Earthquake with magnitude of Mwp 6.0 on date 13-03-2021 and time 14:05:00 (UTC) in region Kermadec Islands, New Zealand [Sea: New Zealand]

A magnitude Mwp 6.0 earthquake occured in region: Kermadec Islands, New Zealand [Sea: New Zealand], on

  • 13-03-2021 14:05:00 (UTC)
  • 13-03-2021 15:05:00 (UTC +01:00) Italian time
  • 14-03-2021 03:05:00 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -29.728, -177.539 at 16 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
2021-03-13
14:05:00
-29.7281 -177.539 16 2021-03-13
14:28:25
Sala Sismica INGV-Roma 88082911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-13 14:05:00
Latitude -29.7281
Longitude -177.5390
Depth (km) 16 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 88082911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 19822
Semi-minor axis of confidence ellipse (meter) 14611
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 102
Circular confidence region, given by single value of horizontal uncertainty (meter) 16002.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60.5034
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 57
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 3.24337
Epicentral distance of station closest to the epicenter (degree) 0.59041
Epicentral distance of station farthest from the epicenter (degree) 86.54579
Number of stations at which the event was observed 46
Number of stations from which data was used for origin computation 46
Magnitudes information

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 13
Type of magnitude Mwpd
Reference to an origin 88082911
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-13 14:28:25

Mwp:6

Field Value
Value 6
Uncertainty 0.2
Num. used stations 14
Type of magnitude Mwp
Reference to an origin 88082911
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-13 14:28:25

