Earthquake with magnitude of Mwp 6.0 on date 06-08-2021 and time 19:22:14 (UTC) 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

  • 06-08-2021 19:22:14 (UTC)
  • 06-08-2021 21:22:14 (UTC +02:00) Italian time
  • 06-08-2021 17:22:14 (UTC -02:00) local time in the region of the earthquake (Atlantic/South_Georgia)

and geographic coordinates (lat, lon) -59.407, -26.185 at 124 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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
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
2021-08-06
19:22:14
-59.407 -26.1849 124 2021-08-06
19:42:46
Sala Sismica INGV-Roma 93766641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-06 19:22:14
Latitude -59.4070
Longitude -26.1849
Depth (km) 124 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 93766641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 12233
Semi-minor axis of confidence ellipse (meter) 5853
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 186
Circular confidence region, given by single value of horizontal uncertainty (meter) 10533.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69.8262
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.04265
Epicentral distance of station closest to the epicenter (degree) 7.60032
Epicentral distance of station farthest from the epicenter (degree) 106.97629
Number of stations at which the event was observed 53
Number of stations from which data was used for origin computation 53
Magnitudes information

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 9
Type of magnitude Mwpd
Reference to an origin 93766641
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-08-06 19:42:46

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 10
Type of magnitude Mwp
Reference to an origin 93766641
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-08-06 19:42:46

