Earthquake with magnitude of Md 2.8 on date 09-02-1987 and time 13:31:56 (Italy) in region Mar Ionio Meridionale (MARE)

A magnitude Md 2.8 earthquake occured in region: Mar Ionio Meridionale (MARE), on

  • 09-02-1987 12:31:56 (UTC)
  • 09-02-1987 13:31:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.51, 15.78 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km E of Acireale (52622 inhabitants)
62 Km E of Catania (314555 inhabitants)
66 Km NE of Siracusa (122291 inhabitants)
68 Km S of Reggio di Calabria (183035 inhabitants)
79 Km S of Messina (238439 inhabitants)
Recent and historical Seismicity
Seismic hazard
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 2.8 1987-02-09
37.51 15.79 10 2013-07-15
Bollettino Sismico Italiano INGV 40879
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 1987-02-09 12:31:56 ± 0.888
Latitude 37.51 ± 0.03
Longitude 15.79 ± 0.06
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 40879


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) 6213.6
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 261
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00623
Epicentral distance of station farthest from the epicenter (degree) 0.01522
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information


Field Value
Value 2.8
Num. used stations 2
Type of magnitude Md
Reference to an origin 40879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:40:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FAI.Z. 1987-02-09T12:32:49.00 10.0 undecidable manual SN 262 0.0152 1.55 0.1
--.MS9.Z. 1987-02-09T12:32:29.50 10.0 undecidable manual SG 296 0.0086 0.09 1.1
--.FAI.Z. 1987-02-09T12:32:26.00 10.0 undecidable manual PN 262 0.0152 0.03 1.5
--.ML9.Z. 1987-02-09T12:32:23.00 10.0 undecidable manual SG 239 0.007 -0.78 0.8
--.MS9.Z. 1987-02-09T12:32:14.00 10.0 undecidable manual PG 296 0.0086 -1.56 0.5
--.ML9.Z. 1987-02-09T12:32:13.00 10.0 undecidable manual PG 239 0.007 0.69 1.4
--.AT9.Z. 1987-02-09T12:32:11.00 10.0 undecidable manual PG 338 0.0062 0.27 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download