Earthquake with magnitude of Md 2.2 on date 24-07-1987 and time 11:28:19 (Italy) in region 6 km S Francavilla Marittima (CS)

A magnitude Md 2.2 earthquake occured in region: 6 km S Francavilla Marittima (CS), on

  • 24-07-1987 09:28:19 (UTC)
  • 24-07-1987 11:28:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.7680, 16.4090 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
Francavilla Marittima CS 6 2910 2910
Cassano all'Ionio CS 8 18495 21405
Villapiana CS 10 5387 26792
Cerchiara di Calabria CS 11 2385 29177
Civita CS 11 902 30079
Terranova da Sibari CS 14 5100 35179
Spezzano Albanese CS 15 7028 42207
Frascineto CS 15 2154 44361
San Lorenzo del Vallo CS 15 3394 47755
Plataci CS 15 739 48494
Trebisacce CS 15 9055 57549
San Lorenzo Bellizzi CS 15 644 58193
Albidona CS 18 1352 59545
Castrovillari CS 18 22240 81785

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km N of Cosenza (67546 inhabitants)
88 Km N of Lamezia Terme (70714 inhabitants)
97 Km N of Catanzaro (90612 inhabitants)
98 Km NW of Crotone (62178 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 2.2 1987-07-24
09:28:19
39.768 16.409 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 52709
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-07-24 09:28:19 ± 0.356
Latitude 39.7680 ± 0.0142
Longitude 16.4090 ± 0.0426
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 52709

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) 3972.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 201
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) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00308
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 52709
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:50:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ORI.Z. 1987-07-24T09:28:31.50 10.0 undecidable manual SG 5 0.2775 0.56 0.3
--.MMN.Z. 1987-07-24T09:28:28.20 10.0 undecidable manual PG 290 0.3441 0.8 0.4
--.TS9.Z. 1987-07-24T09:28:26.00 10.0 undecidable manual SG 206 0.1221 0.24 0.6
--.ORI.Z. 1987-07-24T09:28:26.00 10.0 undecidable manual PG 5 0.2775 -0.29 1.2
--.TS9.Z. 1987-07-24T09:28:23.50 10.0 undecidable manual PG 206 0.1221 0.21 1.6
--.CSI.Z. 1987-07-24T09:28:22.20 10.0 undecidable manual PG 280 0.0888 -0.56 1.9
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