Earthquake with magnitude of Md 3.8 on date 09-08-1985 and time 00:32:10 (Italy) in region Tirreno Meridionale (MARE)

A magnitude Md 3.8 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 08-08-1985 22:32:10 (UTC)
  • 09-08-1985 00:32:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.44, 12.96 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

An earthquake occurred to
50 Km NW of Palermo (674435 inhabitants)
61 Km NE of Trapani (68759 inhabitants)
62 Km NW of Bagheria (55387 inhabitants)
84 Km NE of Marsala (83194 inhabitants)
93 Km NE of Mazara del Vallo (51718 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 Md 3.8 1985-08-08
22:32:10
38.44 12.97 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 11379
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-08 22:32:10 ± 0.229
Latitude 38.44 ± 0.02
Longitude 12.97 ± 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 11379

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) 3306.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00445
Epicentral distance of station farthest from the epicenter (degree) 0.0629
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitude information

Md:3.8

Field Value
Value 3.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 11379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ROB.Z. 1985-08-08T22:33:52.00 10.0 undecidable manual PN 328 0.0629 -0.82 0.6
--.SGO.Z. 1985-08-08T22:33:26.00 10.0 undecidable manual SN 39 0.025 -1.48 0.1
--.LCI.Z. 1985-08-08T22:33:17.00 10.0 undecidable manual PN 62 0.0396 -0.24 1.2
--.MA1.Z. 1985-08-08T22:33:14.20 10.0 undecidable manual PN 341 0.0379 -0.38 1.1
--.BRT.Z. 1985-08-08T22:33:13.50 10.0 undecidable manual PN 51 0.0363 1.3 0.4
--.RDP.Z. 1985-08-08T22:33:03.00 10.0 undecidable manual PN? 356 0.0299 0.56 0.5
--.SD1.Z. 1985-08-08T22:33:02.50 10.0 undecidable manual PN 10 0.03 -0.05 1.4
--.ORI.Z. 1985-08-08T22:33:01.00 10.0 undecidable manual PN 57 0.0283 1.13 0.6
--.SGG.Z. 1985-08-08T22:33:00.50 10.0 undecidable manual PN 19 0.0283 0.59 1.1
--.TR9.Z. 1985-08-08T22:32:59.90 10.0 undecidable manual PN 32 0.0282 0.06 1.5
--.ROI.Z. 1985-08-08T22:32:57.50 10.0 undecidable manual PN 66 0.0271 -0.72 1
--.MSC.Z. 1985-08-08T22:32:56.60 10.0 undecidable manual PN 15 0.0257 0.55 1.2
--.CSI.Z. 1985-08-08T22:32:56.50 10.0 undecidable manual PN 61 0.0261 -0.24 1.5
--.MMN.Z. 1985-08-08T22:32:54.20 10.0 undecidable manual PN 56 0.0248 -0.44 1.4
--.SGO.Z. 1985-08-08T22:32:54.00 10.0 undecidable manual PN 39 0.025 -1.04 0.7
--.BS1.Z. 1985-08-08T22:32:54.00 10.0 undecidable manual PN 30 0.0246 -0.4 1.4
--.OVO.Z. 1985-08-08T22:32:54.90 10.0 undecidable manual PN 24 0.0236 1.99 0.1
--.PA1.Z. 1985-08-08T22:32:46.50 10.0 undecidable manual PN 131 0.0187 1.11 0.7
--.RCI.Z. 1985-08-08T22:32:45.50 10.0 undecidable manual PN 97 0.0191 -0.47 1.3
--.MSI.Z. 1985-08-08T22:32:43.50 10.0 undecidable manual PN 95 0.0184 -1.34 0.5
--.PT9.Z. 1985-08-08T22:32:40.10 10.0 undecidable manual PN? 205 0.0162 -1.38 0.2
--.FA1.Z. 1985-08-08T22:32:35.00 10.0 negative manual PN 153 0.0116 0.52 2.6
--.ERC.Z. 1985-08-08T22:32:30.20 10.0 undecidable manual SG 216 0.0045 1.62 0.1
--.GIB.Z. 1985-08-08T22:32:29.00 10.0 undecidable manual PG 117 0.0085 -0.34 1.4
--.ERC.Z. 1985-08-08T22:32:20.50 10.0 negative manual PG 216 0.0045 -0.53 2.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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