Earthquake with magnitude of Mwp 6.0 on date 21-08-2019 and time 14:28:32 (UTC) in region Western Indian Antarctic Ridge [Sea]

A magnitude Mwp 6.0 earthquake occured in region: Western Indian Antarctic Ridge [Sea], on

  • 21-08-2019 14:28:32 (UTC)
  • 21-08-2019 16:28:32 (UTC +02:00) Italian time
  • 22-08-2019 00:28:32 (UTC +10:00) local time in the region of the earthquake (Australia/Hobart)

and geographic coordinates (lat, lon) -50.1, 139.27 at 20 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 5.2
Mwp 6.0

Mwpd 6.2
2019-08-21
14:28:32
-50.1 139.27 20 2019-08-21
15:04:55
Sala Sismica INGV-Roma 71680581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-21 14:28:32
Latitude -50.10
Longitude 139.27
Depth (km) 20 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 71680581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 25388
Semi-minor axis of confidence ellipse (meter) 23728
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 29
Circular confidence region, given by single value of horizontal uncertainty (meter) 25981.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69.0565
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.86745
Epicentral distance of station closest to the epicenter (degree) 9.06603
Epicentral distance of station farthest from the epicenter (degree) 91.19928
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 33
Magnitudes information

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 9
Type of magnitude Mwpd
Reference to an origin 71680581
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-08-21 15:04:55

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 10
Type of magnitude Mwp
Reference to an origin 71680581
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-08-21 15:04:55

mb:5.2

Field Value
Value 5.2
Uncertainty 0.1
Num. used stations 32
Type of magnitude mb
Reference to an origin 71680581
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-08-21 15:04:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.WIN.BHZ. 2019-08-21T14:41:34.05 10.0 positive automatic P 231 91.1993 -0.544329 0.103069
GT.LBTB.BHZ.00 2019-08-21T14:41:02.73 10.0 positive automatic P 236 84.7738 -1.51085 0.0582565
JP.JMN.BHZ. 2019-08-21T14:40:57.75 10.0 positive automatic P 355 83.9613 -1.70337 0.118779
JP.JNU.BHZ. 2019-08-21T14:40:54.45 10.0 positive automatic P 353 83.5505 -2.5294 0.0614031
C1.LL02.BHZ. 2019-08-21T14:40:53.23 10.0 positive automatic P 158 82.8363 -0.403701 0.120625
GT.BOSA.BHZ.00 2019-08-21T14:40:48.13 10.0 positive automatic P 234 82.0497 -1.74087 0.0419474
II.SUR.BHZ.00 2019-08-21T14:40:44.87 10.0 positive automatic P 229 81.2124 -1.8142 0.126957
AF.POGA.BHZ. 2019-08-21T14:40:37.10 10.0 positive automatic P 239 79.5977 1.03324 0.129157
AF.GRHM.BHZ. 2019-08-21T14:40:25.22 10.0 positive automatic P 232 77.7379 -1.0054 0.132403
IU.CHTO.BHZ.00 2019-08-21T14:40:22.55 10.0 positive automatic P 321 77.5488 -3.06474 0.142553
MY.SBM.BHZ. 2019-08-21T14:38:16.17 10.0 positive automatic P 327 57.4536 -2.149 0.253695
MY.KSM.BHZ. 2019-08-21T14:38:15.92 10.0 positive automatic P 325 57.2203 -0.691069 0.255768
GE.FAKI.BHZ. 2019-08-21T14:37:04.57 10.0 positive automatic P 350 47.55 0.743637 0.361986
II.MSVF.BHZ.00 2019-08-21T14:36:48.02 10.0 positive automatic P 58 44.76 3.60742 0.40853
GE.PMG.BHZ.00 2019-08-21T14:36:13.27 10.0 positive automatic P 12 41.2102 -0.637643 0.246585
AU.MAW.BHZ. 2019-08-21T14:36:00.65 10.0 positive automatic P 215 39.9336 -3.02337 0.519174
AU.KDU.BHZ. 2019-08-21T14:35:44.37 10.0 positive automatic P 349 37.8214 -0.423004 0.61409
AU.MTN.BHZ. 2019-08-21T14:35:43.80 10.0 positive automatic P 347 37.8437 -1.3967 0.289058
G.DZM.BHZ.00 2019-08-21T14:35:23.20 10.0 positive automatic P 47 35.2029 -1.20626 0.6759
IU.MBWA.BHZ.00 2019-08-21T14:35:00.52 10.0 positive automatic P 325 32.784 -1.46257 0.761645
IU.CTAO.BHZ.00 2019-08-21T14:34:42.47 10.0 positive automatic P 13 30.5171 -0.591795 0.869167
NZ.URZ.HHZ.10 2019-08-21T14:34:29.96 10.0 positive automatic P 81 29.2146 0.133125 0.970874
AU.MORW.BHZ. 2019-08-21T14:34:14.75 10.0 positive automatic P 311 27.3812 0.214352 0.869565
AU.EIDS.BHZ. 2019-08-21T14:34:05.67 10.0 positive automatic P 25 26.3594 0.135427 0.888889
NZ.KHZ.HHZ.10 2019-08-21T14:33:49.43 10.0 positive automatic P 85 24.6598 0.826167 0.956938
IU.NWAO.BHZ.00 2019-08-21T14:33:43.05 10.0 positive automatic P 308 23.6319 2.73064 0.941176
AU.QLP.BHZ. 2019-08-21T14:33:41.15 10.0 positive automatic P 11 23.8207 -0.914126 0.126984
AU.ARMA.BHZ. 2019-08-21T14:33:19.75 10.0 positive automatic P 30 21.7563 -1.79235 1.30865
NZ.ODZ.HHZ.10 2019-08-21T14:33:19.26 10.0 positive automatic P 89 21.592 1.39955 0.97561
AU.HTT.BHZ. 2019-08-21T14:32:26.62 10.0 positive automatic P 359 16.6683 3.68486 0.963855
G.CAN.BHZ.00 2019-08-21T14:32:18.75 10.0 positive automatic P 29 16.3845 -0.819996 0.833333
AU.TOO.BHZ.00 2019-08-21T14:31:38.45 10.0 positive automatic P 22 13.2944 0.154181 0.669724
II.TAU.BHZ.00 2019-08-21T14:30:39.77 10.0 positive automatic P 41 9.066 -0.582838 0.97561
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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