A magnitude Mwpd 8.1 earthquake occured in region: South Georgia & the South Sandwich Is. [Sea], on
and geographic coordinates (lat, lon) -57.1570, -24.5960 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.
No Italian municipalities within 20 km distance.
No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
mb 5.5
Mwp 7.3 Mwpd 8.1 |
2021-08-12 18:32:53 |
-57.157 | -24.5964 | 20 | 2021-08-12 18:52:45 |
Sala Sismica INGV-Roma | 94021471 |
Field | Value |
---|---|
Time (UTC) | 2021-08-12 18:32:53 |
Latitude | -57.1570 |
Longitude | -24.5964 |
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 | 94021471 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 24190 |
Semi-minor axis of confidence ellipse (meter) | 15416 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 14 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 19525.2 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 69.8344 |
Number of associated phases, regardless of their use for origin computation | 60 |
Number of defining phases | 60 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 2.90858 |
Epicentral distance of station closest to the epicenter (degree) | 7.27539 |
Epicentral distance of station farthest from the epicenter (degree) | 98.19047 |
Number of stations at which the event was observed | 59 |
Number of stations from which data was used for origin computation | 59 |
Field | Value |
---|---|
Value | 8.1 |
Uncertainty | 0.3 |
Num. used stations | 42 |
Type of magnitude | Mwpd |
Reference to an origin | 94021471 |
Agency | INGV |
Autore | early-est_ee1.1.9 |
Time of creation (UTC) | 2021-08-12 18:52:45 |
Field | Value |
---|---|
Value | 7.3 |
Uncertainty | 0.1 |
Num. used stations | 40 |
Type of magnitude | Mwp |
Reference to an origin | 94021471 |
Agency | INGV |
Autore | early-est_ee1.1.9 |
Time of creation (UTC) | 2021-08-12 18:52:45 |
Field | Value |
---|---|
Value | 5.5 |
Uncertainty | 0.1 |
Num. used stations | 47 |
Type of magnitude | mb |
Reference to an origin | 94021471 |
Agency | INGV |
Autore | early-est_ee1.1.9 |
Time of creation (UTC) | 2021-08-12 18:52:45 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
AF.ALKP.BHZ. | 2021-08-12T18:40:42.16 | 10.0 | negative | automatic | P | 70 | 42.1994 | -1.20394 | 0.689074 | |
IU.PAB.BHZ.00 | 2021-08-12T18:46:29.07 | 10.0 | negative | automatic | PcP | 16 | 98.1905 | 1.49555 | 0 | |
PM.PESTR.BHZ. | 2021-08-12T18:46:26.95 | 10.0 | negative | automatic | P | 13 | 97.0848 | 4.47186 | 0.0239414 | |
AU.QLP.BHZ. | 2021-08-12T18:46:21.87 | 10.0 | positive | automatic | P | 170 | 95.7259 | 5.60195 | 0.0538763 | |
AU.WRKA.BHZ.00 | 2021-08-12T18:46:17.23 | 10.0 | negative | automatic | P | 156 | 94.6898 | 5.62215 | 0.0639932 | |
IU.TEIG.BHZ.00 | 2021-08-12T18:46:09.95 | 10.0 | positive | automatic | P | 303 | 93.7131 | 2.92615 | 0.0325008 | |
AU.ARMA.BHZ. | 2021-08-12T18:46:07.07 | 10.0 | negative | automatic | P | 177 | 92.3624 | 6.08946 | 0.0759287 | |
