Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.1 on date 01-11-2021 and time 01:02:50 (Italy) in region South Georgia & the South Sandwich Is. [Sea]

A magnitude Mwp 6.1 earthquake occured in region: South Georgia & the South Sandwich Is. [Sea], on

  • 01-11-2021 00:02:50 (UTC)
  • 01-11-2021 01:02:50 (UTC +01:00) Italian time
  • 31-10-2021 22:02:50 (UTC -02:00) local time in the region of the earthquake (Atlantic/South_Georgia)

and geographic coordinates (lat, lon) -57.8600, -25.2730 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 5.5
Mwp 6.1
Mwpd 6.2 		2021-11-01
00:02:50		 -57.8602 -25.2734 20 2021-11-01
00:22:10		 Sala Sismica INGV-Roma 97123941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-01 00:02:50
Latitude -57.8602
Longitude -25.2734
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 97123941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 11726
Semi-minor axis of confidence ellipse (meter) 10033
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 19
Circular confidence region, given by single value of horizontal uncertainty (meter) 12116.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69.4694
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 59
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.05609
Epicentral distance of station closest to the epicenter (degree) 7.19610
Epicentral distance of station farthest from the epicenter (degree) 100.21058
Number of stations at which the event was observed 57
Number of stations from which data was used for origin computation 57
Magnitudes information

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 11
Type of magnitude Mwpd
Reference to an origin 97123941
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-11-01 00:22:10

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 13
Type of magnitude Mwp
Reference to an origin 97123941
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-11-01 00:22:10

