Earthquake with magnitude of Md 2.7 on date 11-08-1985 and time 20:29:32 (Italy) in region 9 km SE Troina (EN)

A magnitude Md 2.7 earthquake occured in region: 9 km SE Troina (EN), on

  • 11-08-1985 18:29:32 (UTC)
  • 11-08-1985 20:29:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.73, 14.68 at 8 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
Troina EN 9 9373 9373
Regalbuto EN 10 7277 16650
CesarĂ² ME 13 2439 19089
San Teodoro ME 13 1403 20492
Gagliano Castelferrato EN 13 3593 24085
Centuripe EN 14 5470 29555
Bronte CT 15 19172 48727
Adrano CT 16 36122 84849
Agira EN 16 8345 93194
Cerami EN 18 2006 95200
Maniace CT 18 3765 98965
Catenanuova EN 18 4866 103831
Biancavilla CT 20 24007 127838
Maletto CT 20 3920 131758

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km NW of Catania (314555 inhabitants)
45 Km W of Acireale (52622 inhabitants)
61 Km E of Caltanissetta (63360 inhabitants)
83 Km NE of Gela (75827 inhabitants)
88 Km N of Vittoria (63339 inhabitants)
90 Km N of Ragusa (73313 inhabitants)
92 Km SW of Messina (238439 inhabitants)
92 Km NW of Siracusa (122291 inhabitants)
94 Km W of Reggio di Calabria (183035 inhabitants)
98 Km N of Modica (54633 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 2.7 1985-08-11
18:29:32
37.73 14.68 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 11519
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-11 18:29:32 ± 0.434
Latitude 37.73 ± 0.01
Longitude 14.68 ± 0.01
Depth (km) 8 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 11519

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) 1414.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00648
Epicentral distance of station farthest from the epicenter (degree) 0.01506
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 11519
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ERC.Z. 1985-08-11T18:30:23.00 10.0 undecidable manual SN 281 0.0151 0.05 0.6
--.FA1.Z. 1985-08-11T18:30:04.00 10.0 undecidable manual SG 240 0.0083 -0.04 0.8
--.ERC.Z. 1985-08-11T18:30:01.00 10.0 undecidable manual PN 281 0.0151 -0.47 0.6
--.PA1.Z. 1985-08-11T18:29:58.00 10.0 undecidable manual SG 165 0.0065 0.34 0.5
--.FA1.Z. 1985-08-11T18:29:51.00 10.0 undecidable manual PG 240 0.0083 0.45 0.8
--.MSI.Z. 1985-08-11T18:29:49.00 10.0 undecidable manual PG 55 0.0074 0.15 1.7
--.RCI.Z. 1985-08-11T18:29:49.00 10.0 undecidable manual PG 63 0.0075 -0.05 2.1
--.PA1.Z. 1985-08-11T18:29:46.50 10.0 undecidable manual PG 165 0.0065 -0.37 1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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