Earthquake with magnitude of Mwp 6.4 on date 15-11-2018 and time 21:02:27 (Italy) in region South Georgia & the South Sandwich Is. [Sea]

A magnitude Mwp 6.4 earthquake occured in region: South Georgia & the South Sandwich Is. [Sea], on

  • 15-11-2018 20:02:27 (UTC)
  • 15-11-2018 21:02:27 (UTC +01:00) Italian time
  • 15-11-2018 18:02:27 (UTC -02:00) local time in the region of the earthquake (Atlantic/South_Georgia)

and geographic coordinates (lat, lon) -56.76, -25.57 at 31 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
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
Rev 100 mb 5.4
Mwp 6.4

Mwpd 6.6
2018-11-15
20:02:27
-56.76 -25.57 31 2018-11-15
20:29:51
Sala Sismica INGV-Roma 63100751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-15 20:02:27
Latitude -56.76
Longitude -25.57
Depth (km) 31 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 63100751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 16567
Semi-minor axis of confidence ellipse (meter) 15192
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 8
Circular confidence region, given by single value of horizontal uncertainty (meter) 16238.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68.8673
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.21801
Epicentral distance of station closest to the epicenter (degree) 6.64608
Epicentral distance of station farthest from the epicenter (degree) 93.0482
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 44
Magnitudes information

Mwp:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 37
Type of magnitude Mwp
Reference to an origin 63100751
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-11-15 20:29:51

Mwpd:6.6

Field Value
Value 6.6
Uncertainty 0.1
Num. used stations 36
Type of magnitude Mwpd
Reference to an origin 63100751
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-11-15 20:29:51