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 30
Type of magnitude mb
Reference to an origin 88082911
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-13 14:28:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
G.PEL.BHZ.00 2021-03-13T14:17:43.90 10.0 positive automatic PcP 127 86.5458 0.190941 0
GE.GSI.BHZ. 2021-03-13T14:17:38.42 10.0 positive automatic P 274 86.2056 -1.11624 0
IU.YSS.BHZ.00 2021-03-13T14:17:29.60 10.0 positive automatic P 334 84.6259 -2.06457 0.0992725
IU.INCN.BHZ.00 2021-03-13T14:17:32.32 10.0 positive automatic P 319 85.1046 -1.73538 0
CI.PHL.BHZ. 2021-03-13T14:17:26.35 10.0 positive automatic P 43 84.3585 -4.00097 0.0127514
GT.PLCA.BHZ.00 2021-03-13T14:17:23.45 10.0 negative automatic PcP 133 82.4505 -2.30999 0
RM.DLV.BHZ. 2021-03-13T14:17:19.57 10.0 positive automatic P 288 82.4245 -0.966453 0
C1.LL02.BHZ. 2021-03-13T14:17:11.93 10.0 negative automatic P 135 80.3149 2.71622 0.160848
G.COYC.BHZ.00 2021-03-13T14:17:05.90 10.0 negative automatic P 137 78.92 4.29916 0.17313
JP.JSU.BHZ. 2021-03-13T14:16:57.90 10.0 positive automatic P 317 78.6611 -2.30512 0
IU.MAJO.BHZ.00 2021-03-13T14:16:55.17 10.0 positive automatic P 325 78.203 -2.50922 0.187974
G.INU.BHZ.00 2021-03-13T14:16:53.81 10.0 negative automatic P 324 77.866 -1.95159 0.191208
JP.JGF.BHZ. 2021-03-13T14:16:53.10 10.0 negative automatic P 324 77.896 -2.90609 0.178468
MY.SBM.BHZ. 2021-03-13T14:16:33.32 10.0 positive automatic P 282 74.2137 -1.65454 0.228038
AU.MAW.BHZ. 2021-03-13T14:16:28.15 10.0 negative automatic P 200 72.8329 1.337 0.248589
MY.KKM.BHZ. 2021-03-13T14:16:24.27 10.0 positive automatic P 288 72.8013 -2.49566 0.232344
GE.JAGI.BHZ. 2021-03-13T14:15:48.37 10.0 positive automatic P 273 67.0114 -2.68903 0.325296
GE.SANI.BHZ. 2021-03-13T14:15:03.17 10.0 positive automatic P 286 60.1911 -2.82886 0.390478
GE.MMRI.BHZ. 2021-03-13T14:15:02.17 10.0 positive automatic P 278 59.9426 -2.14013 0.35368
AU.MORW.BHZ. 2021-03-13T14:14:42.75 10.0 positive automatic P 253 57.0041 -1.09454 0.466924
IU.MBWA.BHZ.00 2021-03-13T14:14:39.25 10.0 positive automatic P 263 56.6267 -1.89643 0.472765
IU.CASY.BHZ.00 2021-03-13T14:14:34.92 10.0 positive automatic P 208 55.7774 -0.128354 0.474468
GE.BNDI.BHZ. 2021-03-13T14:14:30.82 10.0 positive automatic P 286 55.5662 -2.70939 0
AU.MTN.BHZ.00 2021-03-13T14:13:52.48 10.0 negative automatic P 278 50.2601 -1.9079 0.549939
GT.VNDA.BHZ.00 2021-03-13T14:13:46.23 10.0 positive automatic P 186 48.7095 3.67839 0.611113
IU.SBA.BHZ.00 2021-03-13T14:13:46.27 10.0 positive automatic sP 184 48.6419 4.25581 0.59756
AU.KDU.BHZ.00 2021-03-13T14:13:44.18 10.0 negative automatic P 279 49.1841 -2.00226 0.530649
AU.WRKA.BHZ.00 2021-03-13T14:13:34.33 10.0 negative automatic P 262 47.8928 -2.00798 0.596257
AU.FORT.BHZ.00 2021-03-13T14:13:23.83 10.0 negative automatic P 254 46.5224 -1.74648 0.650567
II.WRAB.BHZ.00 2021-03-13T14:13:07.50 10.0 positive automatic P 271 44.4166 -1.43186 0.681312
AU.HTT.BHZ. 2021-03-13T14:12:08.15 10.0 positive automatic P 253 37.007 0.320414 0.81644
IU.CTAO.BHZ.00 2021-03-13T14:11:42.97 10.0 positive automatic P 278 34.0648 0.48291 0.887886
AU.QLP.BHZ. 2021-03-13T14:11:39.75 10.0 positive automatic P 266 33.6961 0.488047 0.874418
NZ.KHZ.HHZ.10 2021-03-13T14:10:58.23 10.0 negative automatic S 207 14.5733 -6.31978 0
AU.MILA.BHZ.00 2021-03-13T14:10:58.75 10.0 positive automatic P 246 28.5959 4.31828 0.952381
G.CAN.BHZ.00 2021-03-13T14:10:58.30 10.0 negative automatic P 250 28.6226 3.64649 0.952381
AU.EIDS.BHZ. 2021-03-13T14:10:50.25 10.0 positive automatic P 271 28.0723 0.57768 0.898876
AU.ARMA.BHZ. 2021-03-13T14:10:39.05 10.0 positive automatic P 261 26.6061 2.37811 0.97561
IU.SNZO.BHZ.00 2021-03-13T14:10:21.25 10.0 negative automatic S 206 13.1753 -9.21898 0
AU.LHI.BHZ.00 2021-03-13T14:09:35.90 10.0 positive automatic P 259 20.1764 3.20922 0.43956
IU.RAR.BHZ.00 2021-03-13T14:09:11.57 10.0 positive automatic P 66 18.1261 1.62512 0.930233
NZ.ODZ.HHZ.10 2021-03-13T14:09:07.24 10.0 positive automatic P 208 17.9201 -0.214229 0.97561
IU.AFI.BHZ.00 2021-03-13T14:08:46.62 10.0 positive automatic P 20 16.6898 -5.57014 0.909091
NZ.KHZ.HHZ.10 2021-03-13T14:08:16.72 10.0 negative automatic P 207 14.5733 -7.69492 0.980392
IU.SNZO.BHZ.00 2021-03-13T14:08:05.82 10.0 positive automatic P 206 13.1753 0.468988 0.97561
II.MSVF.BHZ.00 2021-03-13T14:08:00.57 10.0 positive automatic P 340 12.6401 2.41173 0.615385
NZ.URZ.HHZ.10 2021-03-13T14:07:13.87 10.0 negative automatic P 206 9.6119 -2.72692 0.196078
IU.RAO.BHZ.00 2021-03-13T14:05:13.45 10.0 negative automatic P 325 0.5904 3.06547 0.493827
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