Earthquake with magnitude of Mwp 6.1 on date 19-10-2020 and time 09:31:31 (Italy) in region Southern Sumatera, Indonesia [Sea: Indonesia]

A magnitude Mwp 6.1 earthquake occured in region: Southern Sumatera, Indonesia [Sea: Indonesia], on

  • 19-10-2020 07:31:31 (UTC)
  • 19-10-2020 09:31:31 (UTC +02:00) Italian time
  • 19-10-2020 15:31:31 (UTC +08:00) local time in the region of the earthquake (Asia/Singapore)

and geographic coordinates (lat, lon) -3.298, 100.357 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.

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 adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent 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 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
Reviewed
Rev100
mb 5.4
Mwp 6.1

Mwpd 6.2
2020-10-19
07:31:31
-3.2977 100.357 20 2020-10-19
07:44:22
Sala Sismica INGV-Roma 83903471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-19 07:31:31
Latitude -3.2977
Longitude 100.3570
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 83903471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 8333
Semi-minor axis of confidence ellipse (meter) 1979
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 6730.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94.2892
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.97921
Epicentral distance of station closest to the epicenter (degree) 2.8021
Epicentral distance of station farthest from the epicenter (degree) 70.99877
Number of stations at which the event was observed 45
Number of stations from which data was used for origin computation 45
Magnitudes information

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 26
Type of magnitude Mwp
Reference to an origin 83903471
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-10-19 07:44:22

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 14
Type of magnitude Mwpd
Reference to an origin 83903471
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-10-19 07:44:22

