Earthquake with magnitude of Mwp 6.1 on date 18-04-2019 and time 16:46:04 (Italy) in region Western Indian Antarctic Ridge [Sea]

A magnitude Mwp 6.1 earthquake occured in region: Western Indian Antarctic Ridge [Sea], on

  • 18-04-2019 14:46:04 (UTC)
  • 18-04-2019 16:46:04 (UTC +02:00) Italian time
  • 19-04-2019 00:46:04 (UTC +10:00) local time in the region of the earthquake (Australia/Hobart)

and geographic coordinates (lat, lon) -51.04, 139.32 at 9 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 5.4
Mwp 6.1

Mwpd 6.3
2019-04-18
14:46:04
-51.04 139.32 9 2019-04-18
15:02:35
Sala Sismica INGV-Roma 67715371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-18 14:46:04
Latitude -51.04
Longitude 139.32
Depth (km) 9 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 67715371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 14026
Semi-minor axis of confidence ellipse (meter) 4640
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 292
Circular confidence region, given by single value of horizontal uncertainty (meter) 11401.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93.9295
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.39409
Epicentral distance of station closest to the epicenter (degree) 9.78037
Epicentral distance of station farthest from the epicenter (degree) 64.80784
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 44
Magnitudes information

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 26
Type of magnitude Mwpd
Reference to an origin 67715371
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-04-18 15:02:35

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 30
Type of magnitude Mwp
Reference to an origin 67715371
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-04-18 15:02:35

