Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 11-09-2013 and time 04:28:45 (UTC) in region 7 km SE Randazzo (CT)

A magnitude ML 2.3 earthquake occured in region: 7 km SE Randazzo (CT), on

  • 11-09-2013 04:28:45 (UTC)
  • 11-09-2013 06:28:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8240, 14.9850 at 28 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 7 10900 10900
Moio Alcantara ME 10 717 11617
Maletto CT 10 3920 15537
Santa Domenica Vittoria ME 11 980 16517
Malvagna ME 12 733 17250
Roccella Valdemone ME 12 666 17916
Castiglione di Sicilia CT 14 3215 21131
Bronte CT 14 19172 40303
Linguaglossa CT 14 5403 45706
Francavilla di Sicilia ME 16 3945 49651
Milo CT 16 1087 50738
Maniace CT 16 3765 54503
Sant'Alfio CT 17 1582 56085
Piedimonte Etneo CT 17 3963 60048
Zafferana Etnea CT 18 9517 69565
Motta Camastra ME 18 845 70410
Floresta ME 19 485 70895
Mascali CT 20 14282 85177

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Acireale (52622 inhabitants)
37 Km N of Catania (314555 inhabitants)
65 Km SW of Messina (238439 inhabitants)
66 Km SW of Reggio di Calabria (183035 inhabitants)
89 Km E of Caltanissetta (63360 inhabitants)
89 Km N of Siracusa (122291 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 2.3 2013-09-11
04:28:45		 37.8242 14.9848 28 2015-01-20
11:28:57		 Bollettino Sismico Italiano INGV 4867511
Reviewed
Rev100 		ML 2.2 2013-09-11
04:28:45		 37.831 14.9892 29 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 4469231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-09-11 04:28:45 ± 0.13
Latitude 37.8242 ± 0.0045
Longitude 14.9848 ± 0.0091
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4867511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 770
Semi-minor axis of confidence ellipse (meter) 339
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 98
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.05490
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 4469231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-09-11 04:39:04