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 48
Type of magnitude mb
Reference to an origin 93766641
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-08-06 19:42:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.SNAA.BHZ. 2021-08-06T19:37:39.26 10.0 negative automatic ScS 152 15.4035 -0.615384 0
US.TZTN.BHZ.00 2021-08-06T19:36:18.70 10.0 positive automatic Pdiff 315 106.9763 3.03854 0
PM.ROSA.BHZ. 2021-08-06T19:35:27.68 10.0 positive automatic PcP 358 98.1384 -8.67982 0
IU.TEIG.BHZ.00 2021-08-06T19:35:17.85 10.0 negative automatic P 304 94.2442 -0.782969 0.0665168
AU.QLP.BHZ. 2021-08-06T19:35:17.65 10.0 positive automatic P 171 93.6407 1.76132 0
AU.WRKA.BHZ.00 2021-08-06T19:35:13.70 10.0 negative automatic P 157 92.9666 0.846737 0.0749063
G.ATD.BHZ.00 2021-08-06T19:35:00.20 10.0 negative automatic P 66 89.6306 2.8076 0.0845761
AU.FORT.BHZ.00 2021-08-06T19:34:47.30 10.0 positive automatic P 158 87.3203 0.863148 0.113345
AU.HTT.BHZ. 2021-08-06T19:34:42.30 10.0 positive automatic P 168 86.3397 0.519433 0.118018
G.TAM.BHZ.00 2021-08-06T19:34:42.25 10.0 negative automatic P 29 86.23 0.891336 0.113568
GE.BOAB.BHZ. 2021-08-06T19:34:39.75 10.0 negative automatic P 303 86.1657 -1.12122 0.104727
G.CAN.BHZ.00 2021-08-06T19:34:37.20 10.0 negative automatic P 176 85.1861 1.11994 0.129939
NZ.OUZ.HHZ.10 2021-08-06T19:34:31.12 10.0 positive automatic P 196 83.956 1.33379 0.138698
AU.MILA.BHZ.00 2021-08-06T19:34:30.15 10.0 positive automatic PcP 176 83.4571 -1.28357 0
AU.TOO.BHZ.00 2021-08-06T19:34:24.70 10.0 positive automatic P 173 82.7726 0.878247 0.15188
NZ.URZ.HHZ.10 2021-08-06T19:34:14.75 10.0 positive automatic P 198 80.4405 3.26871 0.166927
II.TAU.BHZ.00 2021-08-06T19:33:56.67 10.0 positive automatic P 175 77.5393 0.997854 0.198702
NZ.KHZ.HHZ.10 2021-08-06T19:33:55.38 10.0 negative automatic P 195 76.88 3.40225 0.198689
II.MBAR.BHZ.00 2021-08-06T19:33:33.95 10.0 negative automatic P 61 73.3311 2.08156 0.221641
IU.OTAV.BHZ.00 2021-08-06T19:33:25.02 10.0 positive automatic P 304 72.0644 0.280321 0.250898
II.ABPO.BHZ.00 2021-08-06T19:32:43.57 10.0 negative automatic P 86 65.2979 1.13392 0.316465
GE.VOI.BHZ. 2021-08-06T19:32:26.05 10.0 positive automatic P 87 62.6497 1.00171 0.365634
II.NNA.BHZ.00 2021-08-06T19:32:10.72 10.0 positive automatic P 300 60.3674 1.09688 0.370821
GT.LPAZ.BHZ.00 2021-08-06T19:31:16.50 10.0 negative automatic P 306 52.7856 -0.222388 0.527351
IU.TSUM.BHZ.00 2021-08-06T19:31:01.92 10.0 negative automatic P 57 50.9332 -0.456666 0.538507
IU.CASY.BHZ.00 2021-08-06T19:30:56.97 10.0 positive automatic P 159 50.2782 -0.278193 0.549156
GT.LBTB.BHZ.00 2021-08-06T19:30:50.63 10.0 positive automatic P 69 49.5073 -0.990014 0.561822
GE.WIN.BHZ. 2021-08-06T19:30:38.10 10.0 positive automatic P 59 47.7352 -0.0675066 0.605572
GT.BOSA.BHZ.00 2021-08-06T19:30:25.98 10.0 negative automatic P 72 46.3097 -1.04632 0.63057
II.SHEL.BHZ.00 2021-08-06T19:30:24.92 10.0 negative automatic P 28 45.9551 0.802202 0.636866
C.GO03.BHZ. 2021-08-06T19:30:06.33 10.0 positive automatic P 297 43.7031 0.0111956 0.694114
AF.ALKP.BHZ. 2021-08-06T19:30:05.84 10.0 negative automatic P 70 43.7566 -0.964565 0.579948
BL.PMNB.HHZ. 2021-08-06T19:30:03.77 10.0 positive automatic P 331 43.4134 -0.264093 0.689484
AF.GRHM.BHZ. 2021-08-06T19:30:00.22 10.0 positive automatic P 77 43.0308 -0.68102 0.658626
C1.VA04.BHZ. 2021-08-06T19:30:00.68 10.0 positive automatic P 283 42.7776 1.89867 0.703057
GT.VNDA.BHZ.00 2021-08-06T19:29:59.98 10.0 positive automatic P 183 42.9831 -0.456869 0.109912
IU.LCO.BHZ.00 2021-08-06T19:29:59.37 10.0 negative automatic P 295 42.7046 0.812753 0.679859
IU.SBA.BHZ.00 2021-08-06T19:29:56.47 10.0 positive automatic P 184 42.5116 -0.146922 0.638803
C.GO04.BHZ. 2021-08-06T19:29:51.45 10.0 positive automatic P 294 41.7662 0.522462 0.174256
II.SUR.BHZ.00 2021-08-06T19:29:45.12 10.0 positive automatic P 70 41.0488 0.106948 0.727203
C1.CO02.BHZ. 2021-08-06T19:29:45.18 10.0 positive automatic P 293 40.9932 0.718689 0.184259
WA.ZON.HHZ. 2021-08-06T19:29:33.60 10.0 positive automatic P 295 39.6324 0.415181 0.772796
GT.CPUP.BHZ.00 2021-08-06T19:29:30.88 10.0 positive automatic P 313 39.4471 -0.659287 0.740364
G.PEL.BHZ.00 2021-08-06T19:29:30.35 10.0 positive automatic P 292 39.227 0.544157 0.711453
C.GO05.BHZ. 2021-08-06T19:29:21.63 10.0 positive automatic P 289 38.3004 -0.349868 0.789827
C1.BO02.BHZ. 2021-08-06T19:29:18.72 10.0 negative automatic P 290 37.9258 -0.254337 0.797315
C.GO06.BHZ. 2021-08-06T19:28:49.05 10.0 positive automatic P 285 34.4639 -0.541356 0.809667
GT.PLCA.BHZ.00 2021-08-06T19:28:37.13 10.0 negative automatic P 284 33.1319 -0.906132 0.875183
C1.LL02.BHZ. 2021-08-06T19:28:27.15 10.0 negative automatic P 280 31.9521 -0.470823 0.89983
C1.MG02.BHZ. 2021-08-06T19:27:18.50 10.0 positive automatic P 267 24.4276 -2.08639 0.97561
II.EFI.BHZ.00 2021-08-06T19:26:29.82 10.0 positive automatic P 279 19.3847 0.107645 0.97561
IU.PMSA.BHZ.00 2021-08-06T19:26:16.17 10.0 positive automatic P 237 18.203 -0.662129 0.930233
II.HOPE.BHZ.00 2021-08-06T19:24:02.52 10.0 positive automatic P 308 7.6003 0.879212 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