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 32
Type of magnitude mb
Reference to an origin 83903471
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-10-19 07:44:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IS.GEM.BHZ. 2020-10-19T07:42:48.85 10.0 positive automatic P 307 70.9988 1.74854 0
IU.YAK.BHZ.00 2020-10-19T07:42:32.97 10.0 positive automatic P 14 69.0552 -2.18126 0.285229
G.SANVU.BHZ.00 2020-10-19T07:42:22.00 10.0 positive automatic P 105 66.8128 0.961018 0
IU.YSS.BHZ.00 2020-10-19T07:41:52.10 10.0 positive automatic P 31 62.5384 -1.06272 0.36712
JP.JKA.BHZ. 2020-10-19T07:41:39.60 10.0 negative automatic sP 36 58.7313 4.32099 0
AU.MANU.BHZ.00 2020-10-19T07:41:37.98 10.0 positive automatic PcP 90 46.9688 5.40461 0
II.RAYN.BHZ.00 2020-10-19T07:41:34.65 10.0 positive automatic P 300 59.7326 0.4216 0.266243
IU.HNR.BHZ.00 2020-10-19T07:41:31.80 10.0 positive automatic P 99 59.4713 -0.533909 0.414048
JP.JTM.BHZ. 2020-10-19T07:41:18.35 10.0 positive automatic P 36 57.6265 -1.12612 0.288209
AU.ARMA.BHZ. 2020-10-19T07:41:06.35 10.0 negative automatic P 125 55.4051 2.5173 0.479747
G.CAN.BHZ.00 2020-10-19T07:41:03.45 10.0 negative automatic P 132 55.1399 1.60283 0.441778
AU.TOO.BHZ.00 2020-10-19T07:41:01.50 10.0 positive automatic sP 136 53.6068 2.75943 0
AU.EIDS.BHZ. 2020-10-19T07:40:49.55 10.0 positive automatic P 119 53.4351 0.192444 0.32745
IU.MAJO.BHZ.00 2020-10-19T07:40:45.17 10.0 positive automatic P 38 53.193 -2.43666 0.459796
IU.MAKZ.BHZ.00 2020-10-19T07:40:42.35 10.0 positive automatic P 344 52.6597 -1.35924 0.499325
JP.JGF.BHZ. 2020-10-19T07:40:36.95 10.0 positive automatic P 38 52.0604 -2.30112 0.447566
II.AAK.BHZ.00 2020-10-19T07:40:35.32 10.0 positive automatic P 336 51.5418 -0.24422 0.505207
IU.ULN.BHZ.00 2020-10-19T07:40:34.32 10.0 positive automatic P 6 51.4957 -0.894937 0.517411
JP.JMN.BHZ. 2020-10-19T07:40:12.75 10.0 positive automatic P 38 48.6786 -0.907622 0.538062
AU.QLP.BHZ. 2020-10-19T07:40:08.90 10.0 positive automatic P 123 47.9857 0.64059 0.531614
IU.CTAO.BHZ.00 2020-10-19T07:40:06.55 10.0 positive automatic P 114 47.7545 0.0560712 0.591161
AU.HTT.BHZ. 2020-10-19T07:40:00.67 10.0 negative automatic P 135 46.9074 0.712154 0.627495
IU.PMG.BHZ.00 2020-10-19T07:39:58.52 10.0 positive automatic P 100 46.8728 -1.06094 0.521332
II.NIL.BHZ.00 2020-10-19T07:39:43.27 10.0 positive automatic P 328 44.9243 -1.02782 0.611659
IU.NWAO.BHZ.00 2020-10-19T07:38:10.87 10.0 positive automatic P 154 33.5775 1.32575 0.855893
GE.FAKI.BHZ. 2020-10-19T07:37:52.72 10.0 positive automatic P 90 31.8445 -1.60858 0.833458
AU.MORW.BHZ. 2020-10-19T07:37:37.92 10.0 positive automatic P 152 29.7649 1.90816 0.930233
IU.MBWA.BHZ.00 2020-10-19T07:37:02.55 10.0 positive automatic P 135 25.9617 0.569266 0.43956
RM.SLV.BHZ. 2020-10-19T07:36:50.72 10.0 positive automatic P 8 24.866 -1.38103 0.909091
GE.MALK.BHZ. 2020-10-19T07:36:40.67 10.0 positive automatic sP 301 22.9602 -0.751468 0
GE.LUWI.BHZ. 2020-10-19T07:36:28.02 10.0 positive automatic P 85 22.5093 -1.06992 0
GE.HALK.BHZ. 2020-10-19T07:36:26.10 10.0 positive automatic pP 296 21.7739 4.82878 0.952381
IU.CHTO.BHZ.00 2020-10-19T07:36:22.47 10.0 positive automatic P 356 22.1544 -2.91529 0.43956
II.KAPI.BHZ.00 2020-10-19T07:35:55.35 10.0 positive automatic P 96 19.4176 -0.42946 0.851064
MY.KKM.BHZ. 2020-10-19T07:35:44.47 10.0 positive automatic P 59 18.3849 -0.0612173 0.784314
GE.JAGI.BHZ. 2020-10-19T07:34:53.12 10.0 positive automatic P 111 14.6595 -3.88899 0.43956
MY.SBM.BHZ. 2020-10-19T07:34:39.97 10.0 positive automatic P 64 13.1725 3.23503 0.869565
GE.SMRI.BHZ. 2020-10-19T07:34:05.02 10.0 positive automatic P 111 10.7181 1.85965 0.43956
II.COCO.BHZ.00 2020-10-19T07:33:44.35 10.0 positive automatic P 201 9.551 -2.80223 0.97561
MY.KUM.BHZ. 2020-10-19T07:33:33.17 10.0 positive automatic P 2 8.5924 -0.846859 0.851064
MY.IPM.BHZ. 2020-10-19T07:33:24.22 10.0 positive automatic P 5 7.8054 0.973952 0.833333
MY.KOM.BHZ. 2020-10-19T07:33:01.37 10.0 positive automatic P 34 6.1702 0.603978 0.952381
GE.GSI.BHZ. 2020-10-19T07:32:48.62 10.0 positive automatic P 329 5.3761 -1.24649 0.43956
GE.BKNI.BHZ. 2020-10-19T07:32:27.17 10.0 positive automatic P 11 3.6873 0.527188 0.930233
GE.MNAI.BHZ. 2020-10-19T07:32:14.97 10.0 positive automatic P 112 2.8021 0.480122 0.97561
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