AU.RIV.BHZ. | 2021-08-12T18:45:52.40 | 10.0 | positive | automatic | sP | 176 | 88.9388 | -0.0668313 | 0 | |
AU.MORW.BHZ. | 2021-08-12T18:45:43.55 | 10.0 | positive | automatic | P | 146 | 87.6063 | 4.95173 | 0.109899 | |
AU.HTT.BHZ. | 2021-08-12T18:45:42.10 | 10.0 | positive | automatic | P | 166 | 88.3427 | -0.069109 | 0.103336 | |
G.CAN.BHZ.00 | 2021-08-12T18:45:39.00 | 10.0 | positive | automatic | P | 175 | 87.3619 | 1.51395 | 0.110404 | |
NZ.OUZ.HHZ.10 | 2021-08-12T18:45:36.16 | 10.0 | positive | automatic | P | 195 | 86.3470 | 3.74012 | 0.0416457 | |
CU.MTDJ.BHZ.00 | 2021-08-12T18:45:35.20 | 10.0 | positive | automatic | P | 311 | 87.2632 | -1.84414 | 0 | |
AU.TOO.BHZ.00 | 2021-08-12T18:45:30.65 | 10.0 | positive | automatic | P | 172 | 84.8988 | 5.33076 | 0.129184 | |
AU.MILA.BHZ.00 | 2021-08-12T18:45:28.80 | 10.0 | positive | automatic | P | 175 | 85.6367 | -0.236825 | 0.121984 | |
GE.BOAB.BHZ. | 2021-08-12T18:45:25.70 | 10.0 | positive | automatic | P | 301 | 85.6911 | -3.53913 | 0.12591 | |
G.TAM.BHZ.00 | 2021-08-12T18:45:20.80 | 10.0 | negative | automatic | P | 28 | 83.8538 | 0.640458 | 0.128623 | |
NZ.URZ.HHZ.10 | 2021-08-12T18:45:19.35 | 10.0 | positive | automatic | PcP | 197 | 82.8375 | -0.140355 | 0 | |
IU.SNZO.BHZ.00 | 2021-08-12T18:45:04.82 | 10.0 | positive | automatic | pP | 195 | 80.2021 | -2.39368 | 0 | |
II.TAU.BHZ.00 | 2021-08-12T18:45:03.62 | 10.0 | positive | automatic | P | 174 | 79.6998 | 5.57549 | 0.169718 | |
NZ.KHZ.HHZ.10 | 2021-08-12T18:45:00.73 | 10.0 | positive | automatic | pP | 194 | 79.2657 | -2.84467 | 0 | |
NZ.ODZ.HHZ.10 | 2021-08-12T18:44:48.61 | 10.0 | positive | automatic | pP | 191 | 77.0043 | 5.44309 | 0.0703647 | |
GE.KMBO.BHZ.00 | 2021-08-12T18:44:28.67 | 10.0 | negative | automatic | P | 66 | 74.1926 | 1.32402 | 0.150796 | |
II.MBAR.BHZ.00 | 2021-08-12T18:44:12.07 | 10.0 | positive | automatic | P | 60 | 71.4982 | 0.798561 | 0.237831 | |
IU.OTAV.BHZ.00 | 2021-08-12T18:44:08.92 | 10.0 | positive | automatic | P | 302 | 71.5511 | -3.03545 | 0.183895 | |
GE.SBV.BHZ. | 2021-08-12T18:44:08.95 | 10.0 | negative | automatic | pP | 84 | 70.3431 | -1.4478 | 0 | |
G.MPG.BHZ.00 | 2021-08-12T18:43:36.25 | 10.0 | positive | automatic | P | 329 | 66.2997 | -2.46632 | 0 | |
GT.DBIC.BHZ.00 | 2021-08-12T18:43:36.00 | 10.0 | positive | automatic | P | 22 | 65.8283 | 0.314553 | 0.340317 | |
GE.VOI.BHZ. | 2021-08-12T18:43:13.00 | 10.0 | negative | automatic | pP | 87 | 61.7006 | -1.95782 | 0 | |
II.NNA.BHZ.00 | 2021-08-12T18:43:00.62 | 10.0 | positive | automatic | pP | 297 | 60.0425 | -2.94294 | 0 | |
IU.CASY.BHZ.00 | 2021-08-12T18:42:00.17 | 10.0 | positive | automatic | P | 159 | 52.0781 | -0.0589603 | 0.260072 | |
GT.LPAZ.BHZ.00 | 2021-08-12T18:41:59.53 | 10.0 | negative | automatic | P | 303 | 52.1889 | -2.35436 | 0.530727 | |
IU.TSUM.BHZ.00 | 2021-08-12T18:41:36.42 | 10.0 | positive | automatic | P | 57 | 49.0126 | -0.866061 | 0.570027 | |
