Earthquake with magnitude of Md 2.8 on date 04-12-1985 and time 11:31:28 (Italy) in region 5 km N Umbriatico (KR)

A magnitude Md 2.8 earthquake occured in region: 5 km N Umbriatico (KR), on

  • 04-12-1985 10:31:28 (UTC)
  • 04-12-1985 11:31:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.4, 16.9 at 16 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
Umbriatico KR 6 863 863
Scala Coeli CS 6 1014 1877
Campana CS 6 1813 3690
Terravecchia CS 8 823 4513
Crucoli KR 9 3115 7628
Mandatoriccio CS 10 2872 10500
Verzino KR 10 1851 12351
Pallagorio KR 10 1217 13568
Cariati CS 11 8355 21923
Pietrapaola CS 12 1141 23064
Carfizzi KR 12 661 23725
Bocchigliero CS 12 1298 25023
CirĂ² KR 14 2936 27959
Savelli KR 14 1271 29230
San Nicola dell'Alto KR 14 856 30086
Melissa KR 15 3549 33635
Caloveto CS 17 1263 34898
Casabona KR 18 2718 37616
Castelsilano KR 18 1015 38631
Calopezzati CS 20 1369 40000
Cropalati CS 20 1084 41084
Strongoli KR 20 6571 47655
Cerenzia KR 20 1152 48807

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of Crotone (62178 inhabitants)
57 Km E of Cosenza (67546 inhabitants)
61 Km NE of Catanzaro (90612 inhabitants)
69 Km NE of Lamezia Terme (70714 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 2.8 1985-12-04
10:31:28
39.4 16.9 16 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 17379
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-04 10:31:28 ± 0.619
Latitude 39.40 ± 0.02
Longitude 16.90 ± 0.06
Depth (km) 16 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 17379

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) 5952
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 192
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.01336
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 17379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BRT.Z. 1985-12-04T10:31:54.00 10.0 undecidable manual PN 7 0.0134 -0.06 1.2
--.CZI.Z. 1985-12-04T10:31:51.00 10.0 undecidable manual SG 252 0.0055 0.74 0.4
--.DR2.Z. 1985-12-04T10:31:48.20 10.0 undecidable manual PN 224 0.0096 -0.12 1.5
--.MMN.Z. 1985-12-04T10:31:46.40 10.0 undecidable manual PG 305 0.0076 1.07 0.7
--.CZI.Z. 1985-12-04T10:31:39.40 10.0 undecidable manual PG 252 0.0055 -1.6 0.3
--.SE2.Z. 1985-12-04T10:31:37.50 10.0 undecidable manual PG 199 0.0037 0.21 1.5
--.ROI.Z. 1985-12-04T10:31:34.90 10.0 undecidable manual PG 303 0.0028 -0.44 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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