mb:5.4

Field Value
Value 5.4
Uncertainty 0.2
Num. used stations 45
Type of magnitude mb
Reference to an origin 63100751
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-11-15 20:29:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.TEIG.BHZ.00 2018-11-15T20:15:35.22 10.0 positive automatic P 303 93.0482 -1.52682 0.0979945
CU.GTBY.BHZ.00 2018-11-15T20:15:08.05 10.0 positive automatic P 314 87.164 -1.28726 0.0524215
NZ.OUZ.HHZ.10 2018-11-15T20:15:07.48 10.0 positive automatic P 196 86.5959 0.313293 0.10687
CU.MTDJ.BHZ.00 2018-11-15T20:15:05.83 10.0 positive automatic P 311 86.5984 -0.893849 0.114333
NZ.URZ.HHZ.10 2018-11-15T20:14:49.25 10.0 positive automatic P 198 83.0625 0.733318 0.116165
II.JTS.BHZ.00 2018-11-15T20:14:46.52 10.0 positive automatic P 301 82.7968 -1.03147 0.134222
IU.SJG.BHZ.00 2018-11-15T20:14:41.37 10.0 positive automatic P 321 82.1919 -1.97639 0.0435049
IU.SNZO.BHZ.00 2018-11-15T20:14:36.30 10.0 positive automatic P 195 80.4519 1.20399 0.131118
II.TAU.BHZ.00 2018-11-15T20:14:34.32 10.0 positive automatic P 175 80.151 0.425705 0.133678
CU.ANWB.BHZ.00 2018-11-15T20:14:32.60 10.0 positive automatic P 325 80.3481 -1.87179 0.0783329
NZ.KHZ.HHZ.10 2018-11-15T20:14:31.15 10.0 positive automatic P 194 79.5271 0.83349 0.0454785
CU.BCIP.BHZ.00 2018-11-15T20:14:28.17 10.0 positive automatic P 305 79.4605 -0.60704 0.117634
NZ.ODZ.HHZ.10 2018-11-15T20:14:19.95 10.0 positive automatic P 192 77.2927 1.50855 0.140415
GE.KMBO.BHZ.00 2018-11-15T20:14:05.17 10.0 positive automatic P 67 74.5248 1.42608 0.0713754
CU.GRGR.BHZ.00 2018-11-15T20:14:03.52 10.0 positive automatic P 323 75.0822 -0.473542 0.129272
II.MBAR.BHZ.00 2018-11-15T20:13:47.62 10.0 positive automatic P 61 71.7659 1.02119 0.161793
IU.OTAV.BHZ.00 2018-11-15T20:13:39.97 10.0 positive automatic P 302 70.8872 -0.268226 0.218022
II.NNA.BHZ.00 2018-11-15T20:12:24.17 10.0 positive automatic P 298 59.3857 -0.950969 0.266728
IU.LSZ.BHZ.00 2018-11-15T20:12:12.92 10.0 positive automatic P 67 57.7894 -1.8823 0.153343
IU.CASY.BHZ.00 2018-11-15T20:11:38.77 10.0 positive automatic P 159 52.6419 0.856396 0.250056
GT.LPAZ.BHZ.00 2018-11-15T20:11:28.93 10.0 positive automatic P 304 51.5236 0.14424 0.401724
AF.POGA.BHZ. 2018-11-15T20:11:15.15 10.0 positive automatic P 79 49.6524 0.69047 0.34065
IU.TSUM.BHZ.00 2018-11-15T20:11:10.97 10.0 positive automatic P 58 49.2498 -1.04947 0.399715
GT.LBTB.BHZ.00 2018-11-15T20:11:03.05 10.0 positive automatic P 71 48.3045 -1.53608 0.329687
GT.BOSA.BHZ.00 2018-11-15T20:10:39.15 10.0 positive automatic P 74 45.208 -0.967279 0.425907
C.GO02.BHZ. 2018-11-15T20:10:34.35 10.0 positive automatic P 296 44.5657 -1.4539 0.395418
AF.GRHM.BHZ. 2018-11-15T20:10:17.57 10.0 positive automatic P 79 42.1495 1.59127 0.462238
AF.SOE.BHZ. 2018-11-15T20:10:16.15 10.0 positive automatic P 77 42.1466 0.155296 0.462303
IU.LCO.BHZ.00 2018-11-15T20:10:13.07 10.0 positive automatic P 292 41.9376 -0.603612 0.477792
C.GO04.BHZ. 2018-11-15T20:10:05.98 10.0 positive automatic P 291 41.0474 -1.23231 0.261555
II.SUR.BHZ.00 2018-11-15T20:09:58.07 10.0 positive automatic P 72 39.8909 -0.325818 0.540755
GT.CPUP.BHZ.00 2018-11-15T20:09:39.55 10.0 positive automatic P 310 37.9317 -0.395587 0.790313
C.GO05.BHZ. 2018-11-15T20:09:38.15 10.0 positive automatic P 285 37.8397 -2.04345 0.445527
C1.BO02.BHZ. 2018-11-15T20:09:35.15 10.0 positive automatic P 286 37.3998 -1.39802 0.608117
C.GO06.BHZ. 2018-11-15T20:09:10.23 10.0 positive automatic P 280 34.2118 0.938793 0.735675
IU.QSPA.BHZ.00 2018-11-15T20:09:02.22 10.0 positive automatic P 180 33.3123 0.484217 0.952219
GT.PLCA.BHZ.00 2018-11-15T20:08:55.90 10.0 positive automatic P 280 32.9015 -0.874818 0.75089
C1.LL01.BHZ. 2018-11-15T20:08:54.75 10.0 positive automatic P 276 32.7812 -1.87134 0.426087
C1.LL02.BHZ. 2018-11-15T20:08:49.18 10.0 positive automatic P 275 31.9306 -0.0435099 0.412588
C1.MG02.BHZ. 2018-11-15T20:07:47.85 10.0 positive automatic P 260 25.0504 0.0492988 0.963855
IU.PMSA.BHZ.00 2018-11-15T20:06:58.47 10.0 positive automatic P 231 20.0322 0.846529 0.297801
II.EFI.BHZ.00 2018-11-15T20:06:50.57 10.0 positive automatic P 271 19.4614 0.498064 0.43956
GE.SNAA.BHZ. 2018-11-15T20:06:29.61 10.0 positive automatic P 156 17.6511 1.40121 1.47556
II.HOPE.BHZ.00 2018-11-15T20:04:02.42 10.0 positive automatic P 287 6.6461 0.551836 1.87581
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