Earthquake with magnitude of Md 2.4 on date 15-10-1997 and time 02:46:47 (Italy) in region 5 km W Salaparuta (TP)

A magnitude Md 2.4 earthquake occured in region: 5 km W Salaparuta (TP), on

  • 15-10-1997 00:46:47 (UTC)
  • 15-10-1997 02:46:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.778, 12.951 at 13 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 5 1696 1696
Santa Ninfa TP 6 5043 6739
Poggioreale TP 8 1494 8233
Gibellina TP 8 4115 12348
Partanna TP 8 10607 22955
Montevago AG 9 3006 25961
Santa Margherita di Belice AG 12 6363 32324
Salemi TP 14 10794 43118
Vita TP 16 2056 45174
Calatafimi-Segesta TP 17 6712 51886
Castelvetrano TP 18 31806 83692
Camporeale PA 19 3373 87065
Roccamena PA 19 1505 88570
Menfi AG 20 12592 101162

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)
47 Km SE of Trapani (68759 inhabitants)
52 Km SW of Palermo (674435 inhabitants)
60 Km SW of Bagheria (55387 inhabitants)
76 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 2.4
ML-VAX 2.0
1997-10-15
00:46:47
37.778 12.951 13 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 299999
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-15 00:46:47 ± 0.064
Latitude 37.7780 ± 0.0080
Longitude 12.9510 ± 0.0026
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 299999

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) 922.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 213
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
Epicentral distance of station closest to the epicenter (degree) 0.0034
Epicentral distance of station farthest from the epicenter (degree) 0.01813
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 299999
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:41:57

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 299999
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
--.ATN.Z. 1997-10-15T00:47:20.50 10.0 undecidable manual PN 78 0.0181 0 0.9
--.LVI.Z. 1997-10-15T00:47:06.13 10.0 undecidable manual SG 293 0.0047 0.1 0.5
--.CS9.Z. 1997-10-15T00:47:04.93 10.0 undecidable manual PG 79 0.008 0 1.5
--.GIB.Z. 1997-10-15T00:47:04.50 10.0 undecidable manual PG 75 0.0079 0.02 1.5
--.ERC.Z. 1997-10-15T00:47:01.56 10.0 undecidable manual SG 311 0.0034 0.05 0.4
--.LVI.Z. 1997-10-15T00:46:58.50 10.0 undecidable manual PG 293 0.0047 -0.01 1.4
--.ERC.Z. 1997-10-15T00:46:55.34 10.0 undecidable manual PG 311 0.0034 -0.11 0.8
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