ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Mwp 6.0 on date 20-09-2017 and time 03:43:30 (Italy) in region New Zealand [Sea]

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

  • 20-09-2017 01:43:30 (UTC)
  • 20-09-2017 03:43:30 (UTC +02:00) Italian time
  • 20-09-2017 12:43:30 (UTC +11:00) local time in the region of the earthquake (Antarctica/Macquarie)

and geographic coordinates (lat, lon) -50.53, 162.56 at 10 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
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 5.3
Mwp 6.0

Mwpd 6.0
2017-09-20
01:43:30
-50.53 162.57 10 2017-09-20
02:21:42
Sala Sismica INGV-Roma 50272511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-09-20 01:43:30
Latitude -50.53
Longitude 162.57
Depth (km) 10 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 50272511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 29066
Semi-minor axis of confidence ellipse (meter) 13510
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 175
Circular confidence region, given by single value of horizontal uncertainty (meter) 23460.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118.895
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.68683
Epicentral distance of station closest to the epicenter (degree) 4.53089
Epicentral distance of station farthest from the epicenter (degree) 57.46827
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 32
Magnitudes information

Mwpd:6

Field Value
Value 6
Uncertainty 0
Num. used stations 3
Type of magnitude Mwpd
Reference to an origin 50272511
Agency INGV
Autore Auto added
Time of creation (UTC) 2017-09-20 02:21:42

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 10
Type of magnitude Mwp
Reference to an origin 50272511
Agency INGV
Autore Auto added
Time of creation (UTC) 2017-09-20 02:21:42

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 26
Type of magnitude mb
Reference to an origin 50272511
Agency INGV
Autore Auto added
Time of creation (UTC) 2017-09-20 02:21:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.SNAA.BHZ. 2017-09-20T01:53:18.26 10.0 negative automatic P 185 57.3552 1.44918 0.439621
GE.SANI.BHZ. 2017-09-20T01:53:14.37 10.0 positive automatic P 315 57.4683 -3.09727 0.206953
GE.FAKI.BHZ. 2017-09-20T01:52:51.47 10.0 positive automatic P 321 54.031 -1.3542 0.32386
AU.MAW.BHZ. 2017-09-20T01:52:08.76 10.0 positive automatic P 211 47.6997 3.65835 0.553476
AU.MTN.BHZ. 2017-09-20T01:51:46.37 10.0 positive automatic P 315 45.5395 -1.82033 0.581935
AU.KDU.BHZ. 2017-09-20T01:51:43.80 10.0 negative automatic P 316 45.0813 -0.747987 0.615858
IU.MBWA.BHZ.00 2017-09-20T01:51:39.97 10.0 negative automatic P 295 44.4891 0.119754 0.655427
IU.RAR.BHZ.00 2017-09-20T01:51:19.87 10.0 positive automatic P 59 41.5448 3.89409 0.669946
AU.MORW.BHZ. 2017-09-20T01:51:09.52 10.0 positive automatic P 284 40.7692 -0.119811 0.750398
AU.COEN.BHZ. 2017-09-20T01:51:01.15 10.0 positive automatic P 330 39.8166 -0.598643 0.481449
II.WRAB.BHZ.00 2017-09-20T01:50:42.97 10.0 positive automatic P 314 37.8322 -2.15082 0.789679
IU.CTAO.BHZ.00 2017-09-20T01:50:03.47 10.0 positive automatic P 331 33.0597 -0.614644 0.827976
IU.CASY.BHZ.00 2017-09-20T01:49:41.12 10.0 positive automatic P 219 30.2189 2.08772 0.884623
ND.KOUNC.BHZ.00 2017-09-20T01:49:36.59 10.0 positive automatic P 3 30.0124 -0.630973 0.975527
G.DZM.BHZ.00 2017-09-20T01:49:24.90 10.0 positive automatic P 8 28.6225 -0.13049 0.952381
ND.ONTNC.BHZ.00 2017-09-20T01:49:23.85 10.0 positive automatic P 8 28.3886 1.04047 0.869565
IU.SBA.BHZ.00 2017-09-20T01:49:17.32 10.0 positive automatic P 178 27.3591 3.71774 0.898876
AU.EIDS.BHZ. 2017-09-20T01:49:07.80 10.0 positive automatic P 336 26.6703 0.363276 0.43956
AU.HTT.BHZ. 2017-09-20T01:48:50.12 10.0 negative automatic P 306 24.32 3.93197 0.952381
AU.ARMA.BHZ. 2017-09-20T01:48:20.47 10.0 positive automatic P 334 21.7119 0.733559 0.930233
AU.LHI.BHZ. 2017-09-20T01:47:52.90 10.0 positive automatic P 351 19.1901 0.697327 0.43956
AU.RIV.BHZ. 2017-09-20T01:47:46.82 10.0 positive automatic P 329 18.6701 0.339646 0.43956
G.CAN.BHZ.00 2017-09-20T01:47:41.15 10.0 positive automatic P 322 18.107 1.10519 0.43956
AU.TOO.BHZ. 2017-09-20T01:47:38.62 10.0 positive automatic P 310 17.7646 2.80649 0.869565
NZ.OUZ.HHZ.10 2017-09-20T01:47:28.88 10.0 positive automatic P 32 17.2709 -0.707789 0.328407
AU.MILA.BHZ. 2017-09-20T01:47:21.45 10.0 negative automatic P 319 16.5383 0.954578 0.91954
NZ.URZ.HHZ.10 2017-09-20T01:47:12.42 10.0 positive automatic P 46 16.0226 -1.34732 0.990099
II.TAU.BHZ.00 2017-09-20T01:46:28.32 10.0 positive automatic P 300 12.8946 -3.35835 0.869565
IU.SNZO.BHZ.00 2017-09-20T01:46:26.47 10.0 positive automatic P 47 12.4746 0.538225 0.952381
NZ.KHZ.HHZ.10 2017-09-20T01:46:06.52 10.0 positive automatic P 47 11.0679 -0.16073 0.966184
NZ.ODZ.HHZ.10 2017-09-20T01:45:17.04 10.0 negative automatic P 48 7.7116 -3.67536 0.980392
AU.MCQ.BHZ. 2017-09-20T01:44:30.02 10.0 positive automatic P 208 4.5309 -6.96325 0.952381
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
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