Earthquake with magnitude of Md 3.0 on date 27-04-1985 and time 17:06:34 (UTC) in region 2 km N Trecastagni (CT)

A magnitude Md 3.0 earthquake occured in region: 2 km N Trecastagni (CT), on

  • 27-04-1985 17:06:34 (UTC)
  • 27-04-1985 19:06:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.64, 15.07 at 5 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
Trecastagni CT 2 10910 10910
Pedara CT 3 14102 25012
Viagrande CT 4 8563 33575
Nicolosi CT 5 7463 41038
Aci Bonaccorsi CT 6 3524 44562
Aci Sant'Antonio CT 6 17984 62546
Tremestieri Etneo CT 7 20589 83135
Zafferana Etnea CT 7 9517 92652
San Giovanni la Punta CT 7 23060 115712
Aci Catena CT 7 29851 145563
Mascalucia CT 7 31958 177521
Santa Venerina CT 8 8592 186113
Valverde CT 8 7840 193953
San Pietro Clarenza CT 8 7743 201696
Gravina di Catania CT 9 25838 227534
San Gregorio di Catania CT 9 11966 239500
Acireale CT 9 52622 292122
Sant'Agata li Battiati CT 9 9479 301601
Camporotondo Etneo CT 10 5023 306624
Belpasso CT 10 28108 334732
Milo CT 10 1087 335819
Aci Castello CT 11 18723 354542
Ragalna CT 12 3924 358466
Sant'Alfio CT 13 1582 360048
Giarre CT 14 27659 387707
Misterbianco CT 14 49410 437117
Catania CT 15 314555 751672
Riposto CT 16 14838 766510
PaternĂ² CT 16 48228 814738
Santa Maria di Licodia CT 17 7641 822379
Motta Sant'Anastasia CT 17 12116 834495
Mascali CT 17 14282 848777
Biancavilla CT 18 24007 872784

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km W of Acireale (52622 inhabitants)
15 Km N of Catania (314555 inhabitants)
67 Km N of Siracusa (122291 inhabitants)
73 Km SW of Reggio di Calabria (183035 inhabitants)
75 Km SW of Messina (238439 inhabitants)
85 Km NE of Ragusa (73313 inhabitants)
90 Km NE of Vittoria (63339 inhabitants)
91 Km E of Caltanissetta (63360 inhabitants)
91 Km N of Modica (54633 inhabitants)
97 Km NE of Gela (75827 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 1985-04-27
17:06:34
37.64 15.07 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 5559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-27 17:06:34 ± 0.856
Latitude 37.64 ± 0.03
Longitude 15.07 ± 0.07
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5559

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) 7315.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 203
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00559
Epicentral distance of station farthest from the epicenter (degree) 0.01052
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 5559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:10:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FA1.Z. 1985-04-27T17:07:15.00 10.0 undecidable manual SN 252 0.0105 0.88 0.3
--.SA1.Z. 1985-04-27T17:07:10.00 10.0 undecidable manual SG 348 0.0084 2.49 0
--.GIB.Z. 1985-04-27T17:07:06.00 10.0 undecidable manual SG 293 0.008 -0.07 0.6
--.PA1.Z. 1985-04-27T17:06:58.00 10.0 undecidable manual SG 191 0.0056 0.79 0.4
--.FA1.Z. 1985-04-27T17:06:57.00 10.0 undecidable manual PN 252 0.0105 -0.34 1.3
--.GIB.Z. 1985-04-27T17:06:52.50 10.0 positive manual PG 293 0.008 -0.19 3.1
--.SA1.Z. 1985-04-27T17:06:52.50 10.0 undecidable manual PG 348 0.0084 -1.02 0.7
--.PA1.Z. 1985-04-27T17:06:47.50 10.0 undecidable manual PG 191 0.0056 -0.08 1.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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