Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.2 on date 18-05-2018 and time 03:45:31 (Italy) in region South of Kermadec Islands [Sea]

A magnitude Mwp 6.2 earthquake occured in region: South of Kermadec Islands [Sea], on

  • 18-05-2018 01:45:31 (UTC)
  • 18-05-2018 03:45:31 (UTC +02:00) Italian time
  • 18-05-2018 13:45:31 (UTC +12:00) local time in the region of the earthquake (Pacific/Auckland)

and geographic coordinates (lat, lon) -34.69, -178.01 at 11 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
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
Rev 100 mb 5.6
Mwp 6.2
Mwpd 6.3 		2018-05-18
01:45:31		 -34.69 -178.01 11 2018-05-18
02:00:08		 Sala Sismica INGV-Roma 56969241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-18 01:45:31
Latitude -34.69
Longitude -178.01
Depth (km) 11 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 56969241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 25627
Semi-minor axis of confidence ellipse (meter) 16242
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 303
Circular confidence region, given by single value of horizontal uncertainty (meter) 20685.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102.088
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.77214
Epicentral distance of station closest to the epicenter (degree) 5.29981
Epicentral distance of station farthest from the epicenter (degree) 81.6442
Number of stations at which the event was observed 51
Number of stations from which data was used for origin computation 51
Magnitudes information

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 20
Type of magnitude Mwpd
Reference to an origin 56969241
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-05-18 02:00:08

Mwp:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 26
Type of magnitude Mwp
Reference to an origin 56969241
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-05-18 02:00:08