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 19
Type of magnitude ML
Reference to an origin 4867511
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:05:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.WDD.HHZ. 2013-09-11T04:29:45.99 3.0 undecidable manual Sg 3.47 0
IV.HMDC.HHZ. 2013-09-11T04:29:14.94 0.3 undecidable manual S 191 97.6245 101 0.04 65
IV.SSY.HHZ. 2013-09-11T04:29:09.10 0.6 undecidable manual S 174 74.37 105 0.25 43
IV.AGST.EHZ. 2013-09-11T04:29:06.99 0.3 undecidable manual S 161 66.4779 107 0.16 67
IV.JOPP.HHZ. 2013-09-11T04:29:05.13 0.6 undecidable manual P 42 117.0939 99 -0.49 39
IV.HCRL.HHZ. 2013-09-11T04:29:05.15 0.3 undecidable manual S 176 60.1953 109 -0.08 70
IV.HAGA.HHZ. 2013-09-11T04:29:05.74 0.6 undecidable manual S 166 61.6938 109 0.13 46
IV.SOI.EHZ. 2013-09-11T04:29:03.32 0.6 undecidable manual P 73 97.5246 101 0.66 36
IV.MPNC.HHZ. 2013-09-11T04:29:02.78 0.6 undecidable manual S 42 48.1185 114 0.55 42
IV.HMDC.HHZ. 2013-09-11T04:29:02.52 0.6 undecidable manual P 191 97.6245 101 -0.15 43
IV.HAVL.HHZ. 2013-09-11T04:29:02.05 0.3 undecidable manual P 173 96.6255 101 -0.47 60
IV.HBSP.HHZ. 2013-09-11T04:29:01.05 0.3 undecidable manual P 209 88.6446 102 -0.27 63
IV.MCPD.HHZ. 2013-09-11T04:29:00.03 0.3 undecidable manual S 326 39.627 119 -0.18 70
IV.MSRU.HHZ. 2013-09-11T04:28:58.37 0.6 undecidable manual P 43 66.8775 107 0.31 43
IV.SSY.HHZ. 2013-09-11T04:28:58.95 0.3 undecidable manual P 174 74.37 105 -0.22 66
IV.MUCR.HHZ. 2013-09-11T04:28:57.19 0.3 undecidable manual S 338 26.1516 132 -0.09 73
IV.HAGA.HHZ. 2013-09-11T04:28:57.05 0.3 undecidable manual P 166 61.6938 109 -0.25 67
IV.AGST.EHZ. 2013-09-11T04:28:57.65 0.1 negative manual P 161 66.4779 107 -0.36 87
IV.IVPL.HHZ. 2013-09-11T04:28:57.52 0.3 undecidable manual P 360 61.2942 109 0.28 67
IV.AIO.HHZ. 2013-09-11T04:28:57.63 0.6 undecidable manual S 53 27.1506 131 0.14 48
IV.NOV.HHZ. 2013-09-11T04:28:56.94 0.1 undecidable manual S 30 26.1516 132 -0.35 93
IV.HCRL.HHZ. 2013-09-11T04:28:56.84 0.1 negative manual P 176 60.1953 109 -0.24 90
IV.MPNC.HHZ. 2013-09-11T04:28:55.52 0.1 positive manual P 42 48.1185 114 0.17 93
IV.GALF.HHZ. 2013-09-11T04:28:54.54 0.1 positive manual P 251 38.8278 120 0.47 90
IV.MCPD.HHZ. 2013-09-11T04:28:54.02 0.1 negative manual P 326 39.627 119 -0.16 94
IV.MSFR.HHZ. 2013-09-11T04:28:54.48 0.1 negative manual P 304 41.5251 118 0.04 97
IV.ECNV.HHZ. 2013-09-11T04:28:54.73 0.6 undecidable manual P 223 34.8429 123 1.17 34
IV.ESML.HHE. 2013-09-11T04:28:52.85 0.3 undecidable manual P 202 24.6531 134 0.52 68
IV.EPOZ.HHZ. 2013-09-11T04:28:52.76 0.3 undecidable manual P 133 24.5532 134 0.44 68
IV.MUCR.HHZ. 2013-09-11T04:28:52.19 0.1 negative manual P 338 26.1516 132 -0.3 94
IV.NOV.HHZ. 2013-09-11T04:28:52.37 0.1 positive manual P 30 26.1516 132 -0.13 98
IV.MNO.SHZ. 2013-09-11T04:28:52.83 0.3 undecidable manual P 295 28.0497 130 0.12 74
IV.AIO.HHZ. 2013-09-11T04:28:52.59 0.1 positive manual P 53 27.1506 131 -0.02 100
IV.ESLN.HHE. 2013-09-11T04:28:51.02 0.3 undecidable manual P 184 14.5743 150 -0.34 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AGST.EHE. ML:2.2 0.000257 0.26 AML other m 2013-09-11T04:29:07.84
IV.AGST.EHN. ML:2.2 0.0002595 0.48 AML other m 2013-09-11T04:29:07.74
IV.AIO.HHE. ML:2.3 0.0006839999999999999 0.4 AML other m 2013-09-11T04:28:58.02
IV.AIO.HHN. ML:2.4 0.0010550000000000002 0.24 AML other m 2013-09-11T04:28:58.21
IV.EPOZ.HHN. ML:2.3 0.0007889999999999999 0.22 AML other m 2013-09-11T04:29:01.58
IV.EPOZ.HHE. ML:2.2 0.000672 1.58 AML other m 2013-09-11T04:29:05.14
IV.GALF.HHN. ML:2.0 0.000297 0.6 AML other m 2013-09-11T04:29:02.77
IV.GALF.HHE. ML:2.1 0.000325 0.46 AML other m 2013-09-11T04:29:02.54
IV.HAGA.HHN. ML:2.4 0.00040100000000000004 0.32 AML other m 2013-09-11T04:29:06.38
IV.HAGA.HHE. ML:2.2 0.000315 0.58 AML other m 2013-09-11T04:29:06.31
IV.HAVL.HHN. ML:2.5 0.000289 1.52 AML other m 2013-09-11T04:29:15.55
IV.HAVL.HHE. ML:2.4 0.00022600000000000002 0.18 AML other m 2013-09-11T04:29:17.50
IV.HBSP.HHE. ML:2.8 0.0007084999999999999 0.66 AML other m 2013-09-11T04:29:14.13
IV.HBSP.HHN. ML:2.5 0.0003415 0.14 AML other m 2013-09-11T04:29:14.02
IV.HCRL.HHE. ML:2.3 0.000365 0.74 AML other m 2013-09-11T04:29:05.59
IV.HCRL.HHN. ML:2.4 0.0004125 0.28 AML other m 2013-09-11T04:29:05.65
IV.HMDC.HHE. ML:2.7 0.0004505 1.08 AML other m 2013-09-11T04:29:16.01
IV.HMDC.HHN. ML:2.8 0.0005905 0.58 AML other m 2013-09-11T04:29:15.47
IV.IVPL.HHE. ML:2.8 0.0010015 0.52 AML other m 2013-09-11T04:29:08.34
IV.IVPL.HHN. ML:2.6 0.000796 1.04 AML other m 2013-09-11T04:29:11.22
IV.JOPP.HHN. ML:1.8 0.00005165 0.48 AML other m 2013-09-11T04:29:22.53
IV.JOPP.HHE. ML:1.7 0.000035699999999999994 0.22 AML other m 2013-09-11T04:29:24.72
IV.MCPD.HHN. ML:1.7 0.000143 0.34 AML other m 2013-09-11T04:29:02.34
IV.MCPD.HHE. ML:1.7 0.0001515 0.34 AML other m 2013-09-11T04:29:00.45
IV.MNO.SHN. ML:2.1 0.000447 0.8 AML other m 2013-09-11T04:28:58.73
IV.MNO.SHE. ML:2.0 0.000366 0.32 AML other m 2013-09-11T04:29:01.91
IV.MPNC.HHE. ML:2.3 0.00048450000000000007 0.66 AML other m 2013-09-11T04:29:03.94
IV.MPNC.HHN. ML:2.3 0.0004355 0.66 AML other m 2013-09-11T04:29:06.52
IV.MSFR.HHE. ML:1.7 0.00014250000000000002 0.74 AML other m 2013-09-11T04:29:01.41
IV.MSFR.HHN. ML:1.6 0.00010655 1.12 AML other m 2013-09-11T04:29:02.75
IV.MSRU.HHE. ML:2.3 0.0003285 0.98 AML other m 2013-09-11T04:29:10.10
IV.MSRU.HHN. ML:2.2 0.0002775 0.24 AML other m 2013-09-11T04:29:09.42
IV.MUCR.HHE. ML:2.0 0.00035749999999999996 0.64 AML other m 2013-09-11T04:28:57.60
IV.MUCR.HHN. ML:2.0 0.0003935 0.32 AML other m 2013-09-11T04:28:58.92
IV.NOV.HHE. ML:2.5 0.00121 0.44 AML other m 2013-09-11T04:28:57.16
IV.NOV.HHN. ML:2.3 0.000701 0.36 AML other m 2013-09-11T04:28:59.12
IV.SSY.HHE. ML:2.5 0.000423 1.56 AML other m 2013-09-11T04:29:11.30
IV.SSY.HHN. ML:2.7 0.0007045 1.14 AML other m 2013-09-11T04:29:14.41
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