Earthquake with magnitude of Md 2.6 on date 12-02-1987 and time 20:41:38 (UTC) in region Costa Calabra nord occidentale (Cosenza)

A magnitude Md 2.6 earthquake occured in region: Costa Calabra nord occidentale (Cosenza), on

  • 12-02-1987 20:41:38 (UTC)
  • 12-02-1987 21:41:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.874, 15.723 at 4 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
Praia a Mare CS 6 6725 6725
Tortora CS 7 6187 12912
San Nicola Arcella CS 7 1957 14869
Scalea CS 10 10913 25782
Aieta CS 11 823 26605
Santa Domenica Talao CS 13 1263 27868
Maratea PZ 14 5139 33007
Papasidero CS 16 734 33741
Santa Maria del Cedro CS 17 4954 38695
Trecchina PZ 18 2316 41011
Orsomarso CS 18 1265 42276
Grisolia CS 20 2249 44525

Municipalities with at least 50000 inhabitants

An earthquake occurred to
79 Km NW of Cosenza (67546 inhabitants)
86 Km S of Potenza (67122 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 2.6 1987-02-12
20:41:38
39.874 15.723 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 41209
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-02-12 20:41:38 ± 0.312
Latitude 39.8740 ± 0.0138
Longitude 15.7230 ± 0.0188
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 41209

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) 2220.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.01635
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:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 41209
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:41:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.GR9.Z. 1987-02-12T20:42:19.00 10.0 undecidable manual SN 152 0.0107 -0.28 0.4
--.SO9.Z. 1987-02-12T20:42:11.50 10.0 undecidable manual PN 171 0.0164 0.63 0.4
--.SGO.Z. 1987-02-12T20:42:06.00 10.0 undecidable manual SG 335 0.0067 -0.2 0.6
--.GR9.Z. 1987-02-12T20:42:02.50 10.0 undecidable manual PN 152 0.0107 0.27 1.4
--.ORI.Z. 1987-02-12T20:42:01.50 10.0 undecidable manual SG 71 0.0052 0.92 0.2
--.TS9.Z. 1987-02-12T20:41:58.00 10.0 undecidable manual SG 114 0.0046 -0.6 0.2
--.SGO.Z. 1987-02-12T20:41:54.50 10.0 undecidable manual PG 335 0.0067 -0.18 1.7
--.ORI.Z. 1987-02-12T20:41:51.50 10.0 undecidable manual PG 71 0.0052 0.07 2
--.MG9.Z. 1987-02-12T20:41:50.50 10.0 undecidable manual SG 333 0.0026 0.16 1.1
--.TS9.Z. 1987-02-12T20:41:49.80 10.0 undecidable manual PG 114 0.0046 -0.49 0.9
--.MG9.Z. 1987-02-12T20:41:45.50 10.0 undecidable manual PG 333 0.0026 -0.02 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