ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Mwp 6.5 on date 31-08-2017 and time 19:06:58 (Italy) in region Southern Sumatera, Indonesia [Sea: Indonesia]

A magnitude Mwp 6.5 earthquake occured in region: Southern Sumatera, Indonesia [Sea: Indonesia], on

  • 31-08-2017 17:06:58 (UTC)
  • 31-08-2017 19:06:58 (UTC +02:00) Italian time
  • 01-09-2017 01:06:58 (UTC +08:00) local time in the region of the earthquake (Asia/Kuala_Lumpur)

and geographic coordinates (lat, lon) -1.14, 99.78 at 74 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 5.5
Mwp 6.5

Mwpd 6.6
2017-08-31
17:06:58
-1.14 99.78 74 2017-08-31
17:26:50
Sala Sismica INGV-Roma 49549171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-31 17:06:58
Latitude -1.14
Longitude 99.78
Depth (km) 74 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 49549171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6045
Semi-minor axis of confidence ellipse (meter) 4839
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 6263.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68.5797
Number of associated phases, regardless of their use for origin computation 96
Number of defining phases 96
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.5653
Epicentral distance of station closest to the epicenter (degree) 1.93677
Epicentral distance of station farthest from the epicenter (degree) 75.14249
Number of stations at which the event was observed 88
Number of stations from which data was used for origin computation 88
Magnitudes information

Mwpd:6.6

Field Value
Value 6.6
Uncertainty 0.1
Num. used stations 39
Type of magnitude Mwpd
Reference to an origin 49549171
Agency INGV
Autore Auto added
Time of creation (UTC) 2017-08-31 17:26:50

Mwp:6.5

Field Value
Value 6.5
Uncertainty 0.1
Num. used stations 49
Type of magnitude Mwp
Reference to an origin 49549171
Agency INGV
Autore Auto added
Time of creation (UTC) 2017-08-31 17:26:50

