Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 23-12-2009 and time 15:56:05 (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 15:56:05 (UTC)
  • 23-12-2009 16:56:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7860, 14.9560 at 34 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
Randazzo CT 10 10900 14820
Bronte CT 11 19172 33992
Santa Domenica Vittoria ME 15 980 34972
Moio Alcantara ME 15 717 35689
Maniace CT 16 3765 39454
Milo CT 16 1087 40541
Zafferana Etnea CT 16 9517 50058
Roccella Valdemone ME 17 666 50724
Malvagna ME 17 733 51457
Sant'Alfio CT 17 1582 53039
Ragalna CT 17 3924 56963
Adrano CT 17 36122 93085
Biancavilla CT 18 24007 117092
Linguaglossa CT 18 5403 122495
Castiglione di Sicilia CT 18 3215 125710
Santa Venerina CT 20 8592 134302
Piedimonte Etneo CT 20 3963 138265
Santa Maria di Licodia CT 20 7641 145906
Nicolosi CT 20 7463 153369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Acireale (52622 inhabitants)
33 Km NW of Catania (314555 inhabitants)
70 Km SW of Messina (238439 inhabitants)
70 Km SW of Reggio di Calabria (183035 inhabitants)
85 Km E of Caltanissetta (63360 inhabitants)
86 Km NW of Siracusa (122291 inhabitants)
98 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
15:56:05		 37.786 14.956 34 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1001459
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-12-23 15:56:05 ± 0.12
Latitude 37.7860 ± 0.0054
Longitude 14.9560 ± 0.0091
Depth (km) 34 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1001459

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 604
Semi-minor axis of confidence ellipse (meter) 580
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 86
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) 102
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.83637
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 11
Magnitude information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1001459
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 19:11:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.BLY.HHZ. 2009-12-23T15:56:46.34 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHN. 2009-12-23T15:56:33.68 0.3 undecidable manual Sg 171 92.8404 0.065 68
IV.CSLB.SHZ. 2009-12-23T15:56:32.54 10.0 undecidable manual Sg 0 0 0
IV.HVZN.HHZ. 2009-12-23T15:56:28.32 0.6 undecidable manual Sg 198 70.6737 0.174 47
IV.SSY.HHN. 2009-12-23T15:56:28.49 0.6 undecidable manual Sg 172 70.4739 0.392 44
IV.IVPL.HHN. 2009-12-23T15:56:27.06 0.6 undecidable manual Sg 2 65.49 0.202 47
IV.HCRL.HHE. 2009-12-23T15:56:24.59 0.3 undecidable manual Sg 173 56.1993 -0.014 74
IV.HAVL.HHN. 2009-12-23T15:56:21.62 0.3 undecidable manual Pg 171 92.8404 -0.192 67
IV.GIB.HHN. 2009-12-23T15:56:20.81 0.6 undecidable manual Pg 286 84.5487 0.139 46
IV.CSLB.SHZ. 2009-12-23T15:56:20.86 10.0 undecidable manual Pg 0 0 0
IV.MTTG.HHN. 2009-12-23T15:56:19.01 0.3 undecidable manual Pg 69 69.375 0.539 64
IV.GALF.HHZ. 2009-12-23T15:56:19.82 0.3 undecidable manual Sg 256 35.2425 -0.053 76
IV.MSRU.HHE. 2009-12-23T15:56:19.17 0.3 undecidable manual Pg 42 71.6727 0.375 67
IV.ECNV.HHZ. 2009-12-23T15:56:18.89 0.6 undecidable manual Sg 225 30.0477 0.027 52
IV.HVZN.HHZ. 2009-12-23T15:56:18.44 0.3 undecidable manual Pg 198 70.6737 -0.215 69
IV.SSY.HHN. 2009-12-23T15:56:18.56 0.3 undecidable manual Pg 172 70.4739 -0.069 72
IV.MMME.HHZ. 2009-12-23T15:56:18.89 0.3 undecidable manual Sg 58 30.8469 -0.125 76
IV.IVPL.HHN. 2009-12-23T15:56:17.62 0.3 undecidable manual Pg 2 65.49 -0.29 68
IV.HCRL.HHE. 2009-12-23T15:56:16.26 0.1 undecidable manual Pg 173 56.1993 -0.349 93
IV.MMME.HHZ. 2009-12-23T15:56:13.02 0.1 undecidable manual Pg 58 30.8469 -0.365 97
IV.GALF.HHZ. 2009-12-23T15:56:13.77 0.1 undecidable manual Pg 256 35.2425 -0.11 100
IV.ECNV.HHZ. 2009-12-23T15:56:13.89 0.3 undecidable manual Pg 225 30.0477 0.594 68
IV.PIEI.HHN. 2009-12-23T15:56:05.55 10.0 undecidable manual Pg 0 0 0
IV.ILLI.HHZ. 2009-12-23T15:55:56.22 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