Earthquake with magnitude of Mwp 6.1 on date 02-08-2021 and time 07:01:23 (Italy) in region Indonesia [Sea]

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

  • 02-08-2021 05:01:23 (UTC)
  • 02-08-2021 07:01:23 (UTC +02:00) Italian time
  • 02-08-2021 14:01:23 (UTC +09:00) local time in the region of the earthquake (Asia/Jayapura)

and geographic coordinates (lat, lon) -4.665, 133.907 at 10 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 5.3
Mwp 6.1

Mwpd 6.3
2021-08-02
05:01:23
-4.6652 133.907 10 2021-08-02
05:14:51
Sala Sismica INGV-Roma 93545941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-02 05:01:23
Latitude -4.6652
Longitude 133.9070
Depth (km) 10 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 93545941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 25117
Semi-minor axis of confidence ellipse (meter) 6987
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
Circular confidence region, given by single value of horizontal uncertainty (meter) 20276.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71.2559
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.82484
Epicentral distance of station closest to the epicenter (degree) 2.40496
Epicentral distance of station farthest from the epicenter (degree) 57.56966
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 19
Type of magnitude Mwp
Reference to an origin 93545941
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-08-02 05:14:51

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 7
Type of magnitude Mwpd
Reference to an origin 93545941
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-08-02 05:14:51

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 25
Type of magnitude mb
Reference to an origin 93545941
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-08-02 05:14:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.ULN.BHZ.00 2021-08-02T05:11:10.17 10.0 positive automatic P 339 57.5697 -2.50733 0
IN.SHL.HHZ. 2021-08-02T05:10:27.12 10.0 positive automatic P 309 50.7612 4.37082 0
JP.JTM.BHZ. 2021-08-02T05:09:48.35 10.0 positive automatic P 8 45.9236 2.90088 0
IU.CHTO.BHZ.00 2021-08-02T05:09:13.65 10.0 negative automatic P 305 41.6721 2.33945 0.715301
JP.JGF.BHZ. 2021-08-02T05:09:00.45 10.0 positive automatic P 4 40.3973 -0.379341 0.675245
RM.SLV.BHZ. 2021-08-02T05:08:55.47 10.0 positive automatic P 313 39.2404 4.25022 0.69566
JP.JMN.BHZ. 2021-08-02T05:08:47.75 10.0 positive automatic P 360 38.395 3.63582 0.778463
IU.NWAO.BHZ.00 2021-08-02T05:07:51.52 10.0 positive automatic P 207 32.2582 0.233309 0.862846
AU.MORW.BHZ. 2021-08-02T05:07:29.00 10.0 negative automatic P 213 29.6962 1.31909 0.888889
AU.HTT.BHZ. 2021-08-02T05:07:24.37 10.0 positive automatic P 171 29.1409 0.54506 0.963855
AU.GIRL.BHZ.00 2021-08-02T05:07:02.10 10.0 positive automatic P 225 26.1693 4.99231 0.909091
AU.EIDS.BHZ. 2021-08-02T05:07:02.12 10.0 negative automatic P 143 26.4568 2.39761 0.869565
AU.FORT.BHZ.00 2021-08-02T05:07:01.38 10.0 positive automatic P 191 26.6867 -0.411346 0.963855
AU.QLP.BHZ. 2021-08-02T05:06:36.40 10.0 positive automatic P 157 24.0372 -1.3405 0.952381
MY.SBM.BHZ. 2021-08-02T05:06:27.37 10.0 positive automatic P 288 22.8125 1.84068 0.615385
IU.GUMO.BHZ.00 2021-08-02T05:06:12.42 10.0 positive automatic P 31 21.2506 3.59345 0
AU.WRKA.BHZ.00 2021-08-02T05:06:06.63 10.0 negative automatic P 194 21.0719 -0.353407 0.952381
IU.CTAO.BHZ.00 2021-08-02T05:05:50.55 10.0 negative automatic P 143 19.5516 0.135567 0.941176
MY.LDM.BHZ. 2021-08-02T05:05:36.37 10.0 positive automatic P 302 18.2672 0.238636 0.8
AU.FITZ.BHZ. 2021-08-02T05:05:00.68 10.0 positive automatic P 210 15.6803 -4.21023 0.97561
II.WRAB.BHZ.00 2021-08-02T05:04:53.92 10.0 positive automatic P 178 15.274 -4.34563 0.952381
GE.MMRI.BHZ. 2021-08-02T05:04:18.57 10.0 negative automatic P 250 12.2487 1.52033 0
GE.LUWI.BHZ. 2021-08-02T05:04:07.27 10.0 negative automatic P 288 11.6942 -2.17118 0.869565
GE.SOEI.BHZ. 2021-08-02T05:03:58.17 10.0 positive automatic P 241 10.8299 0.37104 0.930233
AU.MTN.BHZ.00 2021-08-02T05:03:27.80 10.0 positive automatic P 198 8.6245 0.383756 0.952381
AU.KDU.BHZ.00 2021-08-02T05:03:20.85 10.0 positive automatic P 190 8.1454 0.0236376 0.879121
GE.SANI.BHZ. 2021-08-02T05:03:19.57 10.0 positive automatic P 288 8.3254 -3.73031 0.909091
GE.GENI.BHZ. 2021-08-02T05:02:55.87 10.0 positive automatic P 72 6.5827 -3.50744 0.816327
GE.SAUI.BHZ. 2021-08-02T05:02:29.47 10.0 positive automatic P 218 4.2095 2.68649 0.909091
GE.BNDI.BHZ. 2021-08-02T05:02:23.52 10.0 negative automatic P 272 3.9917 -0.252314 0.909091
GE.FAKI.BHZ. 2021-08-02T05:01:57.67 10.0 positive automatic P 316 2.405 -4.30507 0.930233
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