Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 20-04-2013 and time 21:05:31 (Italy) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 2.2 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 20-04-2013 19:05:31 (UTC)
  • 20-04-2013 21:05:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.2900, 14.8510 at 120 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
Gioiosa Marea ME 14 7074 7074
Piraino ME 14 3962 11036
Brolo ME 15 5783 16819
Capo d'Orlando ME 17 13254 30073
Patti ME 19 13431 43504
Naso ME 19 3813 47317
Montagnareale ME 19 1615 48932
Sant'Angelo di Brolo ME 20 3090 52022
Ficarra ME 20 1469 53491

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km W of Messina (238439 inhabitants)
72 Km W of Reggio di Calabria (183035 inhabitants)
80 Km NW of Acireale (52622 inhabitants)
90 Km N of Catania (314555 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 2.2 2013-04-20
19:05:31		 38.2903 14.8512 120 2015-01-20
11:25:00		 Bollettino Sismico Italiano INGV 3310281
Reviewed
Rev100 		ML 2.1 2013-04-20
19:05:33		 38.3032 14.8905 100 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 3237671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-04-20 19:05:31 ± 0.38
Latitude 38.2903 ± 0.0342
Longitude 14.8512 ± 0.0241
Depth (km) 120 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3310281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3810
Semi-minor axis of confidence ellipse (meter) 1098
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 166
Circular confidence region, given by single value of horizontal uncertainty (meter) 3810.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.13220
Epicentral distance of station farthest from the epicenter (degree) 1.25365
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:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 3237671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-04-20 19:20:59

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 3310281
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 12:55:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2013-04-20T19:06:16.00 0.6 undecidable manual S 82 139.1607 127 0.74 33
IV.MPAZ.HHZ. 2013-04-20T19:06:10.30 0.6 undecidable manual S 110 107.5146 134 0.22 41
IV.AIO.HHZ. 2013-04-20T19:06:03.50 0.3 undecidable manual S 137 48.618 156 0.77 58
IV.MSRU.HHZ. 2013-04-20T19:06:03.60 0.3 undecidable manual S 93 57.2982 152 0.05 70
IV.MCPD.HHZ. 2013-04-20T19:06:00.50 0.3 undecidable manual S 209 21.6672 169 -0.47 68
IV.PLAC.HHZ. 2013-04-20T19:05:57.29 0.1 undecidable manual P 82 139.1607 127 0.35 74
IV.RESU.HHZ. 2013-04-20T19:05:54.09 0.3 undecidable manual P 224 99.6225 137 0.84 50
IV.MPAZ.HHZ. 2013-04-20T19:05:53.79 0.1 undecidable manual P 110 107.5146 134 -0.15 82
IV.HLNI.HHZ. 2013-04-20T19:05:52.45 0.1 undecidable manual P 179 104.5176 -1.22 57
IV.CAGR.HHZ. 2013-04-20T19:05:52.55 0.1 undecidable manual P 203 80.2641 143 0.85 69
IV.MSCL.HHZ. 2013-04-20T19:05:51.66 0.1 undecidable manual P 94 82.0512 143 -0.18 86
IV.GALF.HHZ. 2013-04-20T19:05:51.14 0.1 undecidable manual P 201 68.9754 147 0.24 86
IV.PETRA.HHZ. 2013-04-20T19:05:51.81 0.1 undecidable manual P 232 81.8514 143 -0.01 89
IV.GIB.HHE. 2013-04-20T19:05:51.08 0.1 undecidable manual P 245 79.365 144 -0.56 80
