Earthquake with magnitude of ML-VAX 4.5 on date 11-04-1989 and time 15:49:16 (Italy) in region Tunisia

A magnitude ML-VAX 4.5 earthquake occured in region: Tunisia, on

  • 11-04-1989 13:49:16 (UTC)
  • 11-04-1989 15:49:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 34.95, 9.13 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML-VAX 4.5 1989-04-11
13:49:16
34.95 9.13 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 89729
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-04-11 13:49:16 ± 1.043
Latitude 34.95 ± 0.08
Longitude 9.13 ± 0.05
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 89729

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 9938.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 258
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.03966
Epicentral distance of station farthest from the epicenter (degree) 0.11276
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitude information

ML:4.5

Field Value
Value 4.5
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 89729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.LPO.Z. 1989-04-11T13:54:01.00 10.0 undecidable manual SN 330 0.1033 1.34 0.4
--.CAF.Z. 1989-04-11T13:53:57.00 10.0 undecidable manual SN 333 0.1021 0.55 0.6
--.SBF.Z. 1989-04-11T13:52:59.20 10.0 undecidable manual SN 352 0.0809 -1.56 0.2
--.FRF.Z. 1989-04-11T13:52:55.40 10.0 undecidable manual SN 348 0.0793 -0.94 0.5
--.LRG.Z. 1989-04-11T13:52:54.00 10.0 undecidable manual SN 346 0.0788 -1.12 0.4
--.LMR.Z. 1989-04-11T13:52:50.00 10.0 undecidable manual SN 347 0.0775 -1.68 0.2
--.CVF.Z. 1989-04-11T13:52:26.40 10.0 undecidable manual SN 358 0.0685 -1.37 0.3
--.BGF.Z. 1989-04-11T13:52:14.00 10.0 undecidable manual PN 339 0.1128 -0.41 1.3
--.RJF.Z. 1989-04-11T13:52:04.20 10.0 undecidable manual PN 333 0.1068 -1.07 0.9
--.LPO.Z. 1989-04-11T13:51:59.20 10.0 undecidable manual PN 330 0.1033 -0.7 1.2
--.CAF.Z. 1989-04-11T13:51:57.60 10.0 undecidable manual PN 333 0.1021 -0.44 1.4
--.VAI.Z. 1989-04-11T13:51:53.00 10.0 undecidable manual PN 358 0.0982 0.89 1.3
--.LPG.Z. 1989-04-11T13:51:51.60 10.0 undecidable manual PN 351 0.0962 2.47 0.3
--.EPF.Z. 1989-04-11T13:51:48.80 10.0 undecidable manual PN 322 0.0951 1.33 1
--.BNI.Z. 1989-04-11T13:51:43.34 10.0 undecidable manual PN 350 0.0924 0.07 1.6
--.BOB.Z. 1989-04-11T13:51:39.70 10.0 undecidable manual PN 1 0.0882 2.05 0.5
--.DOI.Z. 1989-04-11T13:51:35.35 10.0 undecidable manual PN 352 0.0869 0.49 1.6
--.PGD.Z. 1989-04-11T13:51:30.00 10.0 undecidable manual PN 11 0.0822 2.21 0.4
--.ARV.Z. 1989-04-11T13:51:29.30 10.0 undecidable manual PN 17 0.0813 2.9 0.1
--.SFI.Z. 1989-04-11T13:51:29.00 10.0 undecidable manual PN 12 0.0826 0.52 1.6
--.CRE.Z. 1989-04-11T13:51:26.50 10.0 undecidable manual PN 13 0.0804 1.54 0.9
--.SBF.Z. 1989-04-11T13:51:24.90 10.0 undecidable manual PN 352 0.0809 -0.99 1.1
--.FRF.Z. 1989-04-11T13:51:22.50 10.0 undecidable manual PN 348 0.0793 -0.84 1.3
--.LRG.Z. 1989-04-11T13:51:21.50 10.0 undecidable manual PN 346 0.0788 -1.13 1
--.LMR.Z. 1989-04-11T13:51:20.00 10.0 undecidable manual PN 347 0.0775 -0.65 1.4
--.DUI.Z. 1989-04-11T13:51:11.50 10.0 undecidable manual PN 30 0.0711 0.73 1.5
--.CVF.Z. 1989-04-11T13:51:08.00 10.0 undecidable manual PN 358 0.0685 1.16 1.2
--.SDI.Z. 1989-04-11T13:51:07.00 10.0 undecidable manual PN 27 0.0691 -0.85 1.3
--.MAO.Z. 1989-04-11T13:51:07.85 10.0 undecidable manual PN 11 0.0686 0.84 1.5
--.TDS.Z. 1989-04-11T13:51:05.00 10.0 undecidable manual PN 48 0.0667 0.87 1.4
--.RMP.Z. 1989-04-11T13:51:03.96 10.0 undecidable manual PN 21 0.0666 -0.02 1.7
--.SOI.Z. 1989-04-11T13:50:48.50 10.0 undecidable manual PN 58 0.0574 -1.39 0.8
--.ATN.Z. 1989-04-11T13:50:44.50 10.0 undecidable manual PN 55 0.0541 -0.35 1.6
--.MEU.Z. 1989-04-11T13:50:31.80 10.0 undecidable manual PN 63 0.0457 -0.39 1.6
--.PZI.Z. 1989-04-11T13:50:31.60 10.0 undecidable manual PN 64 0.0463 -1.47 0.7
--.CGL.Z. 1989-04-11T13:50:21.99 10.0 undecidable manual PN 1 0.0397 -0.87 1.2
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