Earthquake with magnitude of Md 4.0 on date 09-08-1985 and time 21:49:50 (UTC) in region Costa Siciliana centro settentrionale (Palermo)

A magnitude Md 4.0 earthquake occured in region: Costa Siciliana centro settentrionale (Palermo), on

  • 09-08-1985 21:49:50 (UTC)
  • 09-08-1985 23:49:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.32, 13.04 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Terrasini PA 19 12320 12320
Cinisi PA 20 12418 24738

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NW of Palermo (674435 inhabitants)
49 Km NW of Bagheria (55387 inhabitants)
57 Km NE of Trapani (68759 inhabitants)
79 Km NE of Marsala (83194 inhabitants)
84 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 4.0 1985-08-09
21:49:50
38.32 13.04 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 11419
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-09 21:49:50 ± 1.919
Latitude 38.32 ± 0.02
Longitude 13.04 ± 0.02
Depth (km) 9 ± 13 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 11419

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) 3325.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
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) 0.00405
Epicentral distance of station farthest from the epicenter (degree) 0.07407
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitude information

Md:4

Field Value
Value 4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 11419
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BN9.Z. 1985-08-09T21:51:51.00 10.0 undecidable manual PN 326 0.0741 1.47 0.3
--.VAI.Z. 1985-08-09T21:51:50.00 10.0 undecidable manual PN 338 0.0736 1.23 0.4
--.MDI.Z. 1985-08-09T21:51:45.60 10.0 undecidable manual PN 342 0.0706 1.33 0.4
--.CTI.Z. 1985-08-09T21:51:43.50 10.0 undecidable manual PN 352 0.0701 0.04 0.9
--.SDA.Z. 1985-08-09T21:51:21.50 10.0 undecidable manual PN 50 0.0554 0.38 1
--.TIR.Z. 1985-08-09T21:51:20.50 10.0 undecidable manual PN 57 0.0544 0.95 0.6
--.SRN.Z. 1985-08-09T21:51:15.30 10.0 undecidable manual PN 71 0.0505 1.64 0.2
--.PS9.Z. 1985-08-09T21:51:14.80 10.0 undecidable manual PN 341 0.0514 -0.25 1
--.PE1.Z. 1985-08-09T21:50:55.00 10.0 undecidable manual PN 51 0.0377 0.93 0.8
--.BRT.Z. 1985-08-09T21:50:52.00 10.0 undecidable manual PN 49 0.0365 -0.33 1.3
--.BAI.Z. 1985-08-09T21:50:51.50 10.0 undecidable manual PN 45 0.0365 -0.73 1
--.DUI.Z. 1985-08-09T21:50:46.00 10.0 undecidable manual PN 17 0.0316 1.31 0.6
--.RDP.Z. 1985-08-09T21:50:42.50 10.0 undecidable manual PN 355 0.0309 -1.3 0.4
--.TR9.Z. 1985-08-09T21:50:40.50 10.0 undecidable manual PN 30 0.0288 0.01 1.4
--.SGG.Z. 1985-08-09T21:50:40.00 10.0 undecidable manual PN 17 0.0291 -0.89 0.8
--.ORI.Z. 1985-08-09T21:50:40.00 10.0 undecidable manual PN 55 0.0283 0.19 1.4
--.ROI.Z. 1985-08-09T21:50:38.20 10.0 undecidable manual PN 64 0.0271 0.3 1.3
--.SE2.Z. 1985-08-09T21:50:37.60 10.0 undecidable manual PN 75 0.0266 0.52 1.1
--.MSC.Z. 1985-08-09T21:50:36.00 10.0 undecidable manual PN 13 0.0266 -1.11 0.5
--.SGO.Z. 1985-08-09T21:50:35.50 10.0 undecidable manual PN 37 0.0255 -0.03 1.4
--.BSS.Z. 1985-08-09T21:50:34.00 10.0 negative manual PN 28 0.0253 -1.12 1.1
--.MMN.Z. 1985-08-09T21:50:33.60 10.0 undecidable manual PN 54 0.0249 -1.02 0.7
--.OVO.Z. 1985-08-09T21:50:33.10 10.0 undecidable manual PN 21 0.0244 -0.68 1
--.GA2.Z. 1985-08-09T21:50:26.80 10.0 undecidable manual PN 92 0.0198 0.13 1.4
--.RCI.Z. 1985-08-09T21:50:25.50 10.0 undecidable manual PN 94 0.0185 0.73 0.9
--.MSI.Z. 1985-08-09T21:50:24.00 10.0 undecidable manual PN 92 0.0177 0.3 1.3
--.PT9.Z. 1985-08-09T21:50:20.50 10.0 undecidable manual PN 208 0.0155 0.28 1.2
--.FAI.Z. 1985-08-09T21:50:11.00 10.0 negative manual PN 154 0.0104 -1.48 1.1
--.GIB.Z. 1985-08-09T21:50:07.00 10.0 undecidable manual PG 112 0.0075 -0.21 1.4
--.ERC.Z. 1985-08-09T21:50:00.00 10.0 negative manual PG 231 0.004 0 2.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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