Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 21-11-2013 and time 02:52:28 (UTC) in region 6 km N Caltagirone (CT)

A magnitude ML 2.4 earthquake occured in region: 6 km N Caltagirone (CT), on

  • 21-11-2013 02:52:28 (UTC)
  • 21-11-2013 03:52:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.2900, 14.5010 at 27 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
Caltagirone CT 6 38686 38686
Mirabella Imbaccari CT 6 4912 43598
San Michele di Ganzaria CT 7 3245 46843
San Cono CT 12 2697 49540
Grammichele CT 15 13418 62958
Aidone EN 15 4889 67847
Piazza Armerina EN 16 21886 89733
Mineo CT 17 5159 94892
Niscemi CL 19 27558 122450

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NE of Gela (75827 inhabitants)
38 Km N of Vittoria (63339 inhabitants)
45 Km SE of Caltanissetta (63360 inhabitants)
45 Km NW of Ragusa (73313 inhabitants)
53 Km NW of Modica (54633 inhabitants)
57 Km W of Catania (314555 inhabitants)
69 Km SW of Acireale (52622 inhabitants)
75 Km W of Siracusa (122291 inhabitants)
81 Km E of Agrigento (59770 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 2.4 2013-11-21
02:52:28		 37.2897 14.5008 27 2015-01-20
11:29:51		 Bollettino Sismico Italiano INGV 8235561
Reviewed
Rev100 		ML 2.4 2013-11-21
02:52:28		 37.295 14.4922 27 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 4859491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-11-21 02:52:28 ± 0.11
Latitude 37.2897 ± 0.0081
Longitude 14.5008 ± 0.0068
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 8235561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 740
Semi-minor axis of confidence ellipse (meter) 574
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 201
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.12860
Epicentral distance of station farthest from the epicenter (degree) 1.26445
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 8235561
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:09:33

