8766.8577 -1.38673 0.172319
IU.ADK.BHZ.00 2023-03-16T01:08:18.70 10.0 positive automatic P 360 9124.755 -2.36371 0.132871
IU.TATO.BHZ.00 2023-03-16T01:08:15.22 10.0 positive automatic P 306 9015.9195 -0.668796 0.0755753
JP.JSG.BHZ. 2023-03-16T01:08:11.50 10.0 positive automatic PcP 323 8639.6406 4.14032 0
GE.MNAI.BHZ. 2023-03-16T01:08:11.47 10.0 positive automatic P 271 8852.9382 3.46852 0
C1.LL02.BHZ. 2023-03-16T01:08:08.30 10.0 positive automatic P 134 8787.8589 3.46018 0.174509
JP.YOJ.BHZ. 2023-03-16T01:08:08.35 10.0 positive automatic P 306 8862.6729 -0.104107 0.164683
IU.MAJO.BHZ.00 2023-03-16T01:08:04.17 10.0 positive automatic P 324 8799.8691 -1.27159 0.16598
C1.MG02.BHZ. 2023-03-16T01:07:50.43 10.0 positive automatic PcP 143 8394.3972 -7.3795 0
G.INU.BHZ.00 2023-03-16T01:08:02.81 10.0 positive automatic P 323 8763.8607 -0.802374 0.184887
GE.SNAA.BHZ. 2023-03-16T01:08:01.51 10.0 positive automatic PcP 178 8646.7557 -6.25161 0
G.COYC.BHZ.00 2023-03-16T01:08:00.95 10.0 positive automatic PcP 136 8634.2016 -6.22006 0
JP.JHJ2.BHZ. 2023-03-16T01:07:44.75 10.0 positive automatic P 323 8410.3923 -1.00919 0.19364
JP.JMZ.BHZ. 2023-03-16T01:07:43.35 10.0 positive automatic P 312 8356.0689 0.403518 0.211722
C.GO10.BHZ. 2023-03-16T01:07:44.43 10.0 negative automatic PcP 143 8268.39 -8.58631 0
AU.MAW.BHZ. 2023-03-16T01:07:33.53 10.0 positive automatic PcP 200 8061.1197 -11.3833 0
IU.PMSA.BHZ.00 2023-03-16T01:07:26.17 10.0 positive automatic P 155 7937.6322 5.44778 0.121466
GE.JAGI.BHZ. 2023-03-16T01:07:00.42 10.0 negative automatic P 273 7554.6045 0.930279 0.277698
II.KAPI.BHZ.00 2023-03-16T01:06:40.67 10.0 positive automatic P 279 7214.5449 0.759031 0
GE.LUWI.BHZ. 2023-03-16T01:06:37.37 10.0 positive automatic P 285 7167.1812 0.293765 0.311516
AU.GIRL.BHZ.00 2023-03-16T01:06:21.75 10.0 positive automatic P 259 6844.2933 2.17562 0
GE.SANI.BHZ. 2023-03-16T01:06:14.87 10.0 positive automatic P 286 6808.0185 -0.68597 0.383391
GE.MMRI.BHZ. 2023-03-16T01:06:13.17 10.0 positive automatic P 277 6774.0525 -0.327462 0.277766
GE.SOEI.BHZ. 2023-03-16T01:05:59.82 10.0 positive automatic P 277 6519.3186 1.94736 0
II.RPN.BHZ.00 2023-03-16T01:05:57.07 10.0 positive automatic sP 105 6436.9788 2.74873 0
IU.MIDW.BHZ.00 2023-03-16T01:05:54.22 10.0 positive automatic P 359 6498.6726 -2.1777 0.39917
AU.MORW.BHZ. 2023-03-16T01:05:52.65 10.0 positive automatic P 253 6415.5891 1.4402 0.448829
IU.MBWA.BHZ.00 2023-03-16T01:05:50.02 10.0 positive automatic P 263 6389.4486 0.491934 0.412606
IU.GUMO.BHZ.00 2023-03-16T01:05:48.92 10.0 positive automatic P 314 6395.5314 -0.990208 0.205927
GE.BNDI.BHZ. 2023-03-16T01:05:42.97 10.0 positive automatic P 286 6294.7101 -0.485343 0.429155
IU.CASY.BHZ.00 2023-03-16T01:05:41.02 10.0 negative automatic P 208 6184.9311 2.8121 0
IU.NWAO.BHZ.00 2023-03-16T01:05:38.32 10.0 positive automatic P 249 6174.4638 2.54016 0.43492
GE.FAKI.BHZ. 2023-03-16T01:05:35.22 10.0 positive automatic P 289 6181.1904 -0.95352 0.37674