mb:5.5

Field Value
Value 5.5
Uncertainty 0.2
Num. used stations 60
Type of magnitude mb
Reference to an origin 49549171
Agency INGV
Autore Auto added
Time of creation (UTC) 2017-08-31 17:26:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.ANTO.BHZ.00 2017-08-31T17:18:41.02 10.0 negative automatic pP 312 73.303 -0.495581 0
IU.LSZ.BHZ.00 2017-08-31T17:18:32.12 10.0 negative automatic PcP 254 71.9456 -0.0355704 0
IU.PET.BHZ.00 2017-08-31T17:18:19.15 10.0 positive automatic P 33 72.8428 0.126801 0.248092
IU.TIXI.BHZ.00 2017-08-31T17:18:31.22 10.0 positive automatic P 9 75.1425 -1.19921 0
GE.ISP.BHZ.00 2017-08-31T17:18:28.40 10.0 positive automatic P 310 74.4952 -0.469811 0
IU.ANTO.BHZ.00 2017-08-31T17:18:21.32 10.0 positive automatic P 312 73.303 -0.588082 0.245932
IS.KZIT.BHZ. 2017-08-31T17:18:19.21 10.0 negative automatic pP 304 69.684 -0.233341 0
IU.MA2.BHZ.00 2017-08-31T17:18:17.12 10.0 positive automatic P 24 72.4504 0.386563 0
GE.CSS.BHZ. 2017-08-31T17:18:12.35 10.0 positive automatic P 308 71.5751 0.839082 0.169536
IS.KZIT.BHZ. 2017-08-31T17:18:01.51 10.0 positive automatic P 304 69.684 1.52185 0.183785
GE.SALP.BHZ. 2017-08-31T17:17:59.07 10.0 positive automatic P 305 69.3248 1.25046 0.141002
KO.GAZ.BHZ. 2017-08-31T17:17:58.00 10.0 positive automatic P 311 69.2047 0.834102 0.272026
IS.GEM.BHZ. 2017-08-31T17:17:58.53 10.0 positive automatic P 306 69.2476 1.22541 0.293135
GE.EIL.BHZ. 2017-08-31T17:17:56.25 10.0 positive automatic P 303 68.9178 0.998077 0.286791
G.DZM.BHZ.00 2017-08-31T17:17:51.05 10.0 negative automatic P 113 68.0054 1.36925 0.312184
ND.ONTNC.BHZ.00 2017-08-31T17:17:50.95 10.0 negative automatic P 114 68.0481 1.13596 0.290397
IU.YAK.BHZ.00 2017-08-31T17:17:42.37 10.0 positive automatic P 15 67.1133 -1.55964 0.308491
II.ARU.BHZ.00 2017-08-31T17:17:38.97 10.0 positive automatic P 337 66.4649 -0.860251 0.324017
ND.KOUNC.BHZ.00 2017-08-31T17:17:36.79 10.0 positive automatic P 112 65.7986 1.25859 0.324799
IU.CASY.BHZ.00 2017-08-31T17:17:35.17 10.0 negative automatic P 175 65.5794 1.05735 0.160057
KO.SIRT.BHZ. 2017-08-31T17:17:32.68 10.0 positive automatic P 313 65.4191 -0.576014 0
IU.GNI.BHZ.00 2017-08-31T17:17:30.07 10.0 positive automatic P 316 64.8405 0.465433 0.273373
GE.KMBO.BHZ.00 2017-08-31T17:17:17.32 10.0 negative automatic P 269 62.5082 3.0025 0.367456
IU.YSS.BHZ.00 2017-08-31T17:17:04.00 10.0 positive automatic P 32 61.0091 0.0559721 0.396996
KZ.ABKAR.BHZ. 2017-08-31T17:17:02.40 10.0 positive automatic P 331 60.9198 -0.974591 0.407965
IU.HNR.BHZ.00 2017-08-31T17:16:59.92 10.0 positive automatic P 100 60.4028 0.105932 0.340673
II.TAU.BHZ.00 2017-08-31T17:16:54.92 10.0 negative automatic P 141 59.4742 1.45812 0.409123
II.BRVK.BHZ.00 2017-08-31T17:16:52.62 10.0 positive automatic P 340 59.5281 -1.24605 0.408363
AU.ARMA.BHZ. 2017-08-31T17:16:38.97 10.0 positive automatic P 126 57.1328 1.65621 0.45881
G.CAN.BHZ.00 2017-08-31T17:16:37.20 10.0 positive automatic P 133 57.0158 0.783286 0.424767
JP.JTM.BHZ. 2017-08-31T17:16:30.60 10.0 positive automatic P 37 56.2344 -0.181058 0.456083
GE.VOI.BHZ. 2017-08-31T17:16:29.25 10.0 positive automatic P 244 55.641 2.55841 0.47603
AU.TOO.BHZ. 2017-08-31T17:16:27.77 10.0 positive automatic P 137 55.5624 1.71048 0.460786
AU.EIDS.BHZ. 2017-08-31T17:16:22.25 10.0 positive automatic P 121 55.0155 0.181828 0.485708
II.KURK.BHZ.00 2017-08-31T17:16:20.82 10.0 positive automatic P 344 54.9019 -0.420266 0.499364
JP.JMM.BHZ. 2017-08-31T17:16:16.75 10.0 positive automatic P 40 54.3142 -0.219037 0.496671
JP.JSD.BHZ. 2017-08-31T17:16:05.40 10.0 positive automatic P 38 52.8317 -0.735546 0.508152
AU.RABL.BHZ. 2017-08-31T17:16:02.07 10.0 positive automatic P 94 52.4058 -0.94302 0.318551
IU.MAJO.BHZ.00 2017-08-31T17:15:58.17 10.0 positive automatic P 39 51.8733 -0.919362 0.500066
KZ.KKAR.BHZ. 2017-08-31T17:15:55.13 10.0 positive automatic P 333 51.449 -0.822208 0.549275
JP.JGF.BHZ. 2017-08-31T17:15:50.15 10.0 positive automatic P 40 50.7527 -0.5884 0.529048
G.INU.BHZ.00 2017-08-31T17:15:47.51 10.0 positive automatic P 40 50.3875 -0.402618 0.560321
IU.MAKZ.BHZ.00 2017-08-31T17:15:47.65 10.0 positive automatic P 344 50.4283 -0.658353 0.55964
II.UOSS.BHZ.00 2017-08-31T17:15:42.07 10.0 positive automatic P 305 49.5789 0.24942 0.535644