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 36
Type of magnitude mb
Reference to an origin 67715371
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-04-18 15:02:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.GUMO.BHZ.00 2019-04-18T14:56:43.07 10.0 negative automatic P 6 64.8078 1.71018 0
GE.GSI.BHZ. 2019-04-18T14:56:32.02 10.0 positive automatic P 312 63.167 1.46378 0.35877
MY.SBM.BHZ. 2019-04-18T14:55:55.97 10.0 negative automatic P 328 58.266 -1.21025 0.398599
MY.KSM.BHZ. 2019-04-18T14:55:54.67 10.0 positive automatic P 325 58.0109 -0.692388 0.369876
GE.LUWI.BHZ. 2019-04-18T14:55:10.02 10.0 negative automatic P 339 51.9162 -1.23837 0.394333
GE.SANI.BHZ. 2019-04-18T14:54:56.42 10.0 negative automatic P 343 50.2612 -2.40453 0.437512
II.KAPI.BHZ.00 2019-04-18T14:54:47.15 10.0 positive automatic P 334 48.8375 -0.869959 0.387978
GE.FAKI.BHZ. 2019-04-18T14:54:45.02 10.0 negative automatic P 351 48.4847 -0.24906 0.565693
GE.GENI.BHZ. 2019-04-18T14:54:44.47 10.0 negative automatic P 1 48.4503 -0.519166 0.453005
GE.BNDI.BHZ. 2019-04-18T14:54:34.07 10.0 negative automatic P 347 47.1782 -1.04674 0
II.MSVF.BHZ.00 2019-04-18T14:54:20.47 10.0 positive automatic P 57 45.2385 0.481425 0.649687
IU.HNR.BHZ.00 2019-04-18T14:54:16.60 10.0 positive automatic P 29 44.9247 -0.778295 0
GE.MMRI.BHZ. 2019-04-18T14:54:14.87 10.0 negative automatic P 336 44.6826 -0.576578 0.304486
GE.SOEI.BHZ. 2019-04-18T14:54:03.47 10.0 negative automatic P 338 43.0962 0.610498 0.317897
IU.PMG.BHZ.00 2019-04-18T14:53:54.27 10.0 positive automatic P 12 42.1311 -0.578057 0.659642
AU.MAW.BHZ. 2019-04-18T14:53:32.36 10.0 positive automatic P 216 39.1864 1.85659 0.754085
AU.MTN.BHZ. 2019-04-18T14:53:26.10 10.0 positive automatic P 347 38.7695 -0.941054 0.753273
AU.KDU.BHZ. 2019-04-18T14:53:25.82 10.0 negative automatic P 349 38.7532 -1.06325 0.682193
AU.COEN.BHZ. 2019-04-18T14:53:13.97 10.0 positive automatic P 6 37.212 0.0523443 0.802022
ND.KOUNC.BHZ.00 2019-04-18T14:53:05.10 10.0 positive automatic P 42 36.2237 -0.362661 0.821886
G.DZM.BHZ.00 2019-04-18T14:53:02.50 10.0 positive automatic P 46 35.8248 0.319171 0.774642
ND.ONTNC.BHZ.00 2019-04-18T14:53:00.29 10.0 positive automatic P 46 35.6241 -0.0280569 0
AU.GIRL.BHZ. 2019-04-18T14:52:52.07 10.0 negative automatic P 316 34.4156 2.16913 0.85886
AU.FITZ.BHZ. 2019-04-18T14:52:50.85 10.0 negative automatic P 337 34.6818 -1.35672 0.814575
IU.MBWA.BHZ.00 2019-04-18T14:52:42.42 10.0 positive automatic P 326 33.5765 -0.204948 0.88685
NZ.URZ.HHZ.10 2019-04-18T14:52:03.55 10.0 positive automatic P 79 29.3461 -1.83191 0.328407
IU.SBA.BHZ.00 2019-04-18T14:52:00.72 10.0 positive automatic P 168 28.6418 1.6008 0.879121
AU.MORW.BHZ. 2019-04-18T14:51:52.97 10.0 positive automatic P 313 28.0372 -0.804136 0.930233
GT.VNDA.BHZ.00 2019-04-18T14:51:50.00 10.0 positive automatic P 170 27.7801 -1.44647 0.952381
AU.WRKA.BHZ. 2019-04-18T14:51:46.82 10.0 negative automatic P 338 27.3424 -0.790907 0.869565
IU.SNZO.BHZ.00 2019-04-18T14:51:34.87 10.0 positive automatic P 82 26.0559 -1.05502 0.769231
AU.QLP.BHZ. 2019-04-18T14:51:24.02 10.0 positive automatic P 11 24.7399 0.0293434 0.91954
NZ.KHZ.HHZ.10 2019-04-18T14:51:23.74 10.0 positive automatic P 83 24.7238 -0.0801829 0.793651
IU.NWAO.BHZ.00 2019-04-18T14:51:19.35 10.0 positive automatic P 310 24.2509 -0.214693 0.91954
AU.ARMA.BHZ. 2019-04-18T14:51:03.05 10.0 positive automatic P 29 22.5622 0.183213 0.91954
AU.FORT.BHZ. 2019-04-18T14:50:56.02 10.0 negative automatic P 333 21.9153 0.216027 0.909091
NZ.ODZ.HHZ.10 2019-04-18T14:50:52.26 10.0 positive automatic P 86 21.6015 -0.195492 0.735294
IU.CASY.BHZ.00 2019-04-18T14:50:44.42 10.0 negative automatic P 213 20.9982 -1.491 0.909091
AU.RIV.BHZ. 2019-04-18T14:50:27.85 10.0 positive automatic P 31 19.2455 1.00725 0.824742
AU.HTT.BHZ. 2019-04-18T14:50:08.65 10.0 negative automatic P 359 17.6108 0.691555 0.91954
G.CAN.BHZ.00 2019-04-18T14:50:02.95 10.0 positive automatic P 28 17.1971 0.149905 0.909091
AU.MILA.BHZ.00 2019-04-18T14:49:42.90 10.0 positive automatic P 30 15.6381 -0.0185347 0.909091
AU.TOO.BHZ.00 2019-04-18T14:49:23.28 10.0 positive automatic P 20 14.1612 0.218232 0.97561
II.TAU.BHZ.00 2019-04-18T14:48:23.37 10.0 positive automatic P 37 9.7804 0.297595 0.43956
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download