Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.0 on date 03-12-2021 and time 09:33:42 (Italy) in region South Georgia & the South Sandwich Is. [Sea]

A magnitude Mwp 6.0 earthquake occured in region: South Georgia & the South Sandwich Is. [Sea], on

  • 03-12-2021 08:33:42 (UTC)
  • 03-12-2021 09:33:42 (UTC +01:00) Italian time
  • 03-12-2021 06:33:42 (UTC -02:00) local time in the region of the earthquake (Atlantic/South_Georgia)

and geographic coordinates (lat, lon) -60.4760, -26.8100 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.

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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
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 		2021-12-03
08:33:42		 -60.4758 -26.8099 20 2021-12-03
08:54:18		 Sala Sismica INGV-Roma 98085591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-03 08:33:42
Latitude -60.4758
Longitude -26.8099
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 98085591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 18503
Semi-minor axis of confidence ellipse (meter) 11920
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 209
Circular confidence region, given by single value of horizontal uncertainty (meter) 14934.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67.6623
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.15642
Epicentral distance of station closest to the epicenter (degree) 8.08017
Epicentral distance of station farthest from the epicenter (degree) 99.23503
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 41
Magnitudes information

Mwp:6.0

Field Value
Value 6.0
Uncertainty 0.0
Num. used stations 7
Type of magnitude Mwp
Reference to an origin 98085591
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-12-03 08:54:18

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 6
Type of magnitude Mwpd
Reference to an origin 98085591
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-12-03 08:54:18

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 33
Type of magnitude mb
Reference to an origin 98085591
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-12-03 08:54:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.CTAO.BHZ.00 2021-12-03T08:47:27.35 10.0 negative automatic pP 173 99.2350 -0.813226 0
IU.CTAO.BHZ.00 2021-12-03T08:47:27.22 10.0 positive automatic P 173 99.2350 5.60312 0.0420243
IU.TEIG.BHZ.00 2021-12-03T08:46:58.37 10.0 positive automatic P 304 94.5819 -2.13713 0.0653686
AU.WRKA.BHZ.00 2021-12-03T08:46:50.13 10.0 positive automatic P 158 92.1017 0.939289 0.0793351
AU.ARMA.BHZ. 2021-12-03T08:46:35.82 10.0 positive automatic P 179 89.0930 0.550391 0.100422
AU.FORT.BHZ.00 2021-12-03T08:46:23.00 10.0 negative automatic P 159 86.4429 0.589803 0.0769653
AU.HTT.BHZ. 2021-12-03T08:46:17.55 10.0 negative automatic P 168 85.3609 0.396624 0.128537
G.CAN.BHZ.00 2021-12-03T08:46:11.90 10.0 positive automatic P 177 84.1398 0.905077 0.123756
NZ.OUZ.HHZ.10 2021-12-03T08:46:05.35 10.0 negative automatic P 197 82.8423 1.14009 0.151635
AU.MILA.BHZ.00 2021-12-03T08:46:03.40 10.0 positive automatic P 177 82.4096 1.31339 0.1589
II.MBAR.BHZ.00 2021-12-03T08:45:18.02 10.0 negative automatic P 61 74.1208 1.68675 0.236969
IU.OTAV.BHZ.00 2021-12-03T08:45:03.32 10.0 positive automatic P 305 72.4064 -3.26495 0.241518
GT.DBIC.BHZ.00 2021-12-03T08:44:44.55 10.0 positive automatic P 23 69.3325 -2.76533 0.288687
GE.VOI.BHZ. 2021-12-03T08:44:07.95 10.0 negative automatic P 87 63.0152 0.996096 0.272166
II.NNA.BHZ.00 2021-12-03T08:43:51.37 10.0 negative automatic P 301 60.6322 0.555265 0.367391
GT.LPAZ.BHZ.00 2021-12-03T08:42:55.38 10.0 negative automatic P 308 53.1787 -3.32833 0.520965
CX.MNMCX.BHZ. 2021-12-03T08:42:39.15 10.0 positive automatic P 305 51.1789 -4.25018 0.534539
GT.LBTB.BHZ.00 2021-12-03T08:42:35.98 10.0 positive automatic P 69 50.1778 0.325778 0.557278
IU.CASY.BHZ.00 2021-12-03T08:42:30.77 10.0 negative automatic P 159 49.3929 1.29015 0.242397
GE.WIN.BHZ. 2021-12-03T08:42:24.20 10.0 positive automatic P 59 48.5575 0.825937 0.539957
GT.BOSA.BHZ.00 2021-12-03T08:42:11.33 10.0 positive automatic P 71 46.9453 0.530998 0.612073
AF.ALKP.BHZ. 2021-12-03T08:41:51.75 10.0 positive automatic P 69 44.4252 0.909906 0.620099
C.GO03.BHZ. 2021-12-03T08:41:47.13 10.0 positive automatic P 299 43.9234 0.369937 0.681663
IU.LCO.BHZ.00 2021-12-03T08:41:36.87 10.0 negative automatic P 297 42.8951 -1.85208 0.676401
II.SUR.BHZ.00 2021-12-03T08:41:30.82 10.0 positive automatic P 70 41.7103 1.83118 0.682189
C.GO04.BHZ. 2021-12-03T08:41:29.23 10.0 negative automatic P 296 41.9374 -1.68016 0.648625
IU.SBA.BHZ.00 2021-12-03T08:41:28.40 10.0 positive automatic P 184 41.4232 2.05727 0.617228
C1.CO02.BHZ. 2021-12-03T08:41:22.78 10.0 negative automatic P 295 41.1443 -1.47073 0.662311
WA.ZON.HHZ. 2021-12-03T08:41:11.33 10.0 negative automatic P 297 39.8277 -1.9533 0.700575
G.PEL.BHZ.00 2021-12-03T08:41:08.15 10.0 positive automatic P 294 39.3536 -1.17251 0.678979
C.GO05.BHZ. 2021-12-03T08:40:59.10 10.0 positive automatic P 291 38.3679 -1.85475 0.798097
C1.BO02.BHZ. 2021-12-03T08:40:56.65 10.0 positive automatic P 292 38.0215 -1.52901 0.776684
AU.MAW.BHZ. 2021-12-03T08:40:44.55 10.0 negative automatic P 140 36.3340 0.852167 0.620281
GT.PLCA.BHZ.00 2021-12-03T08:40:15.13 10.0 negative automatic P 286 33.1127 -0.922182 0.836229
C1.LL02.BHZ. 2021-12-03T08:40:05.55 10.0 positive automatic P 282 31.8484 0.705227 0.891524
G.COYC.BHZ.00 2021-12-03T08:39:52.40 10.0 negative automatic P 279 30.2106 2.01218 0.925943
IU.QSPA.BHZ.00 2021-12-03T08:39:45.57 10.0 negative automatic P 180 29.5932 0.194733 0.930233
C.GO10.BHZ. 2021-12-03T08:39:04.70 10.0 negative automatic P 267 24.7618 3.10216 0.888889
II.EFI.BHZ.00 2021-12-03T08:38:06.00 10.0 negative automatic P 283 19.2856 2.25405 0.97561
IU.PMSA.BHZ.00 2021-12-03T08:37:43.57 10.0 positive automatic P 240 17.3748 1.09975 0.43956
GE.SNAA.BHZ. 2021-12-03T08:37:03.61 10.0 positive automatic P 150 14.6230 -3.4601 0.909091
II.HOPE.BHZ.00 2021-12-03T08:35:40.42 10.0 negative automatic P 316 8.0802 2.99838 0.909091
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download