IV.IACL.HHE. 2013-04-20T19:05:50.18 0.1 undecidable manual P 302 50.8158 155 0.36 87
IV.MCSR.HHZ. 2013-04-20T19:05:49.61 0.1 undecidable manual P 127 41.4252 159 0.25 91
IV.IFIL.HHE. 2013-04-20T19:05:49.62 0.3 undecidable manual P 322 38.7279 161 0.37 67
IV.MSFR.HHZ. 2013-04-20T19:05:49.11 0.1 undecidable manual P 219 36.3414 162 -0.04 96
IV.MNO.SHE. 2013-04-20T19:05:49.98 0.3 undecidable manual P 199 42.1245 159 0.58 62
IV.MSRU.HHZ. 2013-04-20T19:05:49.56 0.1 undecidable manual P 93 57.2982 152 -0.61 80
IV.MPNC.HHZ. 2013-04-20T19:05:49.30 0.1 undecidable manual P 110 46.5201 157 -0.3 89
IV.AIO.HHZ. 2013-04-20T19:05:49.81 0.1 undecidable manual P 137 48.618 156 0.11 93
IV.NOV.HHZ. 2013-04-20T19:05:49.55 0.1 undecidable manual P 139 38.3283 161 0.32 90
IV.MCPD.HHZ. 2013-04-20T19:05:48.28 0.1 undecidable manual P 209 21.6672 169 -0.4 92
IV.MILZ.HHE. 2013-04-20T19:05:48.55 0.1 undecidable manual P 94 33.1446 163 -0.48 88
IV.MUCR.HHZ. 2013-04-20T19:05:48.25 0.1 undecidable manual P 176 27.5502 166 -0.59 86
IV.IVPL.HHE. 2013-04-20T19:05:48.57 0.1 undecidable manual P 50 14.6742 172 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHE. ML:2.0 0.00005835 1.3 AML other m 2013-04-20T19:05:51.12
IV.AIO.HHN. ML:2.0 0.00007345 0.22 AML other m 2013-04-20T19:05:51.71
IV.CAGR.HHN. ML:2.6 0.000241 0.38 AML other m 2013-04-20T19:05:53.66
IV.CAGR.HHE. ML:2.4 0.0001475 1 AML other m 2013-04-20T19:05:54.61
IV.GALF.HHN. ML:2.2 0.00010495 1.12 AML other m 2013-04-20T19:05:54.92
IV.GALF.HHE. ML:2.1 0.0000705 1.24 AML other m 2013-04-20T19:05:56.64
IV.HLNI.HHE. ML:1.8 0.00003175 0.88 AML other m 2013-04-20T19:05:53.21
IV.HLNI.HHN. ML:2.1 0.0000538 1.12 AML other m 2013-04-20T19:06:08.57
IV.JOPP.HHE. ML:2.1 0.0000677 1.22 AML other m 2013-04-20T19:06:00.66
IV.JOPP.HHN. ML:2.2 0.00007605 1.58 AML other m 2013-04-20T19:06:27.23
IV.MCPD.HHN. ML:1.7 0.00004015 0.46 AML other m 2013-04-20T19:06:01.23
IV.MCPD.HHE. ML:1.6 0.0000309 0.06 AML other m 2013-04-20T19:06:03.58
IV.MCSR.HHN. ML:2.6 0.0003055 0.32 AML other m 2013-04-20T19:05:50.89
IV.MCSR.HHE. ML:2.4 0.00017649999999999998 0.28 AML other m 2013-04-20T19:05:53.17
IV.MEU.SHE. ML:2.2 0.000060150000000000005 1.2 AML other m 2013-04-20T19:06:23.85
IV.MEU.SHN. ML:2.4 0.00009620000000000001 0.64 AML other m 2013-04-20T19:06:12.85
IV.MPAZ.HHE. ML:2.0 0.00003985 0.42 AML other m 2013-04-20T19:06:11.30
IV.MPAZ.HHN. ML:2.1 0.0000562 1.52 AML other m 2013-04-20T19:06:13.83
IV.MPNC.HHE. ML:2.3 0.000133 0.42 AML other m 2013-04-20T19:06:05.89
IV.MPNC.HHN. ML:2.2 0.00011149999999999999 0.44 AML other m 2013-04-20T19:06:08.01
IV.MSRU.HHN. ML:2.3 0.0001315 0.5 AML other m 2013-04-20T19:06:04.07
IV.MSRU.HHE. ML:2.2 0.0001073 1.2 AML other m 2013-04-20T19:06:05.21
IV.MTTG.HHE. ML:2.2 0.0000967 0.64 AML other m 2013-04-20T19:06:09.55
IV.MTTG.HHN. ML:2.3 0.00011300000000000001 0.62 AML other m 2013-04-20T19:06:08.94
IV.PETRA.HHE. ML:2.0 0.0000588 0.96 AML other m 2013-04-20T19:05:54.77
IV.PETRA.HHN. ML:2.1 0.000073 0.32 AML other m 2013-04-20T19:05:53.44
IV.PLAC.HHN. ML:2.2 0.00005325 0.36 AML other m 2013-04-20T19:06:16.41
IV.PLAC.HHE. ML:2.4 0.00009845000000000001 0.38 AML other m 2013-04-20T19:06:18.00
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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