mb:5.6

Field Value
Value 5.6
Uncertainty 0.1
Num. used stations 40
Type of magnitude mb
Reference to an origin 56969241
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-05-18 02:00:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
G.INU.BHZ.00 2018-05-18T01:57:46.16 10.0 negative automatic P 324 81.6442 -1.86525 0.152798
GE.MNAI.BHZ. 2018-05-18T01:57:33.32 10.0 positive automatic P 273 78.5018 2.26283 0
GE.PMBI.BHZ. 2018-05-18T01:57:29.27 10.0 positive automatic P 275 77.9017 1.5566 0
C1.LL02.BHZ. 2018-05-18T01:57:27.65 10.0 negative automatic P 134 77.1315 4.18853 0.202883
G.COYC.BHZ.00 2018-05-18T01:57:19.85 10.0 positive automatic P 136 75.6093 5.04529 0.218466
GE.SNAA.BHZ. 2018-05-18T01:57:05.41 10.0 positive automatic P 178 73.5792 2.28551 0.234561
JP.JCJ.BHZ. 2018-05-18T01:56:52.25 10.0 negative automatic P 323 72.3523 -3.48725 0.23168
MY.LDM.BHZ. 2018-05-18T01:56:51.07 10.0 negative automatic P 290 71.6866 -0.68378 0
IU.PMSA.BHZ.00 2018-05-18T01:56:34.67 10.0 negative automatic P 155 68.1235 4.84952 0.296431
GE.JAGI.BHZ. 2018-05-18T01:56:21.72 10.0 positive automatic P 276 67.0011 -1.03093 0.303009
GE.LUWI.BHZ. 2018-05-18T01:56:05.22 10.0 negative automatic P 288 64.4591 -1.10169 0.326845
IU.MIDW.BHZ.00 2018-05-18T01:55:55.77 10.0 positive automatic P 1 62.9079 -0.315823 0.366602
GE.SANI.BHZ. 2018-05-18T01:55:43.37 10.0 negative automatic P 289 61.3208 -2.06572 0.392844
AU.GIRL.BHZ. 2018-05-18T01:55:34.02 10.0 positive automatic P 262 59.5711 0.522012 0.417689
GE.SOEI.BHZ. 2018-05-18T01:55:22.62 10.0 negative automatic P 281 58.045 -0.425731 0.293319
IU.MBWA.BHZ.00 2018-05-18T01:55:05.45 10.0 positive automatic P 267 55.7746 -1.35555 0.452659
GE.FAKI.BHZ. 2018-05-18T01:55:05.77 10.0 negative automatic P 293 55.963 -2.36782 0.421184
IU.WAKE.BHZ.00 2018-05-18T01:55:05.70 10.0 negative automatic P 342 55.9071 -2.02095 0.21793
AU.MORW.BHZ. 2018-05-18T01:55:02.52 10.0 negative automatic P 256 55.2857 -0.778228 0.48756
IU.NWAO.BHZ.00 2018-05-18T01:54:44.82 10.0 negative automatic P 252 52.8546 -0.744932 0.474904
IU.CASY.BHZ.00 2018-05-18T01:54:35.17 10.0 positive automatic P 209 51.2198 1.83806 0.450277
AU.MTN.BHZ. 2018-05-18T01:54:28.57 10.0 negative automatic P 282 50.7552 -1.28593 0.255903
AU.KDU.BHZ. 2018-05-18T01:54:20.45 10.0 negative automatic P 284 49.7714 -1.94559 0.474822
AU.WRKA.BHZ. 2018-05-18T01:53:59.62 10.0 negative automatic P 267 46.9973 -1.47093 0.633719
AU.FORT.BHZ. 2018-05-18T01:53:44.07 10.0 positive automatic P 259 44.9904 -1.11742 0.662228
IU.SBA.BHZ.00 2018-05-18T01:53:39.87 10.0 negative automatic P 185 43.6618 5.33578 0.647696
GT.VNDA.BHZ.00 2018-05-18T01:53:38.90 10.0 negative automatic P 186 43.7308 3.79419 0.661521
IU.XMAS.BHZ.00 2018-05-18T01:53:19.57 10.0 negative automatic P 32 41.4934 2.66571 0.65645
AU.RABL.BHZ. 2018-05-18T01:53:11.82 10.0 negative automatic P 311 41.1453 -2.26494 0.708695
AU.COEN.BHZ. 2018-05-18T01:53:09.40 10.0 negative automatic P 291 40.6174 -0.341733 0.718525
IU.TARA.BHZ.00 2018-05-18T01:52:37.40 10.0 negative automatic P 345 37.0331 -2.24555 0.778023
AU.HTT.BHZ. 2018-05-18T01:52:25.95 10.0 negative automatic P 259 35.4222 -0.0348783 0.809479
AU.NIUE.BHZ. 2018-05-18T01:52:23.92 10.0 positive automatic S 27 17.1831 -15.8539 0
IU.CTAO.BHZ.00 2018-05-18T01:52:19.82 10.0 positive automatic P 285 34.6796 0.298617 0.814825
AU.QLP.BHZ. 2018-05-18T01:52:07.50 10.0 positive automatic P 274 33.2693 0.250983 0.872551
AU.TOO.BHZ. 2018-05-18T01:51:35.75 10.0 positive automatic P 254 29.4304 2.23353 0.941176
II.TAU.BHZ.00 2018-05-18T01:51:22.92 10.0 negative automatic P 242 28.0134 2.09228 0.909091
AU.EIDS.BHZ. 2018-05-18T01:51:22.75 10.0 positive automatic P 281 28.1978 0.260048 0.941176
G.CAN.BHZ.00 2018-05-18T01:51:12.80 10.0 negative automatic P 259 26.9023 1.84087 0.930233
AU.ARMA.BHZ. 2018-05-18T01:51:03.82 10.0 negative automatic P 271 25.8403 2.38386 0.888889
AU.RIV.BHZ. 2018-05-18T01:51:01.87 10.0 positive automatic P 263 25.3926 4.67712 0.43956
NZ.ODZ.HHZ.10 2018-05-18T01:50:59.39 10.0 negative automatic S 217 13.4974 -10.756 0
AU.LHI.BHZ. 2018-05-18T01:49:58.55 10.0 negative automatic P 273 19.4191 2.47278 0.952381
G.DZM.BHZ.00 2018-05-18T01:49:48.00 10.0 negative automatic P 309 18.5621 1.19425 0.952381
ND.ONTNC.BHZ.00 2018-05-18T01:49:45.95 10.0 negative automatic P 308 18.3861 1.22722 0.952381
II.MSVF.BHZ.00 2018-05-18T01:49:29.32 10.0 negative automatic P 347 17.3055 -2.20303 0.952381
AU.NIUE.BHZ. 2018-05-18T01:49:29.32 10.0 negative automatic P 27 17.1831 -0.55425 0.941176
AU.NFK.BHZ. 2018-05-18T01:48:41.12 10.0 negative automatic P 291 13.1822 4.12058 0.888889
NZ.ODZ.HHZ.10 2018-05-18T01:48:35.53 10.0 positive automatic P 217 13.4974 -5.78773 0.97561
NZ.KHZ.HHZ.10 2018-05-18T01:47:50.05 10.0 negative automatic P 218 10.1521 -5.47996 0.980392
NZ.OUZ.HHZ.10 2018-05-18T01:47:10.01 10.0 positive automatic P 263 6.8946 -0.840018 0.980392
IU.RAO.BHZ.00 2018-05-18T01:46:48.42 10.0 positive automatic P 1 5.4474 -2.55141 0.952381
NZ.URZ.HHZ.10 2018-05-18T01:46:46.34 10.0 negative automatic P 226 5.2998 -2.6155 0.980392
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