Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 5.6 on date 02-04-2023 and time 08:40:56 (UTC) in region Indonesia [Sea]

A magnitude Mwp 5.6 earthquake occured in region: Indonesia [Sea], on

  • 02-04-2023 08:40:56 (UTC)
  • 02-04-2023 10:40:56 (UTC +02:00) Italian time
  • 02-04-2023 16:40:56 (UTC +08:00) local time in the region of the earthquake (Asia/Makassar)

and geographic coordinates (lat, lon) -7.8260, 118.7510 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.

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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 5.3
Mwp 5.6
Mwpd 5.9 		2023-04-02
08:40:56		 -7.8258 118.751 20 2023-04-02
08:53:19		 Sala Sismica INGV-Roma 115965521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-02 08:40:56
Latitude -7.8258
Longitude 118.7510
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 115965521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 7212
Semi-minor axis of confidence ellipse (meter) 6611
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 20
Circular confidence region, given by single value of horizontal uncertainty (meter) 5847.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65.7786
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.74801
Epicentral distance of station closest to the epicenter (degree) 2.98217
Epicentral distance of station farthest from the epicenter (degree) 63.64630
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 39
Magnitudes information

Mwp:5.6

Field Value
Value 5.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude Mwp
Reference to an origin 115965521
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-02 08:53:19

Mwpd:5.9

Field Value
Value 5.9
Uncertainty 0.2
Num. used stations 5
Type of magnitude Mwpd
Reference to an origin 115965521
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-02 08:53:19

mb:5.4

Field Value
Value 5.4
Uncertainty 0.2
Num. used stations 25
Type of magnitude mb
Reference to an origin 115965521
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-02 08:53:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.MAKZ.BHZ.00 2023-04-02T08:51:23.42 10.0 positive automatic P 333 63.6463 -2.24714 0.35247
NZ.URZ.HHZ.10 2023-04-02T08:51:04.76 10.0 negative automatic P 130 60.4998 0.306588 0
IU.SNZO.BHZ.00 2023-04-02T08:50:58.02 10.0 positive automatic P 134 59.5654 -0.0303128 0.427806
NZ.KHZ.HHZ.10 2023-04-02T08:50:55.67 10.0 negative automatic P 135 59.0960 0.878534 0.414544
NZ.OUZ.HHZ.10 2023-04-02T08:50:42.63 10.0 negative automatic P 127 57.0049 2.4898 0.471048
IU.ULN.BHZ.00 2023-04-02T08:50:35.37 10.0 positive automatic P 351 56.6405 -2.45346 0.45013
ND.MARNC.BHZ.00 2023-04-02T08:49:45.10 10.0 positive automatic P 112 49.3611 1.23066 0.551417
ND.ONTNC.BHZ.00 2023-04-02T08:49:34.75 10.0 positive automatic P 113 48.0472 0.967176 0.614806
IU.MAJO.BHZ.00 2023-04-02T08:49:29.72 10.0 negative automatic P 21 47.9782 -3.57908 0.561269
IO.EVN.BHZ. 2023-04-02T08:49:27.50 10.0 positive automatic P 320 47.2520 -0.955798 0.613987
ND.KOUNC.BHZ.00 2023-04-02T08:49:16.55 10.0 positive automatic P 111 45.7647 0.607964 0.625371
JP.JMN.BHZ. 2023-04-02T08:48:59.65 10.0 negative automatic P 18 43.9643 -2.03096 0.672801
IU.HNR.BHZ.00 2023-04-02T08:48:34.02 10.0 positive automatic P 95 40.7379 -1.31337 0.699805
AU.RIV.BHZ. 2023-04-02T08:48:27.62 10.0 positive automatic P 136 39.5908 1.80803 0.566402
G.CAN.BHZ.00 2023-04-02T08:48:21.95 10.0 positive automatic P 139 39.0088 0.882491 0.631258
AU.ARMA.BHZ. 2023-04-02T08:48:16.10 10.0 positive automatic P 131 38.1463 2.20013 0.792904
AU.TOO.BHZ.00 2023-04-02T08:48:16.80 10.0 positive automatic P 145 38.3455 1.31904 0.779536
AU.EIDS.BHZ. 2023-04-02T08:47:51.15 10.0 positive automatic P 124 35.4390 0.458001 0.818347
AU.QLP.BHZ. 2023-04-02T08:47:09.52 10.0 positive automatic P 131 30.6050 1.0279 0.857752
IU.CTAO.BHZ.00 2023-04-02T08:46:57.80 10.0 positive automatic P 118 29.3033 0.793597 0.952381
IU.MBWA.BHZ.00 2023-04-02T08:46:23.55 10.0 positive automatic S 176 13.3662 -8.32334 0
IU.NWAO.BHZ.00 2023-04-02T08:46:18.70 10.0 positive automatic P 183 25.1399 -0.923931 0.963855
AU.FORT.BHZ.00 2023-04-02T08:46:13.50 10.0 positive automatic P 160 24.5465 -0.682014 0.930233
MY.KUM.BHZ. 2023-04-02T08:45:51.47 10.0 positive automatic P 305 22.3171 -0.663079 0.97561
AU.MORW.BHZ. 2023-04-02T08:45:42.17 10.0 positive automatic P 187 21.3939 -0.122614 0.97561
AU.WRKA.BHZ.00 2023-04-02T08:45:22.15 10.0 positive automatic P 153 19.4735 0.636542 0.888889
GE.MNAI.BHZ. 2023-04-02T08:44:45.82 10.0 negative automatic P 282 16.0799 5.05734 0.615385
AU.GIRL.BHZ.00 2023-04-02T08:44:30.23 10.0 negative automatic P 196 15.4399 -2.23465 0.963855
GE.FAKI.BHZ. 2023-04-02T08:44:17.77 10.0 positive automatic P 71 14.3017 0.574917 0.869565
AU.KDU.BHZ.00 2023-04-02T08:44:14.25 10.0 positive automatic P 111 14.3453 -3.52289 0.869565
IU.MBWA.BHZ.00 2023-04-02T08:44:03.12 10.0 positive automatic P 176 13.3662 -1.31925 0.909091
AU.MTN.BHZ.00 2023-04-02T08:44:00.05 10.0 positive automatic P 113 13.1688 -1.78553 0.930233
GE.SANI.BHZ. 2023-04-02T08:43:09.17 10.0 negative automatic P 52 9.2359 1.2716 0.888889
GE.SMRI.BHZ. 2023-04-02T08:42:56.22 10.0 positive automatic P 275 8.2762 1.45669 0.952381
GE.LUWI.BHZ. 2023-04-02T08:42:50.02 10.0 negative automatic P 31 7.8784 0.740748 0.769231
GE.BKB.BHZ. 2023-04-02T08:42:37.37 10.0 negative automatic P 345 6.9654 0.611743 0
GE.SOEI.BHZ. 2023-04-02T08:42:22.27 10.0 positive automatic P 110 5.7824 1.58728 0.952381
GE.JAGI.BHZ. 2023-04-02T08:42:03.37 10.0 negative automatic P 262 4.5974 -0.877558 0.97561
GE.MMRI.BHZ. 2023-04-02T08:41:50.32 10.0 positive automatic P 103 3.5445 0.553769 0.909091
II.KAPI.BHZ.00 2023-04-02T08:41:41.25 10.0 negative automatic P 20 2.9822 -0.815617 0.952381
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