Earthquake with magnitude of Md 2.4 on date 20-06-1998 and time 16:40:19 (Italy) in region 6 km NE Gibellina (TP)

A magnitude Md 2.4 earthquake occured in region: 6 km NE Gibellina (TP), on

  • 20-06-1998 14:40:19 (UTC)
  • 20-06-1998 16:40:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.838, 12.933 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
Gibellina TP 6 4115 4115
Santa Ninfa TP 8 5043 9158
Calatafimi-Segesta TP 11 6712 15870
Vita TP 11 2056 17926
Salaparuta TP 11 1696 19622
Salemi TP 12 10794 30416
Poggioreale TP 12 1494 31910
Partanna TP 13 10607 42517
Camporeale PA 16 3373 45890
Montevago AG 16 3006 48896
Alcamo TP 16 45307 94203
Santa Margherita di Belice AG 18 6363 100566
Roccamena PA 20 1505 102071

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Mazara del Vallo (51718 inhabitants)
42 Km SE of Trapani (68759 inhabitants)
44 Km E of Marsala (83194 inhabitants)
49 Km SW of Palermo (674435 inhabitants)
57 Km SW of Bagheria (55387 inhabitants)
82 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
1998-06-20
14:40:19
37.838 12.933 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 343139
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-06-20 14:40:19 ± 0.488
Latitude 37.8380 ± 0.0474
Longitude 12.9330 ± 0.0167
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 343139

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) 5475.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 204
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.003
Epicentral distance of station farthest from the epicenter (degree) 0.00809
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 343139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:21:23

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 343139
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. 1998-06-20T14:40:50.26 10.0 undecidable manual SG 79 0.0079 -0.27 0.6
--.GIB.Z. 1998-06-20T14:40:38.25 10.0 undecidable manual PG 79 0.0079 0.8 1
--.MPG.Z. 1998-06-20T14:40:38.00 10.0 undecidable manual SG 44 0.0041 0.61 0.6
--.CS9.Z. 1998-06-20T14:40:38.37 10.0 undecidable manual PG 83 0.0081 0.41 1.4
--.LVI.Z. 1998-06-20T14:40:37.90 10.0 undecidable manual SG 287 0.0044 -0.36 0.8
--.ERC.Z. 1998-06-20T14:40:34.26 10.0 undecidable manual SG 305 0.003 1.58 0.1
--.LVI.Z. 1998-06-20T14:40:29.99 10.0 undecidable manual PG 287 0.0044 -0.37 1.9
--.MPG.Z. 1998-06-20T14:40:28.50 10.0 undecidable manual PG 44 0.0041 -1.36 0.5
--.ERC.Z. 1998-06-20T14:40:27.40 10.0 undecidable manual PG 305 0.003 -0.1 2.1
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