Earthquake with magnitude of Md 3.1 on date 15-03-1987 and time 08:52:44 (UTC) in region Costa Cilentana (Salerno)

A magnitude Md 3.1 earthquake occured in region: Costa Cilentana (Salerno), on

  • 15-03-1987 08:52:44 (UTC)
  • 15-03-1987 09:52:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.99, 15.38 at 360 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
Camerota SA 5 6985 6985
San Giovanni a Piro SA 9 3780 10765
Centola SA 11 5168 15933
Celle di Bulgheria SA 12 1922 17855
Roccagloriosa SA 14 1722 19577
San Mauro la Bruca SA 17 603 20180
Torre Orsaia SA 18 2118 22298
Pisciotta SA 19 2641 24939
Ispani SA 19 1026 25965
Santa Marina SA 19 3243 29208
Futani SA 19 1204 30412
Montano Antilia SA 20 2077 32489

Municipalities with at least 50000 inhabitants

An earthquake occurred to
77 Km SE of Battipaglia (50786 inhabitants)
81 Km SW of Potenza (67122 inhabitants)
93 Km SE of Salerno (135261 inhabitants)
98 Km SE of Cava de' Tirreni (53659 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 3.1 1987-03-15
08:52:44
39.99 15.39 360 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 42909
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-03-15 08:52:44 ± 1.982
Latitude 39.99 ± 0.04
Longitude 15.39 ± 0.08
Depth (km) 360 ± 16 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 42909

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) 7998
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 222
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.01894
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 42909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:42:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.LCI.Z. 1987-03-15T08:53:39.00 10.0 undecidable manual P 80 0.0189 -0.04 1
--.AT9.Z. 1987-03-15T08:53:37.00 10.0 undecidable manual P 178 0.0164 -0.01 1.1
--.BRT.Z. 1987-03-15T08:53:35.50 10.0 undecidable manual P 56 0.0144 -0.03 1.2
--.GR9.Z. 1987-03-15T08:53:34.50 10.0 undecidable manual P 145 0.0127 0.07 1.3
--.ORI.Z. 1987-03-15T08:53:32.00 10.0 undecidable manual P 85 0.0073 0.35 0.5
--.CSI.Z. 1987-03-15T08:53:31.50 10.0 undecidable manual P 106 0.0065 0.13 1.3
--.TS9.Z. 1987-03-15T08:53:31.50 10.0 undecidable manual P 114 0.0072 -0.11 1.3
--.MG9.Z. 1987-03-15T08:53:30.50 10.0 undecidable manual P 41 0.0018 0.17 1.1
--.MMN.Z. 1987-03-15T08:53:30.20 10.0 undecidable manual P 101 0.0042 -0.53 0.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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