Earthquake with magnitude of Mwp 7.1 on date 19-08-2020 and time 00:29:33 (Italy) in region Southern Sumatera, Indonesia [Sea: Indonesia]

A magnitude Mwp 7.1 earthquake occured in region: Southern Sumatera, Indonesia [Sea: Indonesia], on

  • 18-08-2020 22:29:33 (UTC)
  • 19-08-2020 00:29:33 (UTC +02:00) Italian time
  • 19-08-2020 06:29:33 (UTC +08:00) local time in the region of the earthquake (Asia/Singapore)

and geographic coordinates (lat, lon) -4.029, 101.229 at 93 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 5.6
Mwp 7.1

Mwpd 7.1
2020-08-18
22:29:33
-4.0289 101.229 93 2020-08-18
22:47:49
Sala Sismica INGV-Roma 82129351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-18 22:29:33
Latitude -4.0289
Longitude 101.2290
Depth (km) 93 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 82129351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 22914
Semi-minor axis of confidence ellipse (meter) 13931
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 24
Circular confidence region, given by single value of horizontal uncertainty (meter) 21014.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70.3146
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) 1.86992
Epicentral distance of station closest to the epicenter (degree) 1.75372
Epicentral distance of station farthest from the epicenter (degree) 72.17772
Number of stations at which the event was observed 54
Number of stations from which data was used for origin computation 54
Magnitudes information

Mwp:7.1

Field Value
Value 7.1
Uncertainty 0.1
Num. used stations 21
Type of magnitude Mwp
Reference to an origin 82129351
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-08-18 22:47:49

Mwpd:7.1

Field Value
Value 7.1
Uncertainty 0.1
Num. used stations 20
Type of magnitude Mwpd
Reference to an origin 82129351
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-08-18 22:47:49

