Earthquake with magnitude of Mwp 6.3 on date 05-03-2021 and time 15:24:49 (Italy) in region New Zealand [Sea]

A magnitude Mwp 6.3 earthquake occured in region: New Zealand [Sea], on

  • 05-03-2021 14:24:49 (UTC)
  • 05-03-2021 15:24:49 (UTC +01:00) Italian time
  • 06-03-2021 03:24:49 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -29.23, -175.79 at 15 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 5.5
Mwp 6.3

Mwpd 6.5
2021-03-05
14:24:49
-29.23 -175.79 15 2021-03-05
14:46:36
Sala Sismica INGV-Roma 87780421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-05 14:24:49
Latitude -29.23
Longitude -175.79
Depth (km) 15 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 87780421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 22757
Semi-minor axis of confidence ellipse (meter) 3454
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 347
Circular confidence region, given by single value of horizontal uncertainty (meter) 18379
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178.394
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.57565
Epicentral distance of station closest to the epicenter (degree) 1.86713
Epicentral distance of station farthest from the epicenter (degree) 58.20214
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

Mwpd:6.5

Field Value
Value 6.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude Mwpd
Reference to an origin 87780421
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-05 14:46:36

Mwp:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 12
Type of magnitude Mwp
Reference to an origin 87780421
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-05 14:46:36

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 21
Type of magnitude mb
Reference to an origin 87780421
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-05 14:46:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.MBWA.BHZ.00 2021-03-05T14:34:39.00 10.0 positive automatic P 262 58.2021 -1.55025 0
IU.CASY.BHZ.00 2021-03-05T14:34:38.52 10.0 negative automatic sP 207 56.9234 0.689841 0
IU.CASY.BHZ.00 2021-03-05T14:34:38.32 10.0 positive automatic P 207 56.9234 5.8135 0.456573
IU.GUMO.BHZ.00 2021-03-05T14:34:32.50 10.0 positive automatic P 313 57.2268 -2.18682 0
GE.FAKI.BHZ. 2021-03-05T14:34:21.67 10.0 positive automatic P 288 55.8101 -2.92374 0.355131
GE.BNDI.BHZ. 2021-03-05T14:34:30.22 10.0 positive automatic P 285 56.8989 -2.11324 0
AU.COEN.BHZ. 2021-03-05T14:34:19.90 10.0 negative automatic PcP 283 40.8327 -9.92895 0
AU.MTN.BHZ.00 2021-03-05T14:33:52.10 10.0 positive automatic P 277 51.7058 -2.44046 0.502698
GT.VNDA.BHZ.00 2021-03-05T14:33:48.65 10.0 positive automatic sP 186 49.3655 6.50164 0
AU.KDU.BHZ.00 2021-03-05T14:33:43.88 10.0 positive automatic P 278 50.6179 -2.48436 0.525296
AU.WRKA.BHZ.00 2021-03-05T14:33:35.70 10.0 positive automatic P 261 49.4737 -2.07369 0.520048
AU.FORT.BHZ.00 2021-03-05T14:33:26.65 10.0 positive automatic P 253 48.1244 -0.679866 0.606048
II.WRAB.BHZ.00 2021-03-05T14:33:08.10 10.0 positive automatic P 270 45.9349 -2.16951 0.294104
AU.MANU.BHZ.00 2021-03-05T14:32:55.00 10.0 positive automatic P 301 44.3271 -2.45375 0.427166
AU.HTT.BHZ. 2021-03-05T14:32:10.50 10.0 positive automatic P 252 38.6098 -0.15082 0.793226
IU.CTAO.BHZ.00 2021-03-05T14:31:43.70 10.0 positive automatic P 276 35.5155 -0.595374 0.763552
II.TAU.BHZ.00 2021-03-05T14:31:20.47 10.0 negative automatic P 235 32.4703 2.6589 0.899545
IU.TARA.BHZ.00 2021-03-05T14:31:16.75 10.0 positive automatic P 339 32.4326 -0.715096 0.822052
G.CAN.BHZ.00 2021-03-05T14:31:00.15 10.0 positive automatic P 249 30.2243 1.72079 0.925652
AU.MILA.BHZ.00 2021-03-05T14:30:59.83 10.0 positive automatic P 246 30.1905 1.98021 0.437735
IU.HNR.BHZ.00 2021-03-05T14:30:56.20 10.0 positive automatic P 306 30.1278 -0.97747 0.938614
AU.EIDS.BHZ. 2021-03-05T14:30:51.00 10.0 positive automatic P 269 29.5922 -0.456635 0.963855
IU.SNZO.BHZ.00 2021-03-05T14:30:42.52 10.0 positive automatic S 210 14.3367 -5.44553 0
AU.ARMA.BHZ. 2021-03-05T14:30:41.72 10.0 positive automatic P 259 28.1928 1.54917 0.43956
AU.LHI.BHZ.00 2021-03-05T14:29:40.45 10.0 positive automatic P 258 21.7692 1.29933 0.941176
G.SANVU.BHZ.00 2021-03-05T14:29:24.25 10.0 positive automatic P 308 20.8639 -5.15237 0.43956
ND.KOUNC.BHZ.00 2021-03-05T14:29:20.35 10.0 negative automatic P 291 20.0082 0.232961 0.97561
NZ.ODZ.HHZ.10 2021-03-05T14:29:08.11 10.0 positive automatic P 210 19.1002 -2.11804 0.97561
IU.AFI.BHZ.00 2021-03-05T14:28:29.45 10.0 positive automatic P 14 15.7628 -0.11245 0.91954
NZ.KHZ.HHZ.10 2021-03-05T14:28:26.43 10.0 negative automatic P 210 15.7426 -2.75568 0.325203
AU.NFK.BHZ.00 2021-03-05T14:28:10.44 10.0 positive automatic P 267 14.2021 1.83013 0.328947
II.MSVF.BHZ.00 2021-03-05T14:27:48.17 10.0 positive automatic P 333 12.7904 -1.27347 0.833333
AU.NIUE.BHZ. 2021-03-05T14:27:34.27 10.0 positive automatic P 29 11.4695 3.00366 0.97561
NZ.OUZ.HHZ.10 2021-03-05T14:27:24.77 10.0 positive automatic P 234 10.7846 2.88816 0.109469
NZ.URZ.HHZ.10 2021-03-05T14:27:20.02 10.0 positive automatic P 211 10.7815 -1.82919 0.163399
IU.RAO.BHZ.00 2021-03-05T14:25:14.77 10.0 negative automatic P 269 1.8671 -4.67408 0.087241
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download