GT.LBTB.BHZ.00 | 2021-08-12T18:41:27.30 | 10.0 | negative | automatic | P | 70 | 47.9381 | -1.69198 | 0.602055 | |
GE.WIN.BHZ. | 2021-08-12T18:41:12.50 | 10.0 | negative | automatic | P | 59 | 45.8558 | -0.316801 | 0 | |
GT.BOSA.BHZ.00 | 2021-08-12T18:41:07.38 | 10.0 | negative | automatic | P | 72 | 44.8174 | 2.87465 | 0.303361 | |
GT.VNDA.BHZ.00 | 2021-08-12T18:41:05.38 | 10.0 | negative | automatic | P | 182 | 45.2639 | -2.47764 | 0.634133 | |
IU.SBA.BHZ.00 | 2021-08-12T18:41:02.50 | 10.0 | positive | automatic | P | 183 | 44.8105 | -1.73831 | 0.600241 | |
C.GO03.BHZ. | 2021-08-12T18:40:56.78 | 10.0 | positive | automatic | P | 293 | 43.5106 | 2.84311 | 0.314367 | |
IU.LCO.BHZ.00 | 2021-08-12T18:40:49.67 | 10.0 | positive | automatic | P | 291 | 42.5803 | 2.99739 | 0.651804 | |
BL.PMNB.HHZ. | 2021-08-12T18:40:40.45 | 10.0 | positive | automatic | P | 328 | 41.8891 | -0.362931 | 0.735835 | |
C.GO04.BHZ. | 2021-08-12T18:40:36.65 | 10.0 | positive | automatic | P | 290 | 41.6867 | -2.70496 | 0.652936 | |
C1.CO02.BHZ. | 2021-08-12T18:40:30.35 | 10.0 | positive | automatic | P | 289 | 40.9598 | -2.8748 | 0.728897 | |
II.SUR.BHZ.00 | 2021-08-12T18:40:25.37 | 10.0 | negative | automatic | P | 71 | 39.5114 | 4.0496 | 0.349267 | |
G.PEL.BHZ.00 | 2021-08-12T18:40:22.35 | 10.0 | positive | automatic | P | 288 | 39.2525 | 3.3694 | 0.727149 | |
WA.ZON.HHZ. | 2021-08-12T18:40:16.96 | 10.0 | negative | automatic | P | 291 | 39.5065 | -4.14866 | 0.771535 | |
C.GO05.BHZ. | 2021-08-12T18:40:13.48 | 10.0 | positive | automatic | P | 284 | 38.4564 | 1.27573 | 0.358779 | |
GT.CPUP.BHZ.00 | 2021-08-12T18:40:11.43 | 10.0 | positive | automatic | P | 309 | 38.5976 | -1.96582 | 0.793473 | |
AU.MAW.BHZ. | 2021-08-12T18:40:09.15 | 10.0 | positive | automatic | P | 142 | 38.1925 | -0.817274 | 0.782554 | |
C1.BO02.BHZ. | 2021-08-12T18:40:07.57 | 10.0 | negative | automatic | P | 286 | 38.0225 | -1.11287 | 0.785912 | |
G.SPB.BHZ.00 | 2021-08-12T18:40:04.00 | 10.0 | positive | automatic | P | 324 | 37.4066 | 0.565243 | 0.657292 | |
C.GO06.BHZ. | 2021-08-12T18:39:44.05 | 10.0 | positive | automatic | P | 280 | 34.8056 | 2.76778 | 0.760303 | |
GT.PLCA.BHZ.00 | 2021-08-12T18:39:26.13 | 10.0 | negative | automatic | P | 279 | 33.4924 | -3.73615 | 0.88863 | |
C1.LL02.BHZ. | 2021-08-12T18:39:23.80 | 10.0 | positive | automatic | P | 275 | 32.4954 | 2.77144 | 0.84851 | |
G.COYC.BHZ.00 | 2021-08-12T18:39:13.10 | 10.0 | positive | automatic | P | 271 | 31.0676 | 4.64829 | 0.848644 | |
C.GO10.BHZ. | 2021-08-12T18:38:30.73 | 10.0 | positive | automatic | P | 259 | 26.3100 | -1.35238 | 0 | |
C1.MG02.BHZ. | 2021-08-12T18:38:17.53 | 10.0 | positive | automatic | P | 261 | 25.5096 | -1.2785 | 0.963855 | |
II.EFI.BHZ.00 | 2021-08-12T18:37:21.02 | 10.0 | positive | automatic | P | 272 | 20.0036 | -2.06022 | 0.963855 | |
II.HOPE.BHZ.00 | 2021-08-12T18:34:39.67 | 10.0 | positive | automatic | P | 288 | 7.2754 | 2.79368 | 0.930233 |