mb:5.6

Field Value
Value 5.6
Uncertainty 0.1
Num. used stations 34
Type of magnitude mb
Reference to an origin 82129351
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-08-18 22:47:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.SALP.BHZ. 2020-08-18T22:40:49.27 10.0 positive automatic P 306 72.1777 2.55832 0.252586
IS.GEM.BHZ. 2020-08-18T22:40:48.38 10.0 positive automatic P 307 72.1335 1.97205 0.24445
GE.MSBI.BHZ. 2020-08-18T22:40:47.05 10.0 positive automatic P 305 71.8246 2.56903 0
GE.EIL.BHZ. 2020-08-18T22:40:45.00 10.0 negative automatic P 303 71.7014 1.18199 0.260992
IU.GNI.BHZ.00 2020-08-18T22:40:42.17 10.0 positive automatic pP 317 67.9306 -2.37302 0
IU.YAK.BHZ.00 2020-08-18T22:40:29.57 10.0 positive automatic P 14 69.5539 -1.18993 0.25561
IU.GNI.BHZ.00 2020-08-18T22:40:23.07 10.0 positive automatic P 317 67.9306 2.1301 0.246939
IU.WAKE.BHZ.00 2020-08-18T22:40:23.72 10.0 positive automatic P 67 68.3796 0.247729 0.268283
II.KWJN.BHZ.00 2020-08-18T22:40:18.10 10.0 positive automatic P 78 67.4008 0.760106 0
ND.MARNC.BHZ.00 2020-08-18T22:40:15.85 10.0 positive automatic P 112 66.9568 1.31547 0.303415
G.SANVU.BHZ.00 2020-08-18T22:40:08.65 10.0 positive automatic P 105 65.7808 1.61483 0.303884
ND.ONTNC.BHZ.00 2020-08-18T22:40:07.29 10.0 positive automatic P 113 65.5783 1.55576 0.32019
IU.YSS.BHZ.00 2020-08-18T22:39:46.90 10.0 positive automatic P 31 62.7185 -0.144686 0.340932
IU.CASY.BHZ.00 2020-08-18T22:39:43.82 10.0 positive automatic P 176 62.5889 -2.3436 0.268587
II.RAYN.BHZ.00 2020-08-18T22:39:36.15 10.0 positive automatic P 300 60.851 1.54226 0.356814
JP.JKA.BHZ. 2020-08-18T22:39:34.05 10.0 positive automatic sP 36 58.8123 -9.56788 0
II.ERM.BHZ.00 2020-08-18T22:39:26.87 10.0 negative automatic P 35 59.7083 0.157405 0.405898
JP.JTM.BHZ. 2020-08-18T22:39:12.70 10.0 negative automatic P 35 57.7187 -0.241064 0.455512
II.TAU.BHZ.00 2020-08-18T22:39:07.42 10.0 positive automatic P 141 56.3195 4.34675 0.45489
II.TLY.BHZ.00 2020-08-18T22:38:59.77 10.0 negative automatic P 2 55.7452 0.716286 0.474505
GE.VOI.BHZ. 2020-08-18T22:38:58.45 10.0 positive automatic P 246 55.6299 0.121661 0.465202
II.ABPO.BHZ.00 2020-08-18T22:38:52.12 10.0 positive automatic P 249 54.742 0.109829 0.467771
G.CAN.BHZ.00 2020-08-18T22:38:48.05 10.0 negative automatic P 132 54.0039 1.52703 0.478838
GE.SOEI.BHZ. 2020-08-18T22:38:43.27 10.0 positive automatic S 105 23.5649 2.88562 0
IU.MAKZ.BHZ.00 2020-08-18T22:38:43.37 10.0 positive automatic P 344 53.6026 -0.206959 0.52039
IU.MAJO.BHZ.00 2020-08-18T22:38:39.62 10.0 positive automatic P 37 53.2426 -1.29097 0.44035
II.AAK.BHZ.00 2020-08-18T22:38:37.47 10.0 positive automatic P 335 52.5673 1.3131 0.512395
II.UOSS.BHZ.00 2020-08-18T22:38:36.27 10.0 positive automatic P 306 52.4336 1.33518 0.451506
AU.EIDS.BHZ. 2020-08-18T22:38:34.00 10.0 positive automatic P 119 52.3184 0.918614 0.498925
IU.ULN.BHZ.00 2020-08-18T22:38:33.07 10.0 positive automatic P 5 52.1428 0.0582222 0.507317
JP.JGF.BHZ. 2020-08-18T22:38:31.55 10.0 positive automatic P 37 52.1034 -0.992191 0.399087
G.INU.BHZ.00 2020-08-18T22:38:28.91 10.0 positive automatic P 37 51.7367 -0.834021 0.410912
JP.JSU.BHZ. 2020-08-18T22:37:38.30 10.0 positive automatic P 36 45.1295 -0.779419 0.622028
AU.COEN.BHZ. 2020-08-18T22:37:17.40 10.0 negative automatic P 106 42.5234 -0.802623 0.707848
JP.JMZ.BHZ. 2020-08-18T22:37:12.65 10.0 positive automatic P 43 41.66 1.51088 0.683095
JP.JOW.BHZ. 2020-08-18T22:37:01.70 10.0 negative automatic P 39 40.4407 0.527532 0.674571
GE.GENI.BHZ. 2020-08-18T22:36:47.22 10.0 negative automatic P 89 38.8951 -1.10748 0.750872
JP.YOJ.BHZ. 2020-08-18T22:36:19.40 10.0 positive automatic P 36 35.5076 -0.277168 0.575903
IU.TATO.BHZ.00 2020-08-18T22:36:14.92 10.0 positive automatic P 33 35.0527 -0.879526 0.473613
IU.NWAO.BHZ.00 2020-08-18T22:35:50.95 10.0 negative automatic P 155 32.5404 -3.12274 0.877178
GE.FAKI.BHZ. 2020-08-18T22:35:39.17 10.0 positive automatic P 89 30.9795 -1.16434 0.814941
AU.FITZ.BHZ. 2020-08-18T22:35:09.63 10.0 negative automatic P 122 27.7188 -1.83751 0.963855
RM.SLV.BHZ. 2020-08-18T22:34:51.47 10.0 negative automatic P 6 25.4885 -0.0487986 0.952381
GE.SANI.BHZ. 2020-08-18T22:34:44.77 10.0 positive automatic P 86 24.8006 -0.405562 0.952381
GE.HALK.BHZ. 2020-08-18T22:34:37.60 10.0 negative automatic pP 296 22.8756 -8.57754 0
IU.CHTO.BHZ.00 2020-08-18T22:34:27.17 10.0 positive automatic P 354 22.9525 -1.22285 0.930233
GE.LUWI.BHZ. 2020-08-18T22:34:16.27 10.0 negative automatic P 83 21.7243 0.750156 0.952381
II.KAPI.BHZ.00 2020-08-18T22:33:39.60 10.0 positive automatic P 94 18.4899 -1.04656 0.952381
IN.PBA.HHZ. 2020-08-18T22:33:32.77 10.0 positive automatic P 332 17.8101 -0.378374 0.947867
GE.LHMI.BHZ. 2020-08-18T22:31:51.22 10.0 negative automatic P 335 10.1975 -4.04158 0.97561
GE.SMRI.BHZ. 2020-08-18T22:31:48.07 10.0 positive automatic P 109 9.6518 0.201282 0.97561
MY.KUM.BHZ. 2020-08-18T22:31:41.77 10.0 negative automatic P 356 9.3367 -1.78573 0.952381
MY.IPM.BHZ. 2020-08-18T22:31:36.37 10.0 positive automatic P 359 8.5105 4.03153 0.952381
GE.PMBI.BHZ. 2020-08-18T22:30:28.82 10.0 positive automatic P 72 3.6424 2.69496 0.952381
GE.MNAI.BHZ. 2020-08-18T22:30:14.47 10.0 positive automatic S 101 1.7537 -7.67585 0
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