Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.0 on date 06-11-2020 and time 23:49:28 (UTC) in region Antarctica [Land]

A magnitude Mwp 6.0 earthquake occured in region: Antarctica [Land], on

  • 06-11-2020 23:49:28 (UTC)
  • 07-11-2020 00:49:28 (UTC +01:00) Italian time
  • 06-11-2020 20:49:28 (UTC -03:00) local time in the region of the earthquake (Antarctica/Palmer)

and geographic coordinates (lat, lon) -62.04, -58.11 at 77 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
Reviewed
Rev100 		mb 5.3
Mwp 6.0
Mwpd 6.1 		2020-11-06
23:49:28		 -62.04 -58.11 77 2020-11-07
00:05:39		 Sala Sismica INGV-Roma 84516271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-06 23:49:28
Latitude -62.04
Longitude -58.11
Depth (km) 77 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 84516271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 13872
Semi-minor axis of confidence ellipse (meter) 7742
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 12402
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98.8477
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 50
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.12906
Epicentral distance of station closest to the epicenter (degree) 10.36094
Epicentral distance of station farthest from the epicenter (degree) 95.60819
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 47
Magnitudes information

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 12
Type of magnitude Mwp
Reference to an origin 84516271
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-11-07 00:05:39

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 12
Type of magnitude Mwpd
Reference to an origin 84516271
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-11-07 00:05:39

