Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 03-12-2012 and time 22:10:24 (Italy) in region 9 km SE Randazzo (CT)

A magnitude ML 2.5 earthquake occured in region: 9 km SE Randazzo (CT), on

  • 03-12-2012 21:10:24 (UTC)
  • 03-12-2012 22:10:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8130, 15.0010 at 30 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
Randazzo CT 9 10900 10900
Moio Alcantara ME 11 717 11617
Maletto CT 12 3920 15537
Santa Domenica Vittoria ME 12 980 16517
Malvagna ME 13 733 17250
Linguaglossa CT 13 5403 22653
Castiglione di Sicilia CT 13 3215 25868
Roccella Valdemone ME 14 666 26534
Milo CT 14 1087 27621
Sant'Alfio CT 15 1582 29203
Bronte CT 15 19172 48375
Francavilla di Sicilia ME 16 3945 52320
Piedimonte Etneo CT 16 3963 56283
Zafferana Etnea CT 16 9517 65800
Motta Camastra ME 18 845 66645
Maniace CT 18 3765 70410
Mascali CT 18 14282 84692
Fiumefreddo di Sicilia CT 18 9623 94315
Santa Venerina CT 19 8592 102907
Giarre CT 19 27659 130566

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Acireale (52622 inhabitants)
35 Km N of Catania (314555 inhabitants)
65 Km SW of Messina (238439 inhabitants)
65 Km SW of Reggio di Calabria (183035 inhabitants)
88 Km N of Siracusa (122291 inhabitants)
90 Km E of Caltanissetta (63360 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 2.5 2012-12-03
21:10:24		 37.8128 15.0007 30 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 3670741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-12-03 21:10:24 ± 0.3
Latitude 37.8128 ± 0.0117
Longitude 15.0007 ± 0.0205
Depth (km) 30 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3670741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1863
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 116
Circular confidence region, given by single value of horizontal uncertainty (meter) 1860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.12141
Epicentral distance of station farthest from the epicenter (degree) 0.65740
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations 1
Type of magnitude ML
Reference to an origin 3670741
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:46:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2012-12-03T21:10:47.90 0.6 undecidable manual S 175 72.9714 107 0.25 48
IV.AGST.EHZ. 2012-12-03T21:10:46.00 0.6 undecidable manual S 162 64.8906 109 0.41 47
IV.MSRU.HHZ. 2012-12-03T21:10:46.90 0.6 undecidable manual S 41 66.8775 109 0.8 40
IV.HCRL.HHE. 2012-12-03T21:10:44.19 0.6 undecidable manual S 177 58.7967 111 0.1 51
IV.MPNC.HHE. 2012-12-03T21:10:41.40 0.6 undecidable manual S 40 48.1185 116 -0.08 52
IV.GALF.HHE. 2012-12-03T21:10:39.87 0.6 undecidable manual S 254 39.7269 122 0.36 49
IV.MSRU.HHZ. 2012-12-03T21:10:37.81 0.1 undecidable manual P 41 66.8775 109 0.65 87
IV.SSY.HHZ. 2012-12-03T21:10:37.70 0.1 undecidable manual P 175 72.9714 107 -0.36 93
IV.AGST.EHZ. 2012-12-03T21:10:36.58 0.3 undecidable manual P 162 64.8906 109 -0.29 72
IV.AIO.HHZ. 2012-12-03T21:10:36.30 0.6 undecidable manual S 49 26.8509 134 -0.49 50
IV.HCRL.HHE. 2012-12-03T21:10:35.46 0.3 undecidable manual P 177 58.7967 111 -0.54 68
IV.CAGR.HHE. 2012-12-03T21:10:35.02 0.3 undecidable manual P 244 48.8178 116 0.44 72
IV.MPNC.HHE. 2012-12-03T21:10:34.07 0.3 undecidable manual P 40 48.1185 116 -0.43 73
IV.SN1.HHE. 2012-12-03T21:10:34.78 0.3 undecidable manual P 130 45.621 118 0.63 69
IV.GALF.HHE. 2012-12-03T21:10:32.67 0.1 undecidable manual P 254 39.7269 122 -0.69 90
IV.ECNV.HHE. 2012-12-03T21:10:32.97 0.6 undecidable manual P 226 34.9428 126 0.22 52
IV.AIO.HHZ. 2012-12-03T21:10:31.32 0.1 positive manual P 49 26.8509 134 -0.47 100
IV.ESLN.HHE. 2012-12-03T21:10:31.00 0.3 undecidable manual P 190 13.4754 153 0.45 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSY.HHE. ML:2.3 0.0003085 0.72 AML other m 2012-12-03T21:10:49.29
IV.SSY.HHN. ML:2.6 0.0006205000000000001 1.16 AML other m 2012-12-03T21:10:50.95
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