Earthquake with magnitude of ML-VAX 2.1 on date 22-02-1998 and time 18:27:39 (Italy) in region 4 km SW Montevago (AG)

A magnitude ML-VAX 2.1 earthquake occured in region: 4 km SW Montevago (AG), on

  • 22-02-1998 17:27:39 (UTC)
  • 22-02-1998 18:27:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.672, 12.972 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
Montevago AG 4 3006 3006
Santa Margherita di Belice AG 5 6363 9369
Menfi AG 8 12592 21961
Partanna TP 9 10607 32568
Salaparuta TP 10 1696 34264
Poggioreale TP 12 1494 35758
Sambuca di Sicilia AG 13 5877 41635
Santa Ninfa TP 14 5043 46678
Castelvetrano TP 16 31806 78484
Gibellina TP 18 4115 82599
Contessa Entellina PA 20 1766 84365

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Mazara del Vallo (51718 inhabitants)
49 Km E of Marsala (83194 inhabitants)
56 Km SE of Trapani (68759 inhabitants)
60 Km SW of Palermo (674435 inhabitants)
66 Km SW of Bagheria (55387 inhabitants)
67 Km NW of Agrigento (59770 inhabitants)
98 Km W of Caltanissetta (63360 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
ML-VAX 2.1 1998-02-22
17:27:39
37.672 12.972 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 323699
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-02-22 17:27:39 ± 0.58
Latitude 37.6720 ± 0.0508
Longitude 12.9720 ± 0.0195
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 323699

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) 5908.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 229
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00421
Epicentral distance of station farthest from the epicenter (degree) 0.00809
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 323699
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. 1998-02-22T17:28:11.40 10.0 undecidable manual SG 72 0.0081 0.32 0.5
--.LVI.Z. 1998-02-22T17:28:01.47 10.0 undecidable manual SG 301 0.0053 0.91 0.1
--.GIB.Z. 1998-02-22T17:27:57.27 10.0 undecidable manual PG 68 0.008 -0.02 1.7
--.CS9.Z. 1998-02-22T17:27:57.54 10.0 undecidable manual PG 72 0.0081 -0.06 1.7
--.ERC.Z. 1998-02-22T17:27:56.86 10.0 undecidable manual SG 320 0.0042 0.06 0.7
--.LVI.Z. 1998-02-22T17:27:51.87 10.0 undecidable manual PG 301 0.0053 0.14 1.8
--.ERC.Z. 1998-02-22T17:27:48.49 10.0 undecidable manual PG 320 0.0042 -1.07 0.4
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