Earthquake with magnitude of Md 2.5 on date 28-02-1987 and time 15:53:02 (UTC) in region Golfo di Policastro (Salerno, Potenza)

A magnitude Md 2.5 earthquake occured in region: Golfo di Policastro (Salerno, Potenza), on

  • 28-02-1987 15:53:02 (UTC)
  • 28-02-1987 16:53:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.864, 15.666 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
Praia a Mare CS 10 6725 6725
Tortora CS 11 6187 12912
San Nicola Arcella CS 11 1957 14869
Scalea CS 12 10913 25782
Aieta CS 15 823 26605
Maratea PZ 16 5139 31744
Santa Domenica Talao CS 17 1263 33007
Santa Maria del Cedro CS 19 4954 37961

Municipalities with at least 50000 inhabitants

An earthquake occurred to
81 Km NW of Cosenza (67546 inhabitants)
87 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 2.5 1987-02-28
15:53:02
39.864 15.666 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 42219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-02-28 15:53:02 ± 0.922
Latitude 39.8640 ± 0.0556
Longitude 15.6660 ± 0.0579
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 42219

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) 7921
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 227
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) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.00672
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 42219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:41:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SGO.Z. 1987-02-28T15:53:29.00 10.0 undecidable manual SG 338 0.0067 0.8 0.5
--.ORI.Z. 1987-02-28T15:53:25.00 10.0 undecidable manual SG 72 0.0056 0.72 0.6
--.TS9.Z. 1987-02-28T15:53:20.00 10.0 undecidable manual SG 111 0.0049 -2.04 0.1
--.SGO.Z. 1987-02-28T15:53:18.00 10.0 undecidable manual PG 338 0.0067 0.74 1.4
--.ORI.Z. 1987-02-28T15:53:15.00 10.0 undecidable manual PG 72 0.0056 0.01 2.1
--.TS9.Z. 1987-02-28T15:53:14.50 10.0 undecidable manual PG 111 0.0049 0.8 1.5
--.MG9.Z. 1987-02-28T15:53:12.00 10.0 undecidable manual SG 342 0.0025 -1.42 0.3
--.MG9.Z. 1987-02-28T15:53:08.00 10.0 undecidable manual PG 342 0.0025 -0.73 1.6
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