Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-07-2009 and time 09:01:06 (UTC) in region 2 km SE Valguarnera Caropepe (EN)

A magnitude ML 2.0 earthquake occured in region: 2 km SE Valguarnera Caropepe (EN), on

  • 31-07-2009 09:01:06 (UTC)
  • 31-07-2009 11:01:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.4820, 14.3970 at 29 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Valguarnera Caropepe EN 2 7866 7866
Aidone EN 9 4889 12755
Piazza Armerina EN 11 21886 34641
Raddusa CT 12 3178 37819
Enna EN 14 28019 65838
Calascibetta EN 16 4528 70366
Assoro EN 17 5191 75557
Leonforte EN 18 13439 88996
Mirabella Imbaccari CT 18 4912 93908
Nissoria EN 20 3000 96908

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Caltanissetta (63360 inhabitants)
48 Km N of Gela (75827 inhabitants)
61 Km N of Vittoria (63339 inhabitants)
61 Km W of Catania (314555 inhabitants)
69 Km NW of Ragusa (73313 inhabitants)
69 Km W of Acireale (52622 inhabitants)
74 Km E of Agrigento (59770 inhabitants)
76 Km NW of Modica (54633 inhabitants)
92 Km NW of Siracusa (122291 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 2.0 		2009-07-31
09:01:06		 37.482 14.397 29 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 939199
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-31 09:01:06 ± 0.35
Latitude 37.4820 ± 0.0117
Longitude 14.3970 ± 0.0329
Depth (km) 29 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 939199

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2572
Semi-minor axis of confidence ellipse (meter) 1324
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 3178.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.66
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.81479
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 939199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:54:26

Md:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 939199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:54:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OE.ARSA.HHN. 2009-07-31T09:01:36.90 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHN. 2009-07-31T09:01:33.39 0.6 undecidable manual Sg 132 86.3469 0.591 39
IV.BSSO.HHZ. 2009-07-31T09:01:32.15 10.0 undecidable manual Pg 0 0 0
IV.ALJA.HHE. 2009-07-31T09:01:32.11 10.0 undecidable manual Pg 0 0 0
IV.SSY.HHE. 2009-07-31T09:01:29.37 10.0 undecidable manual Pg 0 0 0
IV.HMDC.HHE. 2009-07-31T09:01:28.57 0.6 undecidable manual Sg 149 67.2771 0.669 39
IV.CSLB.SHZ. 2009-07-31T09:01:27.59 10.0 undecidable manual Pg 0 0 0
IV.HCRL.HHE. 2009-07-31T09:01:25.96 0.3 undecidable manual Sg 111 60.1953 -0.153 71
IV.MMME.HHE. 2009-07-31T09:01:22.12 0.3 undecidable manual Pg 56 90.4428 -0.258 65
IV.HVZN.HHZ. 2009-07-31T09:01:22.93 0.1 undecidable manual Sg 140 43.9227 0.797 78
IV.ASSB.HHZ. 2009-07-31T09:01:21.62 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHN. 2009-07-31T09:01:21.63 0.1 undecidable manual Pg 132 86.3469 -0.136 90
IV.HMDC.HHE. 2009-07-31T09:01:18.50 0.3 undecidable manual Pg 149 67.2771 -0.438 66
IV.GIB.EHE. 2009-07-31T09:01:18.98 0.6 undecidable manual Pg 330 65.0904 0.373 44
IV.GALF.HHZ. 2009-07-31T09:01:18.80 0.1 undecidable manual Sg 30 29.4483 -0.126 100
IV.MNO.SHE. 2009-07-31T09:01:18.32 0.1 undecidable manual Pg 28 56.2992 0.986 71
IV.HCRL.HHE. 2009-07-31T09:01:17.24 0.1 undecidable manual Pg 111 60.1953 -0.666 83
IV.HVZN.HHZ. 2009-07-31T09:01:15.26 0.1 undecidable manual Pg 140 43.9227 -0.348 93
IV.RESU.HHN. 2009-07-31T09:01:15.67 0.6 undecidable manual Pg 302 35.0427 1.227 33
IV.GALF.HHZ. 2009-07-31T09:01:13.27 0.1 undecidable manual Pg 30 29.4483 -0.487 93
IV.RAFF.HHZ. 2009-07-31T09:01:13.39 0.1 undecidable manual Pg 186 28.9488 -0.312 96
IV.ECNV.HHZ. 2009-07-31T09:01:13.94 0.3 undecidable manual Pg 66 30.4473 0.055 75
IV.CAMP.HHN. 2009-07-31T09:01:04.34 10.0 undecidable manual Pg 0 0 0
IV.MEU.SHN. 2009-07-31T09:00:50.15 10.0 undecidable manual Pg 0 0 0
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
Waveforms Seismic signals in miniseed + resp format Download