Earthquake with magnitude of Md 4.2 on date 09-08-1991 and time 00:46:13 (Italy) in region Canale di Sicilia meridionale (MARE)

A magnitude Md 4.2 earthquake occured in region: Canale di Sicilia meridionale (MARE), on

  • 08-08-1991 22:46:13 (UTC)
  • 09-08-1991 00:46:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 35.72, 11.87 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
Bulletin
Rev1000
Md 4.2
ML-VAX 4.3
1991-08-08
22:46:13
35.72 11.87 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 147179
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-08-08 22:46:13 ± 0.776
Latitude 35.72 ± 0.06
Longitude 11.87 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 147179

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) 6975.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 278
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 58
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00979
Epicentral distance of station farthest from the epicenter (degree) 0.09795
Number of stations at which the event was observed 50
Number of stations from which data was used for origin computation 50
Magnitudes information

Md:4.2

Field Value
Value 4.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 147179
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:17:22

ML:4.3

Field Value
Value 4.3
Uncertainty
Num. used stations 23
Type of magnitude ML
Reference to an origin 147179
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
--.FVI.Z. 1991-08-08T22:48:50.00 10.0 undecidable manual PN 3 0.0979 0.83 0.8
--.BNI.Z. 1991-08-08T22:48:39.59 10.0 undecidable manual PN 338 0.0911 0.84 0.8
--.DOI.Z. 1991-08-08T22:48:28.27 10.0 undecidable manual PN 339 0.0852 -1.34 0.5
--.CKI.Z. 1991-08-08T22:48:23.36 10.0 undecidable manual PN 343 0.082 -1.51 0.4
--.BDI.Z. 1991-08-08T22:48:16.35 10.0 undecidable manual PN 353 0.0755 1.42 0.4
--.SFI.Z. 1991-08-08T22:48:13.00 10.0 undecidable manual PN 359 0.0736 1.02 0.7
--.PGD.Z. 1991-08-08T22:48:12.00 10.0 undecidable manual PN 359 0.0733 0.41 1.2
--.PII.Z. 1991-08-08T22:48:10.00 10.0 undecidable manual PN 353 0.0725 -0.38 1.2
--.CRE.Z. 1991-08-08T22:48:08.50 10.0 undecidable manual PN 0 0.071 0.43 1.2
--.ARV.Z. 1991-08-08T22:48:06.00 10.0 undecidable manual PN 5 0.0703 -1.02 0.8
--.ASS.Z. 1991-08-08T22:48:00.00 10.0 undecidable manual PN 4 0.0662 -0.77 1
--.SOI.Z. 1991-08-08T22:47:59.20 10.0 undecidable manual SN! 53 0.0367 -2.33 0
--.MO9.Z. 1991-08-08T22:47:54.31 10.0 undecidable manual SN 52 0.0343 -0.52 0.6
--.FG3.Z. 1991-08-08T22:47:53.55 10.0 undecidable manual PN 26 0.061 0.81 1
--.LCI.Z. 1991-08-08T22:47:52.30 10.0 undecidable manual PN 44 0.0606 -0.18 1.4
--.ATN.Z. 1991-08-08T22:47:52.37 10.0 undecidable manual SN 48 0.0338 -1.27 0.3
--.MAO.Z. 1991-08-08T22:47:51.74 10.0 undecidable manual PN 355 0.0604 -0.14 1.5
--.BRT.Z. 1991-08-08T22:47:51.00 10.0 undecidable manual PN 37 0.0594 0.59 1.2
--.DUI.Z. 1991-08-08T22:47:44.36 10.0 undecidable manual PN 18 0.0563 -1.4 0.5
--.CP9.Z. 1991-08-08T22:47:44.73 10.0 undecidable manual PN 7 0.0557 -0.02 1.5
