Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 30-12-2012 and time 16:16:37 (UTC) in region 6 km NE Ragalna (CT)

A magnitude ML 2.0 earthquake occured in region: 6 km NE Ragalna (CT), on

  • 30-12-2012 16:16:37 (UTC)
  • 30-12-2012 17:16:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6740, 14.9730 at 19 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
Ragalna CT 6 3924 3924
Nicolosi CT 8 7463 11387
Belpasso CT 9 28108 39495
Biancavilla CT 10 24007 63502
Santa Maria di Licodia CT 10 7641 71143
Pedara CT 10 14102 85245
Trecastagni CT 11 10910 96155
Zafferana Etnea CT 12 9517 105672
San Pietro Clarenza CT 12 7743 113415
Camporotondo Etneo CT 12 5023 118438
Paternò CT 12 48228 166666
Adrano CT 12 36122 202788
Viagrande CT 13 8563 211351
Mascalucia CT 13 31958 243309
Milo CT 14 1087 244396
Tremestieri Etneo CT 14 20589 264985
Aci Bonaccorsi CT 15 3524 268509
Santa Venerina CT 15 8592 277101
Gravina di Catania CT 15 25838 302939
San Giovanni la Punta CT 15 23060 325999
Aci Sant'Antonio CT 16 17984 343983
Sant'Agata li Battiati CT 16 9479 353462
Aci Catena CT 17 29851 383313
Valverde CT 17 7840 391153
San Gregorio di Catania CT 17 11966 403119
Sant'Alfio CT 17 1582 404701
Misterbianco CT 17 49410 454111
Bronte CT 18 19172 473283
Motta Sant'Anastasia CT 18 12116 485399
Acireale CT 18 52622 538021
Giarre CT 20 27659 565680
Maletto CT 20 3920 569600

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km W of Acireale (52622 inhabitants)
22 Km NW of Catania (314555 inhabitants)
74 Km NW of Siracusa (122291 inhabitants)
76 Km SW of Reggio di Calabria (183035 inhabitants)
77 Km SW of Messina (238439 inhabitants)
83 Km E of Caltanissetta (63360 inhabitants)
86 Km N of Ragusa (73313 inhabitants)
89 Km NE of Vittoria (63339 inhabitants)
92 Km N of Modica (54633 inhabitants)
93 Km NE of Gela (75827 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
Reviewed
Rev100 		ML 2.1 2012-12-30
16:16:37		 37.6907 15.0372 16 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2771251
Reviewed
Rev200 		ML 1.9 2012-12-30
16:16:37		 37.669 14.952 15 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2771261
Bulletin
Rev1000 		ML 2.0 2012-12-30
16:16:37		 37.6742 14.9727 19 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 3561481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-12-30 16:16:37 ± 0.17
Latitude 37.6742 ± 0.0054
Longitude 14.9727 ± 0.0159
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3561481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1335
Semi-minor axis of confidence ellipse (meter) 518
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 1330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.72395
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 2771251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-12-30 20:13:15

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 3561481
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:46:32

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 2771261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-12-30 20:14:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2012-12-30T16:17:02.10 0.3 undecidable manual S 171 80.364 97 0.61 60
IV.SSY.HHZ. 2012-12-30T16:16:56.30 0.3 undecidable manual S 171 57.9975 100 0.72 60
IV.AGST.EHE. 2012-12-30T16:16:54.30 0.6 undecidable manual S 154 51.4152 102 0.43 45
IV.HCRL.HHZ. 2012-12-30T16:16:52.30 0.6 undecidable manual S 173 43.7229 104 0.45 45
IV.HAGA.HHZ. 2012-12-30T16:16:52.80 0.6 undecidable manual S 160 46.0206 103 0.34 46
IV.HAVL.HHZ. 2012-12-30T16:16:51.07 0.1 negative manual P 171 80.364 97 -0.27 88
IV.MNO.SHZ. 2012-12-30T16:16:51.10 0.3 undecidable manual S 320 37.4292 107 0.84 59
IV.MUCR.HHZ. 2012-12-30T16:16:51.70 0.3 undecidable manual S 348 41.8248 105 0.32 70
IV.HLNI.HHZ. 2012-12-30T16:16:50.10 0.6 undecidable manual S 194 37.2294 108 -0.08 50
IV.SSY.HHZ. 2012-12-30T16:16:47.71 0.1 undecidable manual P 171 57.9975 100 -0.21 93
IV.AGST.EHE. 2012-12-30T16:16:46.57 0.3 undecidable manual P 154 51.4152 102 -0.37 68
IV.MCSR.HHE. 2012-12-30T16:16:46.63 0.3 undecidable manual P 27 48.8178 102 0.08 73
IV.HCRL.HHZ. 2012-12-30T16:16:45.26 0.1 undecidable manual P 173 43.7229 104 -0.51 89
IV.HAGA.HHZ. 2012-12-30T16:16:45.66 0.1 undecidable manual P 160 46.0206 103 -0.47 90
IV.NOV.HHE. 2012-12-30T16:16:45.46 0.3 undecidable manual P 20 41.8248 105 -0.03 75
IV.MUCR.HHZ. 2012-12-30T16:16:45.33 0.1 undecidable manual P 348 41.8248 105 -0.17 97
IV.SN1.HHE. 2012-12-30T16:16:45.95 0.3 undecidable manual P 110 39.8268 106 0.74 62
IV.AIO.HHE. 2012-12-30T16:16:45.27 0.3 undecidable manual P 35 40.1265 106 0.03 75
IV.GALF.HHZ. 2012-12-30T16:16:44.67 0.1 undecidable manual P 277 35.8419 108 0.05 100
IV.HLNI.HHZ. 2012-12-30T16:16:44.18 0.1 positive manual P 194 37.2294 108 -0.63 87
IV.MNO.SHZ. 2012-12-30T16:16:44.97 0.1 undecidable manual P 320 37.4292 107 0.12 99
IV.ESLN.HHZ. 2012-12-30T16:16:43.10 0.6 undecidable manual S 4 2.1978 173 -0.37 50
IV.ECNV.HHE. 2012-12-30T16:16:43.90 0.6 undecidable manual P 249 24.4533 119 0.9 39
IV.ESLN.HHZ. 2012-12-30T16:16:40.33 0.1 undecidable manual P 4 2.1978 173 -0.61 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHE. ML:2.1 0.0010065 1.14 AML other m 2012-12-30T16:16:43.63
IV.ESLN.HHN. ML:2.0 0.0009239999999999999 0.66 AML other m 2012-12-30T16:16:43.47
IV.GALF.HHE. ML:1.5 0.0001212 0.58 AML other m 2012-12-30T16:16:56.02
IV.GALF.HHN. ML:1.7 0.000178 0.58 AML other m 2012-12-30T16:16:57.21
IV.SSY.HHE. ML:2.0 0.00022 0.92 AML other m 2012-12-30T16:16:57.62
IV.SSY.HHN. ML:2.4 0.000455 1.24 AML other m 2012-12-30T16:16:59.21
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