Earthquake with magnitude of Md 2.3 on date 03-10-1986 and time 07:15:12 (Italy) in region 1 km E Randazzo (CT)

A magnitude Md 2.3 earthquake occured in region: 1 km E Randazzo (CT), on

  • 03-10-1986 06:15:12 (UTC)
  • 03-10-1986 07:15:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8770, 14.9630 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
Randazzo CT 1 10900 10900
Santa Domenica Vittoria ME 4 980 11880
Roccella Valdemone ME 8 666 12546
Moio Alcantara ME 8 717 13263
Malvagna ME 9 733 13996
Maletto CT 10 3920 17916
Floresta ME 13 485 18401
Maniace CT 14 3765 22166
Castiglione di Sicilia CT 14 3215 25381
Bronte CT 15 19172 44553
Francavilla di Sicilia ME 16 3945 48498
Linguaglossa CT 16 5403 53901
Montalbano Elicona ME 17 2287 56188
Motta Camastra ME 19 845 57033
San Piero Patti ME 19 2915 59948

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of Acireale (52622 inhabitants)
43 Km N of Catania (314555 inhabitants)
63 Km SW of Messina (238439 inhabitants)
65 Km W of Reggio di Calabria (183035 inhabitants)
90 Km NE of Caltanissetta (63360 inhabitants)
95 Km N of Siracusa (122291 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
Bulletin
Rev1000
Md 2.3 1986-10-03
06:15:12
37.877 14.963 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 35199
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-10-03 06:15:12 ± 0.414
Latitude 37.8770 ± 0.0372
Longitude 14.9630 ± 0.0262
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 35199

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) 4736.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
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) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.00194
Epicentral distance of station farthest from the epicenter (degree) 0.00793
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 35199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:35:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SO9.Z. 1986-10-03T06:15:44.00 10.0 undecidable manual SG 76 0.8769 1.29 0.3
--.GIB.Z. 1986-10-03T06:15:38.00 10.0 undecidable manual SG 278 0.7437 -0.37 0.8
--.ML9.Z. 1986-10-03T06:15:37.50 10.0 undecidable manual SG 181 0.7659 -1.48 0.3
--.ML9.Z. 1986-10-03T06:15:29.00 10.0 undecidable manual PG 181 0.7659 1.22 1
--.SO9.Z. 1986-10-03T06:15:29.00 10.0 undecidable manual PG 76 0.8769 -0.94 1.3
--.GIB.Z. 1986-10-03T06:15:26.50 10.0 undecidable manual PG 278 0.7437 -0.93 1.4
--.MS9.Z. 1986-10-03T06:15:22.50 10.0 undecidable manual SG 284 0.2109 1.09 0.5
--.MS9.Z. 1986-10-03T06:15:18.00 10.0 undecidable manual PG 284 0.2109 0.36 2.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download