Earthquake with magnitude of Md 2.1 on date 13-08-1987 and time 12:40:37 (Italy) in region 2 km SE Frascineto (CS)

A magnitude Md 2.1 earthquake occured in region: 2 km SE Frascineto (CS), on

  • 13-08-1987 10:40:37 (UTC)
  • 13-08-1987 12:40:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.8270, 16.2800 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
Frascineto CS 2 2154 2154
Civita CS 3 902 3056
Cassano all'Ionio CS 6 18495 21551
Castrovillari CS 7 22240 43791
San Lorenzo Bellizzi CS 8 644 44435
Francavilla Marittima CS 9 2910 47345
Cerchiara di Calabria CS 10 2385 49730
San Basile CS 10 1055 50785
Saracena CS 12 3828 54613
Morano Calabro CS 12 4576 59189
Firmo CS 14 2115 61304
Villapiana CS 15 5387 66691
Plataci CS 15 739 67430
Lungro CS 16 2592 70022
Terranova di Pollino PZ 17 1208 71230
Alessandria del Carretto CS 17 462 71692
San Lorenzo del Vallo CS 18 3394 75086
Spezzano Albanese CS 18 7028 82114
Altomonte CS 19 4488 86602
Terranova da Sibari CS 20 5100 91702
Albidona CS 20 1352 93054
Acquaformosa CS 20 1106 94160

Municipalities with at least 50000 inhabitants

An earthquake occurred to
59 Km N of Cosenza (67546 inhabitants)
95 Km N of Lamezia Terme (70714 inhabitants)
97 Km S of Matera (60436 inhabitants)
99 Km SE 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 2.1
ML-VAX 1.5
1987-08-13
10:40:37
39.827 16.28 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 53859
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-08-13 10:40:37 ± 0.193
Latitude 39.8270 ± 0.0169
Longitude 16.2800 ± 0.0207
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 53859

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) 2585.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.00227
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 53859
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:51:56

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 53859
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(km) Takeoff_angle Residual Weight
--.ORI.Z. 1987-08-13T10:40:48.42 10.0 undecidable manual SG 29 0.2553 0.64 0
--.MMN.Z. 1987-08-13T10:40:47.20 10.0 undecidable manual SG 285 0.222 0.24 0.4
--.ORI.Z. 1987-08-13T10:40:43.20 10.0 undecidable manual PG 29 0.2553 -0.47 0.3
--.MMN.Z. 1987-08-13T10:40:42.80 10.0 undecidable manual PG 285 0.222 -0.22 1
--.TS9.Z. 1987-08-13T10:40:41.95 10.0 undecidable manual PG 165 0.1665 0 1.4
--.CSI.Z. 1987-08-13T10:40:39.80 10.0 undecidable manual PG 166 0.0333 -0.05 2.8
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