Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 23-12-2009 and time 21:45:19 (UTC) in region 9 km SE Maletto (CT)

A magnitude ML 2.4 earthquake occured in region: 9 km SE Maletto (CT), on

  • 23-12-2009 21:45:19 (UTC)
  • 23-12-2009 22:45:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7850, 14.9480 at 33 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
Maletto CT 9 3920 3920
Bronte CT 10 19172 23092
Randazzo CT 11 10900 33992
Santa Domenica Vittoria ME 15 980 34972
Maniace CT 15 3765 38737
Moio Alcantara ME 16 717 39454
Milo CT 16 1087 40541
Adrano CT 17 36122 76663
Zafferana Etnea CT 17 9517 86180
Ragalna CT 17 3924 90104
Biancavilla CT 17 24007 114111
Roccella Valdemone ME 17 666 114777
Malvagna ME 18 733 115510
Sant'Alfio CT 18 1582 117092
Linguaglossa CT 18 5403 122495
Castiglione di Sicilia CT 19 3215 125710
Santa Maria di Licodia CT 19 7641 133351
Santa Venerina CT 20 8592 141943

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Acireale (52622 inhabitants)
34 Km NW of Catania (314555 inhabitants)
70 Km SW of Messina (238439 inhabitants)
71 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km E of Caltanissetta (63360 inhabitants)
86 Km NW of Siracusa (122291 inhabitants)
97 Km N of Ragusa (73313 inhabitants)
100 Km NE of Vittoria (63339 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 2.4 2009-12-23
21:45:19		 37.785 14.948 33 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1001629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-12-23 21:45:19 ± 0.12
Latitude 37.7850 ± 0.0054
Longitude 14.9480 ± 0.0137
Depth (km) 33 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1001629

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1028
Semi-minor axis of confidence ellipse (meter) 562
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 1341.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.91821
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 10
Magnitude information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1001629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 19:11:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHE. 2009-12-23T21:45:47.02 0.6 undecidable manual Sg 170 92.8404 0.008 48
IV.SSY.HHN. 2009-12-23T21:45:41.53 0.6 undecidable manual Sg 171 70.4739 0.21 49
IV.HVZN.HHE. 2009-12-23T21:45:41.65 0.3 undecidable manual Sg 197 70.374 0.357 71
IV.IVPL.HHZ. 2009-12-23T21:45:40.30 0.3 undecidable manual Sg 2 65.6898 0.166 75
IV.AGST.EHE. 2009-12-23T21:45:39.91 0.6 undecidable manual Sg 157 63.5919 0.299 49
IV.HCRL.HHE. 2009-12-23T21:45:37.75 0.3 undecidable manual Sg 172 56.1993 -0.056 77
IV.SOI.EHE. 2009-12-23T21:45:36.84 0.3 undecidable manual Pg 71 101.9202 0.519 63
IV.HAVL.HHE. 2009-12-23T21:45:34.80 0.3 undecidable manual Pg 170 92.8404 -0.378 68
IV.GALF.HHZ. 2009-12-23T21:45:33.17 0.6 undecidable manual Sg 256 34.4433 0.274 52
IV.HVZN.HHE. 2009-12-23T21:45:32.04 0.3 undecidable manual Pg 197 70.374 0.169 74
IV.MSRU.HHN. 2009-12-23T21:45:32.26 0.3 undecidable manual Pg 42 72.2721 0.108 75
IV.SSY.HHN. 2009-12-23T21:45:31.67 0.1 undecidable manual Pg 171 70.4739 -0.216 97
IV.ECNV.HHZ. 2009-12-23T21:45:31.75 0.6 undecidable manual Sg 225 29.4483 -0.158 52
IV.IVPL.HHZ. 2009-12-23T21:45:31.06 0.3 undecidable manual Pg 2 65.6898 -0.138 75
IV.AGST.EHE. 2009-12-23T21:45:30.55 0.1 undecidable manual Pg 157 63.5919 -0.351 95
IV.HCRL.HHE. 2009-12-23T21:45:29.48 0.1 undecidable manual Pg 172 56.1993 -0.381 96
IV.ECNV.HHZ. 2009-12-23T21:45:27.13 0.3 undecidable manual Pg 225 29.4483 0.68 70
IV.GALF.HHZ. 2009-12-23T21:45:26.65 0.1 undecidable manual Pg 256 34.4433 -0.376 100
IV.MTGR.SHZ. 2009-12-23T21:44:52.40 10.0 undecidable manual Pg 0 0 0
IV.CRAC.EHZ. 2009-12-23T21:44:39.79 10.0 undecidable manual Pg 0 0 0
IV.STR4.BHE. 2009-12-23T21:44:33.43 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHN. 2009-12-23T21:44:32.25 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