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 37
Type of magnitude mb
Reference to an origin 84516271
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-11-07 00:05:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.CTAO.BHZ.00 2020-11-07T00:02:44.02 10.0 positive automatic P 203 95.6082 -0.485532 0.0575957
G.SANVU.BHZ.00 2020-11-07T00:02:39.55 10.0 positive automatic P 223 94.7335 -0.908117 0.0645135
IU.NWAO.BHZ.00 2020-11-07T00:01:53.77 10.0 negative automatic P 176 84.9573 -0.634174 0.12873
AU.ARMA.BHZ. 2020-11-07T00:01:51.15 10.0 positive automatic P 205 84.4824 -0.993684 0.102668
AU.HTT.BHZ. 2020-11-07T00:01:46.85 10.0 negative automatic P 194 83.5405 -0.437841 0.143518
G.RER.BHZ.00 2020-11-07T00:01:39.90 10.0 negative automatic P 120 81.8212 1.51179 0.158416
AU.RIV.BHZ. 2020-11-07T00:01:35.87 10.0 positive automatic P 204 81.2579 0.587903 0.159655
II.ABPO.BHZ.00 2020-11-07T00:01:30.92 10.0 negative automatic P 112 80.1759 1.15587 0.161803
IU.LCO.BHZ.00 2020-11-07T00:01:31.92 10.0 positive automatic S 340 34.0472 8.01525 0
G.CAN.BHZ.00 2020-11-07T00:01:30.30 10.0 positive automatic P 202 80.2062 0.515518 0.165212
GT.DBIC.BHZ.00 2020-11-07T00:01:25.93 10.0 negative automatic P 54 79.8564 -1.87451 0.172239
GE.VOI.BHZ. 2020-11-07T00:01:16.05 10.0 negative automatic P 113 77.4251 1.42133 0.195203
GE.BOAB.BHZ. 2020-11-07T00:01:12.85 10.0 positive automatic P 332 77.5503 -2.34649 0.198605
NZ.OUZ.HHZ.10 2020-11-07T00:00:55.64 10.0 negative automatic P 222 74.2127 -0.502638 0.235412
II.NNA.BHZ.00 2020-11-07T00:00:16.57 10.0 positive automatic PP 336 51.84 -9.85761 0
G.MPG.BHZ.00 2020-11-07T00:00:11.50 10.0 positive automatic P 6 67.2757 -2.56378 0.30658
IU.TSUM.BHZ.00 2020-11-07T00:00:08.72 10.0 positive automatic P 87 66.4228 -0.115114 0.31708
AF.POGA.BHZ. 2020-11-07T00:00:05.70 10.0 negative automatic P 103 65.9759 -0.11807 0.322652
GT.LBTB.BHZ.00 2020-11-07T00:00:00.15 10.0 negative automatic P 97 65.1574 -0.535948 0.332983
IU.OTAV.BHZ.00 2020-11-06T23:59:54.02 10.0 negative automatic P 337 64.1486 -0.510328 0.338078
GE.WIN.BHZ. 2020-11-06T23:59:48.30 10.0 negative automatic P 88 63.2794 -0.210457 0.341424
GT.BOSA.BHZ.00 2020-11-06T23:59:39.15 10.0 negative automatic P 99 61.9263 -0.273048 0.388925
AF.ALKP.BHZ. 2020-11-06T23:59:22.01 10.0 positive automatic P 97 59.4052 -0.250955 0.383432
AF.GRHM.BHZ. 2020-11-06T23:59:16.57 10.0 positive automatic P 103 58.5107 0.57615 0.422909
II.SUR.BHZ.00 2020-11-06T23:59:04.37 10.0 positive automatic P 97 56.6917 0.942122 0.46009
IU.CASY.BHZ.00 2020-11-06T23:58:24.62 10.0 negative automatic P 174 51.4116 -0.0840648 0.556707
GT.LPAZ.BHZ.00 2020-11-06T23:57:46.08 10.0 positive automatic P 347 46.2937 -0.29577 0.588816
BL.PMNB.HHZ. 2020-11-06T23:57:29.49 10.0 negative automatic P 16 44.2542 -0.08486 0.680488
AU.MAW.BHZ. 2020-11-06T23:57:23.78 10.0 negative automatic P 152 43.5569 -0.0487827 0.656838
GT.VNDA.BHZ.00 2020-11-06T23:56:41.18 10.0 positive automatic P 193 38.3067 0.456539 0.762176
IU.SBA.BHZ.00 2020-11-06T23:56:34.45 10.0 negative automatic P 194 37.4838 0.66368 0.778096
GT.CPUP.BHZ.00 2020-11-06T23:56:18.08 10.0 negative automatic P 1 35.7083 -0.624048 0.794531
C.GO03.BHZ. 2020-11-06T23:56:15.68 10.0 positive automatic P 341 35.3699 -0.227372 0.766287
IU.LCO.BHZ.00 2020-11-06T23:56:04.72 10.0 negative automatic P 340 34.0472 -0.0501502 0.866516
C.GO04.BHZ. 2020-11-06T23:55:55.03 10.0 negative automatic P 340 32.9217 0.0607726 0.869344
C1.CO02.BHZ. 2020-11-06T23:55:46.70 10.0 negative automatic P 339 31.9438 0.450328 0.859578
WA.ZON.HHZ. 2020-11-06T23:55:38.74 10.0 negative automatic P 342 31.2478 -1.32466 0.957537
G.PEL.BHZ.00 2020-11-06T23:55:29.55 10.0 positive automatic P 339 29.9882 0.604955 0.930233
C.GO05.BHZ. 2020-11-06T23:55:14.93 10.0 negative automatic P 336 28.3958 0.19026 0.898876
C1.BO02.BHZ. 2020-11-06T23:55:14.82 10.0 positive automatic P 338 28.3948 -0.0422624 0.898876
C.GO06.BHZ. 2020-11-06T23:54:34.35 10.0 positive automatic P 334 23.877 0.146449 0.97561
GE.SNAA.BHZ. 2020-11-06T23:54:21.51 10.0 negative automatic P 138 22.7128 -1.60486 0.888889
GT.PLCA.BHZ.00 2020-11-06T23:54:20.55 10.0 positive automatic P 335 22.5825 -1.224 0.952381
C1.LL02.BHZ. 2020-11-06T23:54:01.08 10.0 positive automatic P 330 20.5099 1.51734 0.909091
G.COYC.BHZ.00 2020-11-06T23:53:38.65 10.0 positive automatic pP 327 18.3245 2.90069 0.952381
II.HOPE.BHZ.00 2020-11-06T23:52:39.97 10.0 positive automatic P 65 13.6871 1.6932 0.952381
C1.MG02.BHZ. 2020-11-06T23:52:00.90 10.0 negative automatic P 322 10.99 -1.04684 0.97561
II.EFI.BHZ.00 2020-11-06T23:51:52.52 10.0 negative automatic P 0 10.3609 -0.856187 0.963855
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