Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 28-09-2012 and time 06:17:17 (UTC) in region 11 km SE Maletto (CT)

A magnitude ML 2.0 earthquake occured in region: 11 km SE Maletto (CT), on

  • 28-09-2012 06:17:17 (UTC)
  • 28-09-2012 08:17:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7660, 14.9680 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
Maletto CT 11 3920 3920
Bronte CT 12 19172 23092
Randazzo CT 13 10900 33992
Milo CT 14 1087 35079
Zafferana Etnea CT 14 9517 44596
Ragalna CT 15 3924 48520
Sant'Alfio CT 16 1582 50102
Biancavilla CT 16 24007 74109
Adrano CT 17 36122 110231
Moio Alcantara ME 17 717 110948
Santa Domenica Vittoria ME 17 980 111928
Santa Venerina CT 17 8592 120520
Nicolosi CT 18 7463 127983
Maniace CT 18 3765 131748
Linguaglossa CT 18 5403 137151
Santa Maria di Licodia CT 18 7641 144792
Pedara CT 18 14102 158894
Malvagna ME 19 733 159627
Castiglione di Sicilia CT 19 3215 162842
Roccella Valdemone ME 19 666 163508
Piedimonte Etneo CT 19 3963 167471
Trecastagni CT 19 10910 178381
Belpasso CT 19 28108 206489
Giarre CT 20 27659 234148

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NW of Acireale (52622 inhabitants)
31 Km NW of Catania (314555 inhabitants)
70 Km SW of Messina (238439 inhabitants)
71 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km NW of Siracusa (122291 inhabitants)
85 Km E of Caltanissetta (63360 inhabitants)
96 Km N of Ragusa (73313 inhabitants)
98 Km NE of Vittoria (63339 inhabitants)
100 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 1.9 2012-09-28
06:17:17		 37.7622 14.9673 9 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2247911
Bulletin
Rev1000 		ML 2.0 2012-09-28
06:17:17		 37.7663 14.968 19 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 3055481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-09-28 06:17:17 ± 0.13
Latitude 37.7663 ± 0.0045
Longitude 14.9680 ± 0.0193
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 3055481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1763
Semi-minor axis of confidence ellipse (meter) 146
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 281
Circular confidence region, given by single value of horizontal uncertainty (meter) 1760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.82018
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 3055481
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:45:14

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 2247911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-09-28 06:26:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2012-09-28T06:17:45.18 0.3 undecidable manual S 190 91.0422 96 0.83 53
IV.HAVL.HHZ. 2012-09-28T06:17:44.50 0.6 undecidable manual S 171 90.5427 96 0.29 42
IV.MEU.SHZ. 2012-09-28T06:17:39.63 0.6 undecidable manual S 190 73.6707 97 -0.12 45
IV.SSY.HHZ. 2012-09-28T06:17:38.86 0.6 undecidable manual S 172 68.1762 98 0.57 41
IV.HCRL.HHZ. 2012-09-28T06:17:34.26 0.6 undecidable manual S 174 53.9016 101 -0.27 45
IV.HLNI.HHZ. 2012-09-28T06:17:32.82 0.6 undecidable manual S 190 47.1195 103 0.06 48
IV.HMDC.HHZ. 2012-09-28T06:17:32.68 0.3 undecidable manual P 190 91.0422 96 -0.32 62
IV.HAVL.HHZ. 2012-09-28T06:17:32.57 0.3 undecidable manual P 171 90.5427 96 -0.35 62
IV.HVZN.HHZ. 2012-09-28T06:17:30.07 0.6 undecidable manual P 199 68.8755 98 0.46 42
IV.NOV.HHZ. 2012-09-28T06:17:29.41 0.6 undecidable manual S 27 32.5452 110 0.39 45
IV.SSY.HHZ. 2012-09-28T06:17:29.42 0.3 undecidable manual P 172 68.1762 98 -0.08 68
IV.MEU.SHZ. 2012-09-28T06:17:29.93 0.3 undecidable manual P 190 73.6707 97 -0.41 63
IV.HCRL.HHZ. 2012-09-28T06:17:27.23 0.3 undecidable manual P 174 53.9016 101 -0.1 70
IV.MPNC.HHZ. 2012-09-28T06:17:27.30 0.3 undecidable manual P 38 54.0015 101 -0.04 71
IV.HLNI.HHZ. 2012-09-28T06:17:26.09 0.6 undecidable manual P 190 47.1195 103 -0.22 46
IV.MSFR.HHZ. 2012-09-28T06:17:26.03 0.3 undecidable manual P 312 44.3223 104 0.14 71
IV.MCSR.HHZ. 2012-09-28T06:17:25.23 0.1 undecidable manual P 35 40.2264 105 -0.05 97
IV.NOV.HHZ. 2012-09-28T06:17:24.17 0.1 undecidable manual P 27 32.5452 110 0.02 98
IV.ESLN.HHZ. 2012-09-28T06:17:21.05 0.1 undecidable manual P 176 8.0808 153 -0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAVL.HHN. ML:2.5 0.0003435 0.28 AML other m 2012-09-28T06:17:45.49
IV.HAVL.HHE. ML:2.3 0.00020850000000000003 1.4 AML other m 2012-09-28T06:17:46.33
IV.HCRL.HHE. ML:1.9 0.00017449999999999999 1.16 AML other m 2012-09-28T06:17:35.30
IV.HCRL.HHN. ML:2.0 0.000232 1.02 AML other m 2012-09-28T06:17:35.34
IV.HLNI.HHN. ML:1.8 0.00016999999999999999 0.58 AML other m 2012-09-28T06:17:33.24
IV.HLNI.HHE. ML:1.7 0.000123 0.22 AML other m 2012-09-28T06:17:34.24
IV.MCSR.HHE. ML:2.2 0.0004805 0.34 AML other m 2012-09-28T06:17:33.58
IV.MCSR.HHN. ML:2.1 0.00035749999999999996 0.3 AML other m 2012-09-28T06:17:36.71
IV.MPNC.HHN. ML:1.9 0.000186 0.44 AML other m 2012-09-28T06:17:37.02
IV.MPNC.HHE. ML:1.9 0.00017649999999999998 1.56 AML other m 2012-09-28T06:17:38.89
IV.MSFR.HHE. ML:1.2 0.0000455 1.58 AML other m 2012-09-28T06:17:36.43
IV.MSFR.HHN. ML:1.3 0.0000566 1 AML other m 2012-09-28T06:17:33.97
IV.NOV.HHE. ML:1.9 0.000315 0.6 AML other m 2012-09-28T06:17:29.96
IV.NOV.HHN. ML:1.8 0.0002595 0.9 AML other m 2012-09-28T06:17:30.27
IV.SSY.HHE. ML:2.0 0.000154 1.18 AML other m 2012-09-28T06:17:41.55
IV.SSY.HHN. ML:2.3 0.00035999999999999997 1.04 AML other m 2012-09-28T06:17:42.07
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