ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 3.5 on date 06-08-1985 and time 09:26:48 (Italy) in region Mar Ionio Meridionale (MARE)

A magnitude Md 3.5 earthquake occured in region: Mar Ionio Meridionale (MARE), on

  • 06-08-1985 07:26:48 (UTC)
  • 06-08-1985 09:26:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.26, 15.87 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

An earthquake occurred to
56 Km E of Siracusa (122291 inhabitants)
74 Km SE of Acireale (52622 inhabitants)
75 Km E of Catania (314555 inhabitants)
97 Km S of Reggio di Calabria (183035 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 3.5 1985-08-06
07:26:48
37.26 15.87 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 11329
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-06 07:26:48 ± 1.163
Latitude 37.26 ± 0.05
Longitude 15.87 ± 0.05
Depth (km) 10 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 11329

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) 7232.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 224
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00712
Epicentral distance of station farthest from the epicenter (degree) 0.0425
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 11329
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.LCI.Z. 1985-08-06T07:28:22.00 10.0 undecidable manual SN 28 0.0318 -1.36 0.2
--.ERC.Z. 1985-08-06T07:28:03.50 10.0 undecidable manual SN 287 0.0244 -0.3 0.5
--.MMN.Z. 1985-08-06T07:28:02.00 10.0 undecidable manual SN 1 0.0236 0.11 0.5
--.SD1.Z. 1985-08-06T07:28:01.00 10.0 undecidable manual PN 340 0.0425 1.3 0.4
--.MS1.Z. 1985-08-06T07:27:54.00 10.0 undecidable manual PN 0 0.04 -1.88 0.2
--.BAI.Z. 1985-08-06T07:27:47.00 10.0 undecidable manual PN 10 0.0353 -1.74 0.2
--.BRT.Z. 1985-08-06T07:27:44.80 10.0 undecidable manual PN 14 0.0337 -1.5 0.4
--.LCI.Z. 1985-08-06T07:27:42.20 10.0 undecidable manual PN 28 0.0318 -1.19 0.5
--.SOR.Z. 1985-08-06T07:27:42.30 10.0 undecidable manual PN 340 0.0317 -1.02 0.7
--.SGO.Z. 1985-08-06T07:27:42.00 10.0 undecidable manual PN 351 0.03 1.45 0.4
--.MMN.Z. 1985-08-06T07:27:32.20 10.0 undecidable manual PN 1 0.0236 1.21 0.6
--.ERC.Z. 1985-08-06T07:27:32.00 10.0 undecidable manual PN 287 0.0244 -0.1 1.3
--.ROI.Z. 1985-08-06T07:27:28.60 10.0 undecidable manual PN 12 0.0214 1.13 0.7
--.SE2.Z. 1985-08-06T07:27:21.40 10.0 positive manual PN 20 0.0168 0.85 1.8
--.FA1.Z. 1985-08-06T07:27:19.80 10.0 negative manual PN 270 0.0157 0.9 1.7
--.GIB.Z. 1985-08-06T07:27:17.50 10.0 undecidable manual PN 296 0.0147 0.22 1.3
--.DR2.Z. 1985-08-06T07:27:13.80 10.0 undecidable manual PN 1 0.0125 -0.09 2.6
--.RI2.Z. 1985-08-06T07:27:12.80 10.0 undecidable manual PN 21 0.0113 0.69 2.1
--.MSI.Z. 1985-08-06T07:27:07.40 10.0 negative manual PG 344 0.0087 -0.62 2.2
--.RCI.Z. 1985-08-06T07:27:06.80 10.0 undecidable manual PG 347 0.0078 0.84 0.9
--.PA1.Z. 1985-08-06T07:27:03.80 10.0 negative manual PG 253 0.0071 -0.84 1.8
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