Earthquake with magnitude of ML 2.1 on date 30-08-2008 and time 20:04:22 (UTC) in region 2 km W Pollina (PA)

A magnitude ML 2.1 earthquake occured in region: 2 km W Pollina (PA), on

  • 30-08-2008 20:04:22 (UTC)
  • 30-08-2008 22:04:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9950, 14.1200 at 2 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
Pollina PA 2 2974 2974
Castelbuono PA 7 8943 11917
Cefalù PA 10 14393 26310
Tusa ME 11 2925 29235
San Mauro Castelverde PA 11 1701 30936
Isnello PA 11 1589 32525
Gratteri PA 13 963 33488
Geraci Siculo PA 15 1945 35433
Pettineo ME 15 1350 36783
Lascari PA 16 3588 40371
Motta d'Affermo ME 16 739 41110
Collesano PA 18 4054 45164
Reitano ME 20 806 45970

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km E of Bagheria (55387 inhabitants)
56 Km N of Caltanissetta (63360 inhabitants)
68 Km E of Palermo (674435 inhabitants)
90 Km NE 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 2.1
ML 2.1
2008-08-30
20:04:22
37.995 14.12 2 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 714119
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2008-08-30 20:04:22 ± 0.11
Latitude 37.9950 ± 0.0054
Longitude 14.1200 ± 0.0091
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 714119

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 929
Semi-minor axis of confidence ellipse (meter) 380
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 188
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) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.07374
Epicentral distance of station farthest from the epicenter (degree) 0.67179
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 714119
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 13:31:05

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 714119
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 13:31:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IFIL.BHZ. 2008-08-30T20:04:46.49 0.6 undecidable manual Sg 32 74.5698 0.056 44
I1.IACL.BHN. 2008-08-30T20:04:43.29 0.6 undecidable manual Sg 19 63.0924 -0.085 45
IV.IFIL.BHZ. 2008-08-30T20:04:36.08 0.3 undecidable manual Pg 32 74.5698 -0.067 66
I1.IACL.BHN. 2008-08-30T20:04:34.46 0.3 undecidable manual Pg 19 63.0924 0.084 67
IV.GIB.EHZ. 2008-08-30T20:04:25.06 0.3 undecidable manual Sg 266 8.1807 0.045 75
IV.CSLB.SHZ. 2008-08-30T20:04:25.03 0.6 undecidable manual Sg 220 8.3805 -0.056 50
IV.GIB.EHZ. 2008-08-30T20:04:23.71 0.1 positive manual Pg 266 8.1807 -0.067 100
IV.CSLB.SHZ. 2008-08-30T20:04:23.86 0.1 positive manual Pg 220 8.3805 0.041 100
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