Earthquake with magnitude of Mwp 6.1 on date 23-10-2017 and time 10:32:33 (Italy) in region Southwest of Africa [Sea]

A magnitude Mwp 6.1 earthquake occured in region: Southwest of Africa [Sea], on

  • 23-10-2017 08:32:33 (UTC)
  • 23-10-2017 10:32:33 (UTC +02:00) Italian time
  • 23-10-2017 11:32:33 (UTC +03:00) local time in the region of the earthquake (Antarctica/Syowa)

and geographic coordinates (lat, lon) -52.39, 17.24 at 1 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 6.1

Mwpd 6.1
2017-10-23
08:32:33
-52.39 17.24 1 2017-10-23
08:51:56
Sala Sismica INGV-Roma 51242561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-10-23 08:32:33
Latitude -52.39
Longitude 17.24
Depth (km) 1 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 51242561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 31434
Semi-minor axis of confidence ellipse (meter) 1101
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 305
Circular confidence region, given by single value of horizontal uncertainty (meter) 25373.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64.6498
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) 2.88675
Epicentral distance of station closest to the epicenter (degree) 20.17641
Epicentral distance of station farthest from the epicenter (degree) 95.08721
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 44
Magnitudes information

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 14
Type of magnitude Mwpd
Reference to an origin 51242561
Agency INGV
Autore Auto added
Time of creation (UTC) 2017-10-23 08:51:56

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 13
Type of magnitude Mwp
Reference to an origin 51242561
Agency INGV
Autore Auto added
Time of creation (UTC) 2017-10-23 08:51:56

