Earthquake with magnitude of Md 2.6 on date 01-05-1998 and time 03:43:54 (Italy) in region 3 km SW Santa Ninfa (TP)

A magnitude Md 2.6 earthquake occured in region: 3 km SW Santa Ninfa (TP), on

  • 01-05-1998 01:43:54 (UTC)
  • 01-05-1998 03:43:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.758, 12.862 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
Santa Ninfa TP 3 5043 5043
Partanna TP 5 10607 15650
Gibellina TP 6 4115 19765
Salemi TP 8 10794 30559
Castelvetrano TP 11 31806 62365
Salaparuta TP 13 1696 64061
Montevago AG 13 3006 67067
Vita TP 13 2056 69123
Poggioreale TP 15 1494 70617
Santa Margherita di Belice AG 16 6363 76980
Campobello di Mazara TP 17 11956 88936
Calatafimi-Segesta TP 18 6712 95648
Menfi AG 20 12592 108240

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Mazara del Vallo (51718 inhabitants)
38 Km E of Marsala (83194 inhabitants)
42 Km SE of Trapani (68759 inhabitants)
59 Km SW of Palermo (674435 inhabitants)
67 Km SW of Bagheria (55387 inhabitants)
81 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 2.6
ML-VAX 2.0
1998-05-01
01:43:54
37.758 12.862 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 336989
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-05-01 01:43:54 ± 0.274
Latitude 37.7580 ± 0.0280
Longitude 12.8620 ± 0.0139
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 336989

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) 3348.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 217
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00316
Epicentral distance of station farthest from the epicenter (degree) 0.02283
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:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 336989
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:15:39

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 336989
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
--.SOI.Z. 1998-05-01T01:44:35.79 10.0 undecidable manual PN 81 0.0228 -0.01 1
--.CS9.Z. 1998-05-01T01:44:13.90 10.0 undecidable manual PG 78 0.0087 0.1 1.7
--.GIB.Z. 1998-05-01T01:44:13.36 10.0 undecidable manual PG 75 0.0085 0 1.9
--.LVI.Z. 1998-05-01T01:44:12.69 10.0 undecidable manual SG 298 0.0042 0.52 0.1
--.ERC.Z. 1998-05-01T01:44:08.18 10.0 undecidable manual SG 322 0.0032 0.36 0.3
--.LVI.Z. 1998-05-01T01:44:04.34 10.0 undecidable manual PG 298 0.0042 -0.21 1.5
--.ERC.Z. 1998-05-01T01:44:01.58 10.0 undecidable manual PG 322 0.0032 -0.46 0.5
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