Earthquake with magnitude of Md 2.5 on date 26-05-1998 and time 13:46:52 (Italy) in region 2 km NE Santa Ninfa (TP)

A magnitude Md 2.5 earthquake occured in region: 2 km NE Santa Ninfa (TP), on

  • 26-05-1998 11:46:52 (UTC)
  • 26-05-1998 13:46:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.788, 12.904 at 10 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
Gibellina TP 4 4115 9158
Partanna TP 7 10607 19765
Salemi TP 10 10794 30559
Salaparuta TP 10 1696 32255
Poggioreale TP 12 1494 33749
Vita TP 12 2056 35805
Montevago AG 12 3006 38811
Calatafimi-Segesta TP 15 6712 45523
Santa Margherita di Belice AG 15 6363 51886
Castelvetrano TP 16 31806 83692

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Mazara del Vallo (51718 inhabitants)
41 Km E of Marsala (83194 inhabitants)
43 Km SE of Trapani (68759 inhabitants)
54 Km SW of Palermo (674435 inhabitants)
62 Km SW of Bagheria (55387 inhabitants)
80 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 1.9
1998-05-26
11:46:52
37.788 12.904 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 339759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-05-26 11:46:52 ± 0.573
Latitude 37.7880 ± 0.0654
Longitude 12.9040 ± 0.0215
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 339759

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) 7516
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 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00316
Epicentral distance of station farthest from the epicenter (degree) 0.00834
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 339759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:18:15

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 339759
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
--.CS9.Z. 1998-05-26T11:47:25.95 10.0 undecidable manual SG 80 0.0083 1.51 0
--.GIB.Z. 1998-05-26T11:47:23.98 10.0 undecidable manual SG 76 0.0081 0.35 0.5
--.GIB.Z. 1998-05-26T11:47:10.50 10.0 undecidable manual PG 76 0.0081 -0.45 1
--.CS9.Z. 1998-05-26T11:47:10.43 10.0 undecidable manual PG 80 0.0083 -0.54 0.8
--.LVI.Z. 1998-05-26T11:47:10.97 10.0 undecidable manual SG 293 0.0044 0.79 0.2
--.ERC.Z. 1998-05-26T11:47:05.26 10.0 undecidable manual SG 314 0.0032 -0.53 0.4
--.LVI.Z. 1998-05-26T11:47:02.76 10.0 negative manual PG 293 0.0044 0.02 3.4
--.ERC.Z. 1998-05-26T11:47:00.11 10.0 undecidable manual PG 314 0.0032 -0.09 1.7
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download