Earthquake with magnitude of ML 2.5 on date 23-12-2008 and time 00:57:07 (Italy) in region 2 km NE Sant'Alfio (CT)

A magnitude ML 2.5 earthquake occured in region: 2 km NE Sant'Alfio (CT), on

  • 22-12-2008 23:57:07 (UTC)
  • 23-12-2008 00:57:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7610, 15.1560 at 3 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
Sant'Alfio CT 2 1582 1582
Mascali CT 4 14282 15864
Giarre CT 4 27659 43523
Milo CT 5 1087 44610
Riposto CT 5 14838 59448
Piedimonte Etneo CT 6 3963 63411
Fiumefreddo di Sicilia CT 6 9623 73034
Santa Venerina CT 8 8592 81626
Zafferana Etnea CT 9 9517 91143
Linguaglossa CT 9 5403 96546
Calatabiano CT 10 5308 101854
Gaggi ME 13 3184 105038
Castiglione di Sicilia CT 14 3215 108253
Giardini-Naxos ME 14 9415 117668
Taormina ME 15 10960 128628
Motta Camastra ME 15 845 129473
Castelmola ME 15 1088 130561
Francavilla di Sicilia ME 16 3945 134506
Graniti ME 16 1492 135998
Acireale CT 17 52622 188620
Trecastagni CT 17 10910 199530
Aci Sant'Antonio CT 17 17984 217514
Viagrande CT 17 8563 226077
Aci Catena CT 18 29851 255928
Pedara CT 18 14102 270030
Moio Alcantara ME 18 717 270747
Aci Bonaccorsi CT 19 3524 274271
Letojanni ME 19 2861 277132
Mongiuffi Melia ME 19 600 277732
Malvagna ME 20 733 278465
Nicolosi CT 20 7463 285928
Gallodoro ME 20 367 286295

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km N of Acireale (52622 inhabitants)
29 Km N of Catania (314555 inhabitants)
58 Km SW of Reggio di Calabria (183035 inhabitants)
60 Km SW of Messina (238439 inhabitants)
79 Km N of Siracusa (122291 inhabitants)
100 Km NE of Ragusa (73313 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 2.6
ML 2.5
2008-12-22
23:57:07
37.761 15.156 3 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 733589
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2008-12-22 23:57:07 ± 0.73
Latitude 37.7610 ± 0.0441
Longitude 15.1560 ± 0.0557
Depth (km) 3 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 733589

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6895
Semi-minor axis of confidence ellipse (meter) 842
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 315
Circular confidence region, given by single value of horizontal uncertainty (meter) 6929.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 221
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63042
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 733589
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 13:52:36

Md:2.6

Field Value
Value 2.6
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 733589
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 13:52:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MNO.SHE. 2008-12-22T23:57:22.74 10.0 undecidable manual Pg 0 0 0
IV.IVPL.BHZ. 2008-12-22T23:57:20.61 0.6 undecidable manual Pg 347 69.9744 -0.195 47
IV.GALF.HHZ. 2008-12-22T23:57:18.33 0.3 undecidable manual Pg 264 52.0035 0.328 71
IV.MMME.BHZ. 2008-12-22T23:57:14.58 0.6 undecidable manual Sg 24 21.1677 -0.406 49
IV.ESLN.BHZ. 2008-12-22T23:57:13.81 0.3 undecidable manual Sg 245 17.5713 0.057 79
IV.MMME.BHZ. 2008-12-22T23:57:12.31 0.3 undecidable manual Pg 24 21.1677 0.465 72
IV.ESLN.BHZ. 2008-12-22T23:57:10.82 0.1 undecidable manual Pg 245 17.5713 -0.318 100
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
Waveforms Seismic signals in miniseed + resp format Download