Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 20-02-2013 and time 17:04:16 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 2.2 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 20-02-2013 16:04:16 (UTC)
  • 20-02-2013 17:04:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.4810, 15.5480 at 140 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km N of Messina (238439 inhabitants)
42 Km N of Reggio di Calabria (183035 inhabitants)
87 Km SW of Lamezia Terme (70714 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 2013-02-20
16:04:16		 38.481 15.5478 141 2015-01-20
11:22:43		 Bollettino Sismico Italiano INGV 3635241
Reviewed
Rev100 		ML 2.2 2013-02-20
16:04:16		 38.4485 15.6335 145 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2982191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-02-20 16:04:16 ± 0.4
Latitude 38.4810 ± 0.0171
Longitude 15.5478 ± 0.0287
Depth (km) 141 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3635241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2112
Semi-minor axis of confidence ellipse (meter) 1589
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 289
Circular confidence region, given by single value of horizontal uncertainty (meter) 2110.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.29228
Epicentral distance of station farthest from the epicenter (degree) 1.17272
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 3635241
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:24:33

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 2982191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-02-20 16:15:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.TIP.HHZ. 2013-02-20T16:05:01.62 0.6 undecidable manual S 53 130.1697 134 0.53 38
IV.CET2.HHZ. 2013-02-20T16:04:59.27 0.6 undecidable manual S 17 121.3896 136 -0.49 40
IV.PLAC.HHZ. 2013-02-20T16:04:53.54 0.6 undecidable manual S 92 77.4669 149 -0.44 44
IV.MTTG.HHZ. 2013-02-20T16:04:52.56 0.6 undecidable manual S 166 54.6009 157 0.81 40
IV.SOI.EHZ. 2013-02-20T16:04:52.28 0.6 undecidable manual S 136 63.1923 154 -0.23 47
IV.AIO.HHZ. 2013-02-20T16:04:52.92 0.6 undecidable manual S 206 62.8926 154 0.44 45
MN.TIP.HHZ. 2013-02-20T16:04:42.70 0.1 undecidable manual P 53 130.1697 134 0.53 77
IV.CET2.HHZ. 2013-02-20T16:04:41.60 0.1 undecidable manual P 17 121.3896 136 0.2 85
IV.PLAC.HHZ. 2013-02-20T16:04:38.26 0.1 positive manual P 92 77.4669 149 0.2 92
IV.AIO.HHZ. 2013-02-20T16:04:37.36 0.1 undecidable manual P 206 62.8926 154 0.16 96
IV.MUCR.HHZ. 2013-02-20T16:04:37.80 0.1 undecidable manual P 231 76.1682 149 -0.18 93
IV.MPAZ.HHZ. 2013-02-20T16:04:37.49 0.1 positive manual P 146 70.8735 151 -0.17 94
IV.SOI.EHZ. 2013-02-20T16:04:37.09 0.1 undecidable manual P 136 63.1923 154 -0.12 96
IV.MTTG.HHZ. 2013-02-20T16:04:36.80 0.1 undecidable manual P 166 54.6009 157 0.03 100
IV.JOPP.HHZ. 2013-02-20T16:04:35.62 0.1 undecidable manual P 64 32.4453 166 -0.28 99
IV.MSCL.HHZ. 2013-02-20T16:04:35.51 0.1 undecidable manual P 143 34.743 165 -0.46 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHE. ML:1.8 0.0000336 1.04 AML other m 2013-02-20T16:04:53.29
IV.AIO.HHN. ML:1.8 0.0000335 0.22 AML other m 2013-02-20T16:04:54.69
IV.CET2.HHN. ML:2.7 0.00017749999999999998 0.38 AML other m 2013-02-20T16:05:00.78
IV.CET2.HHE. ML:2.5 0.00011350000000000001 0.52 AML other m 2013-02-20T16:05:00.98
IV.JOPP.HHN. ML:2.2 0.00009595 0.84 AML other m 2013-02-20T16:04:50.85
IV.JOPP.HHE. ML:2.2 0.00008625 0.8 AML other m 2013-02-20T16:04:50.85
IV.MPAZ.HHE. ML:2.2 0.00007325 0.96 AML other m 2013-02-20T16:04:38.55
IV.MPAZ.HHN. ML:2.2 0.00006725000000000001 0.98 AML other m 2013-02-20T16:04:38.67
IV.PLAC.HHE. ML:2.1 0.0000536 0.74 AML other m 2013-02-20T16:04:55.01
IV.PLAC.HHN. ML:2.1 0.00005695 1.52 AML other m 2013-02-20T16:04:55.09
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