Earthquake with magnitude of Md 2.0 on date 31-10-1987 and time 07:19:41 (Italy) in region 3 km NW Santa Domenica Vittoria (ME)

A magnitude Md 2.0 earthquake occured in region: 3 km NW Santa Domenica Vittoria (ME), on

  • 31-10-1987 06:19:41 (UTC)
  • 31-10-1987 07:19:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.94, 14.94 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
Santa Domenica Vittoria ME 3 980 980
Floresta ME 6 485 1465
Randazzo CT 7 10900 12365
Roccella Valdemone ME 7 666 13031
Malvagna ME 11 733 13764
Moio Alcantara ME 11 717 14481
Montalbano Elicona ME 12 2287 16768
Ucria ME 13 1058 17826
San Piero Patti ME 13 2915 20741
Maletto CT 13 3920 24661
Raccuja ME 14 1041 25702
Maniace CT 14 3765 29467
Tortorici ME 14 6435 35902
Castiglione di Sicilia CT 18 3215 39117
Galati Mamertino ME 18 2627 41744
Basicò ME 18 612 42356
Sinagra ME 18 2705 45061
Francavilla di Sicilia ME 18 3945 49006
Librizzi ME 18 1660 50666
Bronte CT 19 19172 69838
Longi ME 19 1473 71311
Tripi ME 19 873 72184
Novara di Sicilia ME 20 1337 73521
Castell'Umberto ME 20 3128 76649

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of Acireale (52622 inhabitants)
50 Km N of Catania (314555 inhabitants)
62 Km SW of Messina (238439 inhabitants)
65 Km W of Reggio di Calabria (183035 inhabitants)
91 Km NE of Caltanissetta (63360 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 2.0
ML-VAX 1.5
1987-10-31
06:19:41
37.94 14.94 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 57959
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-10-31 06:19:41 ± 0.63
Latitude 37.94 ± 0.03
Longitude 14.94 ± 0.05
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 57959

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) 5879.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 236
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.00421
Epicentral distance of station farthest from the epicenter (degree) 0.00801
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 57959
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:55:31

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 57959
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SOI.Z. 1987-10-31T06:20:12.11 10.0 undecidable manual SG 81 0.008 0.5 0.4
--.MEU.Z. 1987-10-31T06:20:09.35 10.0 undecidable manual SG 186 0.0074 -0.28 0.7
--.ATN.Z. 1987-10-31T06:19:58.30 10.0 undecidable manual SG 62 0.0042 0.24 0.6
--.SOI.Z. 1987-10-31T06:19:57.60 10.0 undecidable manual PG 81 0.008 -1.1 0.5
--.MEU.Z. 1987-10-31T06:19:57.81 10.0 undecidable manual PG 186 0.0074 0.26 1.7
--.ATN.Z. 1987-10-31T06:19:50.87 10.0 undecidable manual PG 62 0.0042 -0.01 2
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