Earthquake with magnitude of Md 2.5 on date 03-03-1997 and time 07:51:47 (Italy) in region 6 km NW Salaparuta (TP)

A magnitude Md 2.5 earthquake occured in region: 6 km NW Salaparuta (TP), on

  • 03-03-1997 06:51:47 (UTC)
  • 03-03-1997 07:51:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.786, 12.949 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Salaparuta TP 6 1696 1696
Santa Ninfa TP 6 5043 6739
Gibellina TP 7 4115 10854
Poggioreale TP 8 1494 12348
Partanna TP 9 10607 22955
Montevago AG 10 3006 25961
Santa Margherita di Belice AG 12 6363 32324
Salemi TP 13 10794 43118
Vita TP 15 2056 45174
Calatafimi-Segesta TP 16 6712 51886
Camporeale PA 18 3373 55259
Castelvetrano TP 18 31806 87065
Roccamena PA 19 1505 88570

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Mazara del Vallo (51718 inhabitants)
45 Km E of Marsala (83194 inhabitants)
46 Km SE of Trapani (68759 inhabitants)
52 Km SW of Palermo (674435 inhabitants)
59 Km SW of Bagheria (55387 inhabitants)
77 Km NW of Agrigento (59770 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 1.8
1997-03-03
06:51:47
37.786 12.949 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 262069
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-03-03 06:51:47 ± 0.363
Latitude 37.7860 ± 0.0433
Longitude 12.9490 ± 0.0318
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 262069

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) 5562.8
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 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.0034
Epicentral distance of station farthest from the epicenter (degree) 0.01247
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 3
Type of magnitude Md
Reference to an origin 262069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:07:55

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 262069
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
--.GIB.Z. 1997-03-03T06:52:20.00 10.0 undecidable manual SG 75 0.0079 1.64 0.1
--.FAI.Z. 1997-03-03T06:52:16.00 10.0 undecidable manual SG 131 0.0069 1.02 0.4
--.MNO.Z. 1997-03-03T06:52:13.90 10.0 undecidable manual PN 83 0.0125 0.61 1.1
--.LVI.Z. 1997-03-03T06:52:07.64 10.0 undecidable manual SG 292 0.0047 0.57 0.6
--.GIB.Z. 1997-03-03T06:52:05.00 10.0 undecidable manual PG 75 0.0079 -0.29 1.7
--.FAI.Z. 1997-03-03T06:52:03.24 10.0 undecidable manual PG 131 0.0069 -0.1 1.9
--.CS9.Z. 1997-03-03T06:52:03.98 10.0 undecidable manual PG 79 0.008 -1.76 0.3
--.LVI.Z. 1997-03-03T06:51:57.87 10.0 undecidable manual PG 292 0.0047 -0.9 1.3
--.ERC.Z. 1997-03-03T06:51:56.48 10.0 undecidable manual PG 311 0.0034 0.55 1.5
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