--.RMP.Z. 1991-08-08T22:47:44.90 10.0 undecidable manual PN 5 0.055 0.36 1.4
--.SDI.Z. 1991-08-08T22:47:44.50 10.0 undecidable manual PN 13 0.0555 0.05 1.5
--.RDP.Z. 1991-08-08T22:47:43.00 10.0 undecidable manual PN 6 0.0546 -0.03 1.6
--.SGG.Z. 1991-08-08T22:47:42.90 10.0 undecidable manual PN 18 0.0539 0.93 1
--.GIO.Z. 1991-08-08T22:47:40.59 10.0 undecidable manual SN 53 0.0287 0.71 0.5
--.RFI.Z. 1991-08-08T22:47:40.35 10.0 undecidable manual PN 15 0.0523 0.8 1.1
--.MSC.Z. 1991-08-08T22:47:39.70 10.0 undecidable manual PN 16 0.0513 1.63 0.4
--.PF9.Z. 1991-08-08T22:47:38.71 10.0 undecidable manual PN 31 0.051 1.15 0.8
--.ORI.Z. 1991-08-08T22:47:38.63 10.0 undecidable manual PN 38 0.0507 1.58 0.4
--.AU9.Z. 1991-08-08T22:47:37.51 10.0 undecidable manual SN 59 0.0278 -0.3 0.6
--.SGO.Z. 1991-08-08T22:47:36.15 10.0 undecidable manual PN 28 0.0498 0.39 1.5
--.ROI.Z. 1991-08-08T22:47:34.88 10.0 undecidable manual PN 42 0.0481 1.72 0.3
--.CSI.Z. 1991-08-08T22:47:34.44 10.0 undecidable manual PN 39 0.0482 1.16 0.8
--.TDS.Z. 1991-08-08T22:47:33.59 10.0 undecidable manual PN 40 0.0476 1.26 0.7
--.OVO.Z. 1991-08-08T22:47:33.10 10.0 undecidable manual PN 20 0.0492 -1.76 0.3
--.GIB.Z. 1991-08-08T22:47:32.00 10.0 undecidable manual SN 36 0.0256 0.13 0.7
--.MMN.Z. 1991-08-08T22:47:32.40 10.0 positive manual PN 36 0.0475 0.11 3.3
--.MGR.Z. 1991-08-08T22:47:31.61 10.0 undecidable manual PN 32 0.0475 -0.64 1.3
--.SOR.Z. 1991-08-08T22:47:30.60 10.0 undecidable manual PN 21 0.047 -0.91 1.1
--.PZI.Z. 1991-08-08T22:47:30.10 10.0 undecidable manual SN 60 0.0253 -0.91 0.4
--.GRI.Z. 1991-08-08T22:47:25.63 10.0 undecidable manual PN 48 0.0428 0.51 1.5
--.CZI.Z. 1991-08-08T22:47:25.52 10.0 undecidable manual PN 42 0.0437 -0.96 1
--.SOI.Z. 1991-08-08T22:47:15.43 10.0 undecidable manual PN 53 0.0367 -0.41 1.5
--.GMB.Z. 1991-08-08T22:47:15.70 10.0 undecidable manual PN 51 0.0359 0.48 1.5
--.MO9.Z. 1991-08-08T22:47:12.24 10.0 undecidable manual PN 52 0.0343 0.16 1.7
--.ATN.Z. 1991-08-08T22:47:12.40 10.0 undecidable manual PN 48 0.0338 1.01 1
--.SA1.Z. 1991-08-08T22:47:09.90 10.0 undecidable manual PN 38 0.0332 -1.31 0.7
--.MNO.Z. 1991-08-08T22:47:04.00 10.0 undecidable manual PN 44 0.0284 0.88 1.1
--.GIO.Z. 1991-08-08T22:47:03.48 10.0 undecidable manual PN 53 0.0287 0.03 1.7
--.USI.Z. 1991-08-08T22:47:01.15 10.0 undecidable manual PN 18 0.0284 -1.99 0.2
--.AU9.Z. 1991-08-08T22:47:00.92 10.0 undecidable manual PN 59 0.0278 -1.33 0.7
--.GIB.Z. 1991-08-08T22:46:58.36 10.0 undecidable manual PN 36 0.0256 -0.46 1.5
--.PZI.Z. 1991-08-08T22:46:57.15 10.0 undecidable manual PN 60 0.0253 -1.17 0.8
--.MEU.Z. 1991-08-08T22:46:56.71 10.0 undecidable manual PN 58 0.0248 -0.85 1.1
--.MCT.Z. 1991-08-08T22:46:52.63 10.0 undecidable manual PN 35 0.0211 0.6 1.4
--.PTS.Z. 1991-08-08T22:46:49.90 10.0 undecidable manual SN 5 0.0098 -0.24 0.7
--.CVT.Z. 1991-08-08T22:46:46.68 10.0 undecidable manual PN 20 0.0188 -1.73 0.3
--.PTS.Z. 1991-08-08T22:46:34.64 10.0 undecidable manual PN 5 0.0098 -0.09 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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