AU.QLP.BHZ. 2017-08-31T17:15:42.85 10.0 positive automatic P 125 49.6743 0.311852 0.56556
IU.ULN.BHZ.00 2017-08-31T17:15:40.17 10.0 positive automatic P 6 49.4142 -0.622614 0.550477
II.AAK.BHZ.00 2017-08-31T17:15:40.67 10.0 positive automatic P 336 49.3394 0.443062 0.551687
IU.CTAO.BHZ.00 2017-08-31T17:15:38.42 10.0 positive automatic P 116 49.1944 -0.484595 0.566922
II.SIMI.BHZ.00 2017-08-31T17:15:34.52 10.0 positive automatic P 328 48.8183 -1.44666 0.5939
JP.JMN.BHZ. 2017-08-31T17:15:25.15 10.0 positive automatic P 39 47.3531 0.381722 0.571325
IU.INCN.BHZ.00 2017-08-31T17:15:12.22 10.0 positive automatic P 30 45.9088 -1.17697 0.608621
JP.JTU.BHZ. 2017-08-31T17:15:07.75 10.0 positive automatic P 35 45.1883 0.0384611 0.593936
JP.JNU.BHZ. 2017-08-31T17:15:06.95 10.0 positive automatic P 38 45.082 -0.00247317 0.637242
AU.COEN.BHZ. 2017-08-31T17:15:03.10 10.0 positive automatic P 109 44.778 -1.40151 0.665829
JP.JSU.BHZ. 2017-08-31T17:14:56.15 10.0 positive automatic P 39 43.7212 0.0743814 0.63202
GE.GENI.BHZ. 2017-08-31T17:14:28.32 10.0 positive automatic P 93 40.3916 -0.598147 0.722461
AU.FORT.BHZ. 2017-08-31T17:14:25.57 10.0 positive automatic P 141 39.945 0.328481 0.748256
JP.JOW.BHZ. 2017-08-31T17:14:19.75 10.0 positive automatic P 42 39.1891 0.780298 0.728235
II.WRAB.BHZ.00 2017-08-31T17:14:13.07 10.0 positive automatic P 121 38.6806 -1.68327 0.737723
AU.WRKA.BHZ. 2017-08-31T17:13:55.70 10.0 negative automatic P 133 36.4488 -0.2611 0.827087
IU.NWAO.BHZ.00 2017-08-31T17:13:50.72 10.0 positive automatic P 154 35.7698 0.602803 0.830991
AU.KDU.BHZ. 2017-08-31T17:13:35.40 10.0 negative automatic P 111 34.3877 -2.78568 0.849224
IU.TATO.BHZ.00 2017-08-31T17:13:32.07 10.0 positive automatic P 37 33.5326 1.27948 0.708432
AU.MTN.BHZ. 2017-08-31T17:13:25.17 10.0 negative automatic P 112 33.1891 -2.62807 0.873894
GE.FAKI.BHZ. 2017-08-31T17:13:21.82 10.0 positive automatic P 94 32.4969 0.0652419 0.877974
AU.MORW.BHZ. 2017-08-31T17:13:17.87 10.0 positive automatic P 152 31.9399 0.965131 0.889517
IU.MBWA.BHZ.00 2017-08-31T17:12:41.25 10.0 negative automatic P 137 27.9169 -0.0828257 0.97561
IN.SHL.HHZ. 2017-08-31T17:12:39.62 10.0 positive automatic P 345 27.7851 -0.501938 0.966184
GE.TNTI.BHZ. 2017-08-31T17:12:37.67 10.0 positive automatic P 86 27.6535 -1.28358 0.615385
AU.GIRL.BHZ. 2017-08-31T17:12:23.22 10.0 negative automatic P 148 25.6831 1.96631 0.963855
GE.SOEI.BHZ. 2017-08-31T17:12:18.92 10.0 positive automatic P 110 25.8312 -3.83104 0.97561
GE.LUWI.BHZ. 2017-08-31T17:11:57.42 10.0 positive automatic P 90 22.9897 0.771252 0.888889
RM.SLV.BHZ. 2017-08-31T17:11:52.12 10.0 positive automatic P 10 22.8266 -2.94104 0.727273
GE.HALK.BHZ. 2017-08-31T17:11:31.70 10.0 positive automatic P 291 20.3897 2.7078 0.909091
II.KAPI.BHZ.00 2017-08-31T17:11:28.12 10.0 positive automatic P 101 20.3132 -0.0781994 0.816327
MY.LDM.BHZ. 2017-08-31T17:11:25.02 10.0 positive automatic P 71 19.7381 3.07676 0.952381
MY.KKM.BHZ. 2017-08-31T17:11:03.92 10.0 positive automatic P 66 17.9156 1.79515 0.952381
GE.BKB.BHZ. 2017-08-31T17:10:55.37 10.0 positive automatic P 90 17.1238 2.71135 0.43956
RM.DLV.BHZ. 2017-08-31T17:10:36.07 10.0 positive automatic P 33 15.6909 1.0685 0.8
GE.JAGI.BHZ. 2017-08-31T17:10:36.92 10.0 positive automatic P 118 16.0802 -2.80211 0.930233
IN.PBA.HHZ. 2017-08-31T17:10:21.25 10.0 negative automatic P 332 14.5814 0.649216 0.980392
MY.SBM.BHZ. 2017-08-31T17:10:01.17 10.0 positive automatic P 74 12.943 2.10429 0.930233
GE.SMRI.BHZ. 2017-08-31T17:09:48.62 10.0 positive automatic P 119 12.1617 0.155892 0.930233
MY.KSM.BHZ. 2017-08-31T17:09:32.52 10.0 positive automatic P 76 10.8499 1.951 0.952381
GE.LHMI.BHZ. 2017-08-31T17:08:35.72 10.0 positive automatic P 336 6.9699 -1.87918 0.43956
GE.PMBI.BHZ. 2017-08-31T17:08:14.17 10.0 positive automatic P 110 5.2242 0.415863 0.888889
MY.KOM.BHZ. 2017-08-31T17:08:11.47 10.0 negative automatic P 54 5.0169 0.542131 0.909091
GE.MNAI.BHZ. 2017-08-31T17:08:02.27 10.0 positive automatic P 135 4.5201 -1.88965 0.930233
GE.GSI.BHZ. 2017-08-31T17:07:45.02 10.0 positive automatic P 318 3.2909 -2.38019 0.97561
GE.BKNI.BHZ. 2017-08-31T17:07:29.42 10.0 negative automatic P 41 1.9368 0.339217 0.930233
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