mb:5.5

Field Value
Value 5.5
Uncertainty 0.2
Num. used stations 48
Type of magnitude mb
Reference to an origin 97123941
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-11-01 00:22:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
II.RAYN.BHZ.00 2021-11-01T00:16:38.47 10.0 negative automatic Pdiff 62 100.2106 4.61399 0
AU.WRKA.BHZ.00 2021-11-01T00:16:06.43 10.0 positive automatic P 156 94.1971 -0.276742 0.0692297
IU.TEIG.BHZ.00 2021-11-01T00:16:02.30 10.0 positive automatic P 303 93.7885 -2.42666 0.0683451
AU.ARMA.BHZ. 2021-11-01T00:15:56.10 10.0 negative automatic P 177 91.6791 0.922049 0.0792014
AU.FORT.BHZ.00 2021-11-01T00:15:40.45 10.0 positive automatic P 157 88.5710 -0.0498473 0.105401
AU.HTT.BHZ. 2021-11-01T00:15:36.22 10.0 positive automatic P 167 87.7432 -0.45746 0.107628
CU.GTBY.BHZ.00 2021-11-01T00:15:36.10 10.0 positive automatic P 314 88.0489 -1.92586 0.104216
CU.TGUH.BHZ.00 2021-11-01T00:15:36.03 10.0 positive automatic P 301 87.8979 -1.46134 0.109048
AU.MORW.BHZ. 2021-11-01T00:15:33.52 10.0 positive automatic P 147 87.2199 -0.564375 0.1141
G.CAN.BHZ.00 2021-11-01T00:15:31.75 10.0 positive automatic P 175 86.6929 0.166493 0.118106
NZ.OUZ.HHZ.10 2021-11-01T00:15:25.66 10.0 negative automatic P 195 85.5734 -0.292457 0.12745
CU.SDDR.BHZ.00 2021-11-01T00:15:24.45 10.0 negative automatic P 317 85.7560 -2.49962 0.123921
GE.BOAB.BHZ. 2021-11-01T00:15:24.05 10.0 negative automatic P 302 85.7460 -2.81849 0.114565
AU.MILA.BHZ.00 2021-11-01T00:15:22.93 10.0 negative automatic P 176 84.9661 -0.117984 0.130165
G.TAM.BHZ.00 2021-11-01T00:15:21.00 10.0 positive automatic P 28 84.6454 -0.537197 0.1312
AU.TOO.BHZ.00 2021-11-01T00:15:19.43 10.0 positive automatic P 173 84.2500 0.027815 0.134376
II.JTS.BHZ.00 2021-11-01T00:15:13.55 10.0 positive automatic P 301 83.5090 -2.01792 0.142083
IU.SJG.BHZ.00 2021-11-01T00:15:10.27 10.0 positive automatic P 321 83.1545 -3.47864 0.145062
NZ.URZ.HHZ.10 2021-11-01T00:15:08.23 10.0 negative automatic P 198 82.0581 0.246792 0.156309
CU.ANWB.BHZ.00 2021-11-01T00:15:02.30 10.0 negative automatic P 325 81.3458 -1.92344 0.162654
IU.SNZO.BHZ.00 2021-11-01T00:14:54.37 10.0 negative automatic P 195 79.4292 0.443103 0.180354
II.TAU.BHZ.00 2021-11-01T00:14:51.87 10.0 positive automatic P 174 79.0368 0.0858844 0.179809
NZ.KHZ.HHZ.10 2021-11-01T00:14:48.88 10.0 positive automatic P 194 78.4962 0.0813068 0.192044
NZ.ODZ.HHZ.10 2021-11-01T00:14:37.63 10.0 negative automatic P 192 76.2438 1.40476 0.209795
CU.GRGR.BHZ.00 2021-11-01T00:14:33.55 10.0 positive automatic P 323 76.0645 -1.64624 0.199394
II.MBAR.BHZ.00 2021-11-01T00:14:14.80 10.0 positive automatic P 61 72.1620 2.18343 0.238718
IU.OTAV.BHZ.00 2021-11-01T00:14:08.12 10.0 positive automatic P 302 71.6162 -1.58218 0.250056
G.MPG.BHZ.00 2021-11-01T00:13:37.10 10.0 positive automatic P 330 66.7229 -1.67978 0.299425
GT.DBIC.BHZ.00 2021-11-01T00:13:36.45 10.0 positive automatic P 22 66.6163 -1.6447 0.32216
C.GO06.BHZ. 2021-11-01T00:09:31.23 10.0 positive automatic P 281 34.5777 -5.44939 0.865818
C1.LL01.BHZ. 2021-11-01T00:09:22.40 10.0 positive automatic P 277 33.0638 -0.90508 0.776153
IU.CASY.BHZ.00 2021-11-01T00:11:54.37 10.0 negative automatic P 159 51.5523 0.708092 0.528536
CX.MNMCX.BHZ. 2021-11-01T00:11:43.15 10.0 positive automatic P 301 50.4232 -2.41051 0.286732
GT.LBTB.BHZ.00 2021-11-01T00:11:30.60 10.0 positive automatic P 70 48.5231 -0.262394 0.599103
GE.WIN.BHZ. 2021-11-01T00:11:17.35 10.0 positive automatic P 59 46.5300 1.86793 0.584893
GT.BOSA.BHZ.00 2021-11-01T00:11:06.03 10.0 positive automatic P 72 45.3788 -0.294504 0.654963
C.GO03.BHZ. 2021-11-01T00:10:50.45 10.0 negative automatic P 294 43.4607 -0.436697 0.690264
C1.VA04.BHZ. 2021-11-01T00:10:47.70 10.0 positive automatic P 280 42.9272 1.23372 0.69191
AF.ALKP.BHZ. 2021-11-01T00:10:46.11 10.0 negative automatic P 70 42.7796 0.670963 0.663075
BL.PMNB.HHZ. 2021-11-01T00:10:41.97 10.0 positive automatic P 329 42.3017 0.43764 0.693655
IU.LCO.BHZ.00 2021-11-01T00:10:41.92 10.0 positive automatic P 293 42.5075 -1.51814 0.667914
C.GO04.BHZ. 2021-11-01T00:10:35.38 10.0 positive automatic P 292 41.5987 -0.614247 0.700111
C1.CO02.BHZ. 2021-11-01T00:10:29.33 10.0 positive automatic P 291 40.8564 -0.403055 0.748694
II.SUR.BHZ.00 2021-11-01T00:10:25.47 10.0 positive automatic P 71 40.0850 2.02333 0.745652
WA.ZON.HHZ. 2021-11-01T00:10:16.15 10.0 positive automatic P 293 39.4328 -1.70144 0.758269
G.PEL.BHZ.00 2021-11-01T00:10:15.25 10.0 negative automatic P 289 39.1291 -0.0491046 0.746409
C.GO05.BHZ. 2021-11-01T00:10:07.05 10.0 negative automatic P 286 38.2902 -1.10822 0.790032
C1.BO02.BHZ. 2021-11-01T00:10:04.60 10.0 positive automatic P 287 37.8752 -0.202258 0.761625
AU.MAW.BHZ. 2021-11-01T00:10:04.13 10.0 positive automatic P 142 37.8644 -0.429602 0.808284
G.SPB.BHZ.00 2021-11-01T00:10:04.95 10.0 positive automatic P 326 37.7728 1.06252 0.754908
GT.PLCA.BHZ.00 2021-11-01T00:09:24.85 10.0 negative automatic P 281 33.2577 -0.316197 0.862428
C1.LL02.BHZ. 2021-11-01T00:09:15.83 10.0 negative automatic P 276 32.2023 0.0097542 0.894574
G.COYC.BHZ.00 2021-11-01T00:09:03.70 10.0 positive automatic P 273 30.7287 0.881235 0.936768
II.EFI.BHZ.00 2021-11-01T00:07:18.75 10.0 negative automatic P 274 19.6748 1.89289 0.941176
IU.PMSA.BHZ.00 2021-11-01T00:07:17.07 10.0 positive automatic P 233 19.4790 2.36672 0.952381
GE.SNAA.BHZ. 2021-11-01T00:06:39.81 10.0 negative automatic P 155 16.5782 -0.66122 0.952381
II.HOPE.BHZ.00 2021-11-01T00:04:39.12 10.0 positive automatic P 295 7.1961 5.97418 0.851064
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