Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 5.5 on date 28-04-2023 and time 20:12:53 (Italy) in region Indonesia [Sea]

A magnitude Mwp 5.5 earthquake occured in region: Indonesia [Sea], on

  • 28-04-2023 18:12:53 (UTC)
  • 28-04-2023 20:12:53 (UTC +02:00) Italian time
  • 29-04-2023 03:12:53 (UTC +09:00) local time in the region of the earthquake (Asia/Jayapura)

and geographic coordinates (lat, lon) -4.8200, 133.8710 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.

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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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		mb 5.2
Mwp 5.5
Mwpd 5.8 		2023-04-28
18:12:53		 -4.8199 133.871 10 2023-04-28
18:24:54		 Sala Sismica INGV-Roma 116848241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-28 18:12:53
Latitude -4.8199
Longitude 133.8710
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 116848241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 8622
Semi-minor axis of confidence ellipse (meter) 984
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 39
Circular confidence region, given by single value of horizontal uncertainty (meter) 6961.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142.075
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.74517
Epicentral distance of station closest to the epicenter (degree) 2.49652
Epicentral distance of station farthest from the epicenter (degree) 41.73316
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

Mwpd:5.8

Field Value
Value 5.8
Uncertainty 0.0
Num. used stations 1
Type of magnitude Mwpd
Reference to an origin 116848241
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-28 18:24:54

Mwp:5.5

Field Value
Value 5.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude Mwp
Reference to an origin 116848241
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-28 18:24:54

mb:5.2

Field Value
Value 5.2
Uncertainty 0.2
Num. used stations 17
Type of magnitude mb
Reference to an origin 116848241
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-28 18:24:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IU.CHTO.BHZ.00 2023-04-28T18:20:41.37 10.0 positive automatic P 306 4632.3852 -0.529659 0.731568
MY.KOM.BHZ. 2023-04-28T18:19:08.57 10.0 positive automatic P 282 3409.476 0.826643 0.855463
AU.ARMA.BHZ. 2023-04-28T18:19:07.30 10.0 negative automatic P 149 3394.4466 0.562221 0.907454
AU.FORT.BHZ.00 2023-04-28T18:18:31.23 10.0 positive automatic P 191 2944.6302 0.772436 0.952381
IU.HNR.BHZ.00 2023-04-28T18:18:29.17 10.0 positive automatic P 102 2916.1365 1.04826 0.91954
AU.QLP.BHZ. 2023-04-28T18:18:07.20 10.0 negative automatic P 157 2653.8879 0.537111 0.952381
IU.MBWA.BHZ.00 2023-04-28T18:17:39.72 10.0 positive automatic P 219 2368.296 -0.12051 0.952381
AU.WRKA.BHZ.00 2023-04-28T18:17:34.48 10.0 negative automatic P 194 2321.3763 -0.884229 0.963855
GE.SOEI.BHZ. 2023-04-28T18:17:29.07 10.0 negative automatic S 242 1190.5638 2.96297 0
GE.JAGI.BHZ. 2023-04-28T18:17:25.27 10.0 negative automatic P 258 2210.9646 0.789273 0.888889
IU.CTAO.BHZ.00 2023-04-28T18:17:20.77 10.0 positive automatic P 143 2158.8612 1.38328 0.909091
AU.FITZ.BHZ. 2023-04-28T18:16:28.00 10.0 negative automatic P 211 1723.7412 -3.65728 0.952381
AU.KDU.BHZ.00 2023-04-28T18:16:16.05 10.0 negative automatic S 190 886.557 -2.50032 0
GE.PMG.BHZ.00 2023-04-28T18:16:09.42 10.0 negative automatic P 110 1548.6498 -0.969187 0.97561
GE.MMRI.BHZ. 2023-04-28T18:15:50.47 10.0 positive automatic P 251 1350.2817 4.47754 0.909091
GE.LUWI.BHZ. 2023-04-28T18:15:38.47 10.0 positive automatic P 288 1299.699 -1.2663 0.769231
GE.SOEI.BHZ. 2023-04-28T18:15:26.37 10.0 positive automatic P 242 1190.5638 -0.0961654 0.930233
GE.TNTI.BHZ. 2023-04-28T18:14:56.07 10.0 positive automatic P 311 951.5364 -0.710193 0.615385
AU.MTN.BHZ.00 2023-04-28T18:14:54.45 10.0 positive automatic P 198 939.8037 -0.896874 0.869565
GE.SANI.BHZ. 2023-04-28T18:14:51.32 10.0 positive automatic P 289 925.9065 -2.29405 0.43956
AU.KDU.BHZ.00 2023-04-28T18:14:48.33 10.0 negative automatic P 190 886.557 -0.424144 0.97561
GE.BNDI.BHZ. 2023-04-28T18:13:54.67 10.0 positive automatic P 274 440.0928 1.17515 0.97561
GE.FAKI.BHZ. 2023-04-28T18:13:32.12 10.0 positive automatic P 320 277.1115 -1.20262 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