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 41
Type of magnitude mb
Reference to an origin 51242561
Agency INGV
Autore Auto added
Time of creation (UTC) 2017-10-23 08:51:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.CTAO.BHZ.00 2017-10-23T08:45:58.47 10.0 negative automatic P 133 95.0872 1.67607 0.0610647
AU.EIDS.BHZ. 2017-10-23T08:45:46.85 10.0 negative automatic P 139 92.4357 2.26881 0.0763643
HT.FNA.HHZ. 2017-10-23T08:45:46.06 10.0 negative automatic P 3 93.2369 -2.31131 0.0761663
KO.GAZ.BHZ. 2017-10-23T08:45:41.48 10.0 positive automatic P 16 91.2338 2.33349 0.0892592
NZ.OUZ.HHZ.10 2017-10-23T08:45:38.19 10.0 negative automatic P 161 89.9865 5.00978 0.0933162
II.WRAB.BHZ.00 2017-10-23T08:45:32.07 10.0 positive automatic P 123 89.5078 1.07179 0.0975117
AU.QLP.BHZ. 2017-10-23T08:45:28.47 10.0 positive automatic P 134 88.502 2.2327 0.103412
AU.ARMA.BHZ. 2017-10-23T08:45:28.95 10.0 negative automatic P 142 88.1094 4.40704 0.102609
NZ.URZ.HHZ.10 2017-10-23T08:45:24.03 10.0 negative automatic P 164 87.668 1.76506 0.108173
II.UOSS.BHZ.00 2017-10-23T08:45:03.92 10.0 negative automatic P 35 84.4797 -2.62791 0.132526
GE.EIL.BHZ. 2017-10-23T08:45:00.25 10.0 negative automatic P 15 83.508 -1.3208 0.12581
AU.WRKA.BHZ. 2017-10-23T08:44:56.05 10.0 negative automatic P 121 82.1465 1.47297 0.150167
G.CAN.BHZ.00 2017-10-23T08:44:47.50 10.0 positive automatic P 142 82.7383 -10.1723 0.134371
IU.MBWA.BHZ.00 2017-10-23T08:44:47.35 10.0 negative automatic P 113 80.6258 0.911962 0.154483
AU.HTT.BHZ. 2017-10-23T08:44:46.50 10.0 negative automatic P 134 80.2713 1.88376 0.168454
AU.TOO.BHZ. 2017-10-23T08:44:45.25 10.0 negative automatic P 141 79.4198 5.26712 0.168413
IU.SAML.BHZ.00 2017-10-23T08:44:25.62 10.0 positive automatic P 272 77.079 -1.30757 0.203306
IU.NWAO.BHZ.00 2017-10-23T08:43:47.22 10.0 negative automatic P 118 70.0194 1.78659 0.280512
GE.LVC.BHZ.00 2017-10-23T08:43:46.67 10.0 positive automatic P 259 69.9676 1.11823 0.251218
C.GO02.BHZ. 2017-10-23T08:43:36.93 10.0 negative automatic P 256 68.4422 0.89655 0.292493
IU.LCO.BHZ.00 2017-10-23T08:43:22.52 10.0 positive automatic P 253 66.2066 0.708183 0.327368
C.GO04.BHZ. 2017-10-23T08:43:18.83 10.0 positive automatic P 252 65.4003 2.2405 0.326094
C1.CO02.BHZ. 2017-10-23T08:43:13.30 10.0 negative automatic P 251 64.7536 1.0787 0.354619
G.PEL.BHZ.00 2017-10-23T08:43:02.40 10.0 negative automatic P 250 63.1425 0.871029 0.350934
WA.ZON.HHZ. 2017-10-23T08:43:01.91 10.0 negative automatic P 252 63.1612 0.243376 0.345974
C.GO05.BHZ. 2017-10-23T08:42:59.33 10.0 positive automatic P 247 62.4972 2.19807 0.371995
C1.BO02.BHZ. 2017-10-23T08:42:53.37 10.0 positive automatic P 248 62.0053 -0.596693 0.369973
GT.DBIC.BHZ.00 2017-10-23T08:42:49.95 10.0 negative automatic P 335 61.9871 -3.76295 0.388058
GT.CPUP.BHZ.00 2017-10-23T08:42:40.48 10.0 positive automatic P 265 60.2013 -1.11615 0.399002
C.GO06.BHZ. 2017-10-23T08:42:32.65 10.0 positive automatic P 244 58.9748 -0.670592 0.421163
GT.PLCA.BHZ.00 2017-10-23T08:42:23.28 10.0 negative automatic P 244 57.6692 -0.886509 0.425157
C1.LL02.BHZ. 2017-10-23T08:42:15.95 10.0 negative automatic P 241 56.6793 -1.08595 0.43934
G.COYC.BHZ.00 2017-10-23T08:42:09.50 10.0 positive automatic P 238 55.191 3.14567 0.405771
II.MBAR.BHZ.00 2017-10-23T08:41:51.22 10.0 positive automatic P 17 53.0052 0.631334 0.517544
IU.SBA.BHZ.00 2017-10-23T08:41:18.47 10.0 positive automatic P 172 48.4129 2.76084 0.548182
IU.CASY.BHZ.00 2017-10-23T08:40:49.62 10.0 negative automatic P 145 44.6709 3.28887 0.629935
GE.VOI.BHZ. 2017-10-23T08:39:53.25 10.0 positive automatic P 48 37.8463 2.85738 0.720755
IU.TSUM.BHZ.00 2017-10-23T08:39:09.27 10.0 negative automatic P 1 33.1872 -1.1191 0.906011
GT.LBTB.BHZ.00 2017-10-23T08:38:24.20 10.0 positive automatic P 16 28.0969 -1.21717 0.91954
AU.MAW.BHZ. 2017-10-23T08:38:04.21 10.0 positive automatic P 142 26.4878 -6.56114 0.963855
GT.BOSA.BHZ.00 2017-10-23T08:37:51.48 10.0 negative automatic P 17 24.5083 -1.54462 0.952381
GE.SNAA.BHZ. 2017-10-23T08:37:19.01 10.0 positive automatic P 197 21.2107 -0.221573 0.930233
AF.GRHM.BHZ. 2017-10-23T08:37:09.75 10.0 negative automatic P 23 20.2149 1.34145 0.909091
II.SUR.BHZ.00 2017-10-23T08:37:08.37 10.0 positive automatic P 9 20.1764 0.179678 0.888889
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