Earthquake with magnitude of Md 2.5 on date 16-04-2003 and time 23:54:11 (Italy) in region Tirreno Meridionale (MARE)

A magnitude Md 2.5 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 16-04-2003 21:54:11 (UTC)
  • 16-04-2003 23:54:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.645, 13.817 at 5 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
68 Km NE of Bagheria (55387 inhabitants)
71 Km NE of Palermo (674435 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 2.5
ML-VAX 2.5
2003-04-16
21:54:11
38.645 13.817 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 475409
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2003-04-16 21:54:11 ± 0.296
Latitude 38.6450 ± 0.0185
Longitude 13.8170 ± 0.0173
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 475409

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) 2548
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00445
Epicentral distance of station farthest from the epicenter (degree) 0.01044
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 475409
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:31:56

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 475409
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 Takeoff_angle Residual Weight
--.CLTB.Z. 2003-04-16T21:54:35.83 10.0 undecidable manual PN 203 0.0104 1.62 0.1
--.GIB.Z. 2003-04-16T21:54:35.95 10.0 undecidable manual SG 165 0.0061 0.06 0.6
--.MPG.Z. 2003-04-16T21:54:33.36 10.0 undecidable manual SG 216 0.0053 -0.14 0.6
--.USI.Z. 2003-04-16T21:54:29.96 10.0 undecidable manual SG 277 0.0045 -0.35 0.5
--.SLNA.Z. 2003-04-16T21:54:27.74 10.0 undecidable manual PG 95 0.0071 -0.06 1.5
--.CSLB.Z. 2003-04-16T21:54:26.40 10.0 undecidable manual PG 164 0.0066 -0.52 0.9
--.GIB.Z. 2003-04-16T21:54:25.58 10.0 undecidable manual PG 165 0.0061 0.06 1.6
--.MPG.Z. 2003-04-16T21:54:24.11 10.0 undecidable manual PG 216 0.0053 -0.02 1.6
--.USI.Z. 2003-04-16T21:54:22.24 10.0 undecidable manual PG 277 0.0045 -0.05 1.6
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