Earthquake with magnitude of Md 2.2 on date 23-09-1985 and time 23:29:45 (Italy) in region 2 km NE Castrovillari (CS)

A magnitude Md 2.2 earthquake occured in region: 2 km NE Castrovillari (CS), on

  • 23-09-1985 21:29:45 (UTC)
  • 23-09-1985 23:29:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.8320, 16.2160 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
Castrovillari CS 3 22240 22240
Frascineto CS 4 2154 24394
San Basile CS 5 1055 25449
Morano Calabro CS 7 4576 30025
Saracena CS 8 3828 33853
Civita CS 8 902 34755
Cassano all'Ionio CS 10 18495 53250
San Lorenzo Bellizzi CS 12 644 53894
Firmo CS 13 2115 56009
Lungro CS 13 2592 58601
Cerchiara di Calabria CS 15 2385 60986
Francavilla Marittima CS 15 2910 63896
Acquaformosa CS 16 1106 65002
Altomonte CS 17 4488 69490
Terranova di Pollino PZ 18 1208 70698
Viggianello PZ 19 3025 73723
San Donato di Ninea CS 20 1360 75083
San Lorenzo del Vallo CS 20 3394 78477
Alessandria del Carretto CS 20 462 78939

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km N of Cosenza (67546 inhabitants)
96 Km N of Lamezia Terme (70714 inhabitants)
96 Km SE of Potenza (67122 inhabitants)
99 Km SW of Matera (60436 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 1985-09-23
21:29:45
39.832 16.216 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 13629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-23 21:29:45 ± 0.084
Latitude 39.8320 ± 0.0051
Longitude 16.2160 ± 0.0083
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 13629

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) 905.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
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) 0.00065
Epicentral distance of station farthest from the epicenter (degree) 0.00251
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 13629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:16:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ORI.Z. 1985-09-23T21:29:56.00 10.0 undecidable manual SG 38 0.2775 -0.06 0.4
--.MMN.Z. 1985-09-23T21:29:53.20 10.0 undecidable manual SG 288 0.1776 0.26 0
--.ORI.Z. 1985-09-23T21:29:51.50 10.0 undecidable manual PG 38 0.2775 0.05 1.1
--.MMN.Z. 1985-09-23T21:29:49.50 10.0 undecidable manual PG 288 0.1776 -0.16 0.5
--.CSI.Z. 1985-09-23T21:29:47.80 10.0 undecidable manual PG 128 0.0666 0.02 2.9
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