G.KIP.BHZ.00 2023-03-16T01:05:27.10 10.0 positive automatic P 21 6068.1591 -1.71946 0.491201
AU.FITZ.BHZ. 2023-03-16T01:05:23.03 10.0 positive automatic P 269 5962.9422 1.12792 0.506132
AU.MTN.BHZ.00 2023-03-16T01:05:04.10 10.0 positive automatic P 278 5699.9166 -0.231797 0.550996
AU.KDU.BHZ.00 2023-03-16T01:04:56.08 10.0 positive automatic P 279 5581.3242 -0.187742 0.54909
IU.SBA.BHZ.00 2023-03-16T01:04:47.12 10.0 negative automatic P 185 5342.0304 5.55138 0
GT.VNDA.BHZ.00 2023-03-16T01:04:46.70 10.0 negative automatic P 186 5352.5532 4.3987 0
AU.WRKA.BHZ.00 2023-03-16T01:04:45.83 10.0 positive automatic P 262 5418.5538 0.64717 0.535918
AU.FORT.BHZ.00 2023-03-16T01:04:34.88 10.0 positive automatic P 255 5254.8732 1.18642 0.598187
II.KWJN.BHZ.00 2023-03-16T01:03:54.85 10.0 positive automatic P 336 4720.2417 -0.455627 0
GE.PMG.BHZ.00 2023-03-16T01:03:33.77 10.0 positive automatic P 294 4427.9898 0.116112 0.715316
IU.CTAO.BHZ.00 2023-03-16T01:02:55.80 10.0 positive automatic P 278 3902.1939 2.22118 0.824024
AU.QLP.BHZ. 2023-03-16T01:02:51.85 10.0 positive automatic P 266 3848.3034 2.48472 0.863906
AU.TOO.BHZ.00 2023-03-16T01:02:32.75 10.0 negative automatic P 247 3577.3413 2.89629 0
II.TAU.BHZ.00 2023-03-16T01:02:29.07 10.0 negative automatic P 236 3489.7068 6.15396 0
IU.HNR.BHZ.00 2023-03-16T01:02:11.80 10.0 negative automatic P 308 3373.8672 -0.109903 0
NZ.KHZ.HHZ.10 2023-03-16T01:02:08.10 10.0 negative automatic S 211 1614.4284 2.21909 0
G.CAN.BHZ.00 2023-03-16T01:02:08.05 10.0 negative automatic P 251 3261.2688 3.32635 0
AU.MILA.BHZ.00 2023-03-16T01:02:07.43 10.0 negative automatic P 247 3251.856 3.4561 0
AU.EIDS.BHZ. 2023-03-16T01:02:03.12 10.0 positive automatic P 272 3230.5995 2.62353 0.941176
AU.RIV.BHZ. 2023-03-16T01:01:55.02 10.0 positive automatic P 254 3066.3861 5.9327 0
AU.ARMA.BHZ. 2023-03-16T01:01:51.32 10.0 positive automatic P 262 3054.5757 3.18681 0
G.PPTF.BHZ.00 2023-03-16T01:01:45.80 10.0 positive automatic P 69 3052.2558 -0.451866 0.888889
IU.SNZO.BHZ.00 2023-03-16T01:01:30.52 10.0 negative automatic S 211 1458.3291 -1.05287 0
IU.FUNA.BHZ.00 2023-03-16T01:00:54.07 10.0 negative automatic P 348 2463.1566 -1.80285 0.930233
ND.KOUNC.BHZ.00 2023-03-16T01:00:36.20 10.0 positive automatic P 295 2217.3582 2.41825 0
NZ.ODZ.HHZ.10 2023-03-16T01:00:07.70 10.0 negative automatic P 211 1987.1553 -0.855218 0.970874
ND.ONTNC.BHZ.00 2023-03-16T01:00:07.05 10.0 positive automatic P 293 1923.9408 3.79983 0
IU.RAR.BHZ.00 2023-03-16T01:00:00.22 10.0 positive automatic P 62 1939.059 -2.92093 0.987654
ND.MARNC.BHZ.00 2023-03-16T00:59:57.00 10.0 positive automatic P 299 1838.5374 3.44411 0
NZ.KHZ.HHZ.10 2023-03-16T00:59:23.05 10.0 positive automatic P 211 1614.4284 -2.12656 0.97561
IU.SNZO.BHZ.00 2023-03-16T00:59:05.02 10.0 negative automatic P 211 1458.3291 -0.975699 0.987654
NZ.OUZ.HHZ.10 2023-03-16T00:58:28.96 10.0 positive automatic P 237 1082.1612 7.55014 0
NZ.URZ.HHZ.10 2023-03-16T00:58:19.62 10.0 positive automatic P 212 1063.9017 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