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 4859491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-11-21 02:59:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHZ. 2013-11-21T02:53:08.00 0.6 undecidable manual S 39 139.5603 54 0.6 37
IV.HPAC.HHZ. 2013-11-21T02:52:53.50 0.6 undecidable manual S 143 80.0643 103 0.85 37
IV.MSRU.HHZ. 2013-11-21T02:52:50.55 1.0 negative manual P 39 139.5603 54 -0.34 19
IV.MMGO.SHZ. 2013-11-21T02:52:50.82 0.6 negative manual P 288 140.3484 54 -0.17 41
IV.MPG.SHZ. 2013-11-21T02:52:50.88 1.0 positive manual P 314 139.1607 54 0.04 21
IV.HAVL.HHZ. 2013-11-21T02:52:49.20 0.6 undecidable manual S 123 65.9895 106 0.18 47
IV.AGST.EHZ. 2013-11-21T02:52:48.50 0.6 undecidable manual S 93 64.1913 107 -0.06 47
IV.MCPD.HHZ. 2013-11-21T02:52:44.26 0.6 positive manual P 12 94.3389 101 -0.26 43
IV.CLTA.HHE. 2013-11-21T02:52:44.14 0.6 undecidable manual S 253 49.8168 112 -0.79 42
IV.ALJA.HHE. 2013-11-21T02:52:43.52 0.3 undecidable manual P 308 83.1501 103 0.68 58
IV.HMDC.HHZ. 2013-11-21T02:52:43.80 0.6 undecidable manual S 146 44.3223 115 0.19 49
IV.MUCR.HHZ. 2013-11-21T02:52:43.69 0.6 positive manual P 21 89.7435 102 -0.14 45
IV.HPAC.HHZ. 2013-11-21T02:52:42.33 0.6 negative manual P 143 80.0643 103 -0.05 47
IV.MEU.SHZ. 2013-11-21T02:52:42.10 0.6 undecidable manual S 124 35.1426 122 0.65 44
IV.FAVR.HHE. 2013-11-21T02:52:41.88 0.3 undecidable manual P 268 73.6707 104 0.47 64
IV.EPOZ.HHZ. 2013-11-21T02:52:41.62 0.6 negative manual P 55 73.8705 104 0.17 47
IV.HLNI.HHZ. 2013-11-21T02:52:40.80 0.6 undecidable manual S 79 33.3444 123 -0.24 48
IV.RESU.HHE. 2013-11-21T02:52:39.27 0.6 undecidable manual P 316 55.6998 110 0.51 44
IV.HVZN.HHZ. 2013-11-21T02:52:39.30 0.6 undecidable manual S 123 22.6551 136 0.49 48
IV.AGST.EHZ. 2013-11-21T02:52:39.46 1.0 undecidable manual P 93 64.1913 107 -0.55 21
IV.HAVL.HHZ. 2013-11-21T02:52:39.96 0.1 positive manual P 123 65.9895 106 -0.32 91
IV.SSY.HHZ. 2013-11-21T02:52:38.16 0.1 positive manual P 106 52.7028 111 -0.17 96
IV.HBSP.HHZ. 2013-11-21T02:52:38.50 0.6 undecidable manual S 182 18.0708 142 0.49 47
IV.GALF.HHZ. 2013-11-21T02:52:37.48 0.1 negative manual P 7 47.0196 114 -0.05 99
IV.RAFF.HHE. 2013-11-21T02:52:37.88 0.3 undecidable manual S 239 14.2746 149 0.43 72
IV.CLTA.HHE. 2013-11-21T02:52:37.78 0.1 undecidable manual P 253 49.8168 112 -0.13 99
IV.CAGR.HHZ. 2013-11-21T02:52:36.37 0.6 positive manual P 360 36.8298 120 0.24 49
IV.HMDC.HHZ. 2013-11-21T02:52:36.92 1.0 undecidable manual P 146 44.3223 115 -0.23 24
IV.MEU.SHZ. 2013-11-21T02:52:35.54 1.0 undecidable manual P 124 35.1426 122 -0.36 24
IV.HLNI.HHZ. 2013-11-21T02:52:35.01 1.0 undecidable manual P 79 33.3444 123 -0.66 21
IV.HVZN.HHZ. 2013-11-21T02:52:34.16 0.1 positive manual P 123 22.6551 136 -0.22 100
IV.HBSP.HHZ. 2013-11-21T02:52:33.52 0.1 negative manual P 182 18.0708 142 -0.4 98
IV.RAFF.HHE. 2013-11-21T02:52:33.02 0.1 undecidable manual P 239 14.2746 149 -0.57 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AGST.EHN. ML:2.3 0.000319 0.18 AML other m 2013-11-21T02:52:48.90
IV.AGST.EHE. ML:2.2 0.0002725 1 AML other m 2013-11-21T02:52:50.01
IV.HAVL.HHN. ML:2.5 0.0004825 1.36 AML other m 2013-11-21T02:52:50.03
IV.HAVL.HHE. ML:2.4 0.00046599999999999994 0.24 AML other m 2013-11-21T02:52:53.69
IV.HBSP.HHE. ML:2.6 0.0016600000000000002 0.34 AML other m 2013-11-21T02:52:38.79
IV.HBSP.HHN. ML:2.4 0.0012395000000000002 1.46 AML other m 2013-11-21T02:52:40.43
IV.HMDC.HHE. ML:2.1 0.000326 0.38 AML other m 2013-11-21T02:52:44.19
IV.HMDC.HHN. ML:2.2 0.000444 0.24 AML other m 2013-11-21T02:52:44.22
IV.HVZN.HHN. ML:3.2 0.00666 0.68 AML other m 2013-11-21T02:52:39.66
IV.HVZN.HHE. ML:3.0 0.004225 1.08 AML other m 2013-11-21T02:52:40.19
IV.MEU.SHN. ML:2.3 0.000605 0.24 AML other m 2013-11-21T02:52:42.83
IV.MEU.SHE. ML:2.2 0.0005105 1.2 AML other m 2013-11-21T02:52:45.05
IV.SSY.HHN. ML:2.6 0.0008065 0.9 AML other m 2013-11-21T02:52:48.01
IV.SSY.HHE. ML:2.2 0.0003835 1.18 AML other m 2013-11-21T02:52:48.84
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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