Earthquake with magnitude of Md 2.8 on date 20-12-1994 and time 06:40:52 (UTC) in region Tirreno Meridionale (MARE)

A magnitude Md 2.8 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 20-12-1994 06:40:52 (UTC)
  • 20-12-1994 07:40:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.86, 14.05 at 400 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
98 Km NE of Bagheria (55387 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 1994-12-20
06:40:52
38.86 14.05 400 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 221469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-12-20 06:40:52 ± 1.487
Latitude 38.86 ± 0.08
Longitude 14.05 ± 0.12
Depth (km) 400 ± 14 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 221469

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) 13752
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 240
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.00607
Epicentral distance of station farthest from the epicenter (degree) 0.0187
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 221469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:29:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SOI.Z. 1994-12-20T06:42:30.63 10.0 undecidable manual S 116 0.0158 0.33 0.3
--.ROI.Z. 1994-12-20T06:41:51.10 10.0 undecidable manual P 69 0.0187 0.16 1.1
--.CSI.Z. 1994-12-20T06:41:51.62 10.0 undecidable manual P 61 0.0176 1.43 0.1
--.PZI.Z. 1994-12-20T06:41:50.93 10.0 positive manual P 158 0.0174 0.95 0.8
--.TDS.Z. 1994-12-20T06:41:50.49 10.0 undecidable manual P 65 0.0175 0.45 1
--.GRI.Z. 1994-12-20T06:41:49.33 10.0 positive manual P 90 0.0166 -0.06 2.3
--.SOI.Z. 1994-12-20T06:41:48.24 10.0 negative manual P 116 0.0158 -0.56 1.3
--.MO9.Z. 1994-12-20T06:41:47.50 10.0 undecidable manual P 123 0.0139 -0.09 1.2
--.CZI.Z. 1994-12-20T06:41:47.82 10.0 undecidable manual P 77 0.0149 -0.41 0.8
--.GMB.Z. 1994-12-20T06:41:47.79 10.0 undecidable manual P 116 0.0139 0.16 1.3
--.ATN.Z. 1994-12-20T06:41:45.68 10.0 undecidable manual P 122 0.0117 -0.69 0.5
--.SA1.Z. 1994-12-20T06:41:44.00 10.0 undecidable manual P 115 0.0061 -0.01 1.2
--.GIB.Z. 1994-12-20T06:41:44.36 10.0 undecidable manual P 181 0.0078 -0.21 1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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