Earthquake with magnitude of Md 3.0 on date 17-04-1985 and time 02:06:05 (Italy) in region 11 km E Castel di Iudica (CT)

A magnitude Md 3.0 earthquake occured in region: 11 km E Castel di Iudica (CT), on

  • 17-04-1985 00:06:05 (UTC)
  • 17-04-1985 02:06:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.49, 14.78 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
Castel di Iudica CT 11 4625 4625
Catenanuova EN 12 4866 9491
Ramacca CT 14 10894 20385
Centuripe EN 15 5470 25855
PaternĂ² CT 15 48228 74083
Santa Maria di Licodia CT 17 7641 81724
Motta Sant'Anastasia CT 18 12116 93840
Palagonia CT 18 16608 110448
Biancavilla CT 19 24007 134455
Adrano CT 20 36122 170577

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Catania (314555 inhabitants)
37 Km W of Acireale (52622 inhabitants)
63 Km N of Ragusa (73313 inhabitants)
63 Km E of Caltanissetta (63360 inhabitants)
64 Km NE of Vittoria (63339 inhabitants)
66 Km NE of Gela (75827 inhabitants)
66 Km NW of Siracusa (122291 inhabitants)
70 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 3.0 1985-04-17
00:06:05
37.49 14.78 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 4809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-17 00:06:05 ± 0.422
Latitude 37.49 ± 0.03
Longitude 14.78 ± 0.04
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4809

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) 4428.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.00421
Epicentral distance of station farthest from the epicenter (degree) 0.02582
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 4809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ORI.Z. 1985-04-17T00:06:50.00 10.0 undecidable manual PN 26 0.0258 -0.91 0.7
--.RCI.Z. 1985-04-17T00:06:39.00 10.0 undecidable manual SG 47 0.0083 2.05 0.1
--.ERC.Z. 1985-04-17T00:06:38.00 10.0 undecidable manual PN 288 0.0163 1.61 0.4
--.GIB.Z. 1985-04-17T00:06:32.50 10.0 undecidable manual SG 310 0.007 0.27 0.7
--.FA1.Z. 1985-04-17T00:06:24.00 10.0 undecidable manual PG 256 0.0081 0.7 1.5
--.RCI.Z. 1985-04-17T00:06:23.50 10.0 undecidable manual PG 47 0.0083 -0.13 1.8
--.PA1.Z. 1985-04-17T00:06:23.50 10.0 undecidable manual SG 166 0.0042 1.02 0.5
--.GIB.Z. 1985-04-17T00:06:20.00 10.0 negative manual PG 310 0.007 -0.91 2.5
--.PA1.Z. 1985-04-17T00:06:14.00 10.0 undecidable manual PG 166 0.0042 -1.28 0.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download