Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 20-07-2011 and time 01:01:39 (UTC) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 2.1 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 20-07-2011 01:01:39 (UTC)
  • 20-07-2011 03:01:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.2810, 15.1290 at 9 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
Milazzo ME 12 31646 31646
Terme Vigliatore ME 16 7395 39041
Merì ME 16 2338 41379
Barcellona Pozzo di Gotto ME 17 41583 82962
San Filippo del Mela ME 18 7115 90077
Oliveri ME 18 2181 92258
Falcone ME 19 2808 95066
Pace del Mela ME 19 6239 101305
Rodì Milici ME 19 2056 103361
Furnari ME 20 3784 107145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Messina (238439 inhabitants)
49 Km W of Reggio di Calabria (183035 inhabitants)
74 Km N of Acireale (52622 inhabitants)
87 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 		Md 2.2
ML 2.1 		2011-07-20
01:01:39		 38.281 15.129 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1261879
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-07-20 01:01:39 ± 0.07
Latitude 38.2810 ± 0.0054
Longitude 15.1290 ± 0.0046
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1261879

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 666
Semi-minor axis of confidence ellipse (meter) 66
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 17
Circular confidence region, given by single value of horizontal uncertainty (meter) 721.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.28693
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 1261879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:53:03

Md:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1261879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:53:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELB.HHE. 2011-07-20T01:02:46.97 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHE. 2011-07-20T01:02:28.19 10.0 undecidable manual Pg 0 0 0
IV.HCRL.HHE. 2011-07-20T01:02:14.48 10.0 undecidable manual Pg 0 0 0
IV.HAGA.HHE. 2011-07-20T01:02:14.44 10.0 undecidable manual Pg 0 0 0
IV.GIB.HHN. 2011-07-20T01:02:10.94 10.0 undecidable manual Pg 0 0 0
IV.JOPP.HHZ. 2011-07-20T01:02:02.52 0.6 undecidable manual Sg 61 74.9694 0.442 41
IV.CAR1.HHN. 2011-07-20T01:02:01.74 0.6 undecidable manual Pg 41 142.8459 -1.075 27
IV.PLAC.HHE. 2011-07-20T01:01:59.34 0.6 undecidable manual Pg 80 115.3956 0.756 34
IV.MSFR.HHZ. 2011-07-20T01:01:56.29 0.3 undecidable manual Sg 240 54.3012 -0.267 66
IV.PLLN.SHZ. 2011-07-20T01:01:55.57 0.6 undecidable manual Pg 250 91.8414 0.619 37
IV.GALF.HHE. 2011-07-20T01:01:54.17 0.6 undecidable manual Pg 218 80.1642 1.019 32
IV.MPAZ.HHE. 2011-07-20T01:01:54.48 0.6 undecidable manual Pg 115 84.7485 0.615 38
IV.SOI.EHZ. 2011-07-20T01:01:53.56 0.3 undecidable manual Pg 106 83.8494 -0.169 64
IV.JOPP.HHZ. 2011-07-20T01:01:52.41 0.3 undecidable manual Pg 61 74.9694 0.048 66
IV.IACL.HHE. 2011-07-20T01:01:52.33 0.3 undecidable manual Pg 293 72.8715 0.292 63
MN.CEL.HHZ. 2011-07-20T01:01:51.03 0.3 undecidable manual Pg 92 66.5778 -0.04 68
IV.GMB.BHZ. 2011-07-20T01:01:50.40 0.3 undecidable manual Pg 101 62.1933 0.007 69
IV.MSRU.HHZ. 2011-07-20T01:01:50.30 0.3 undecidable manual Sg 93 33.0447 -0.581 63
IV.MSCL.HHZ. 2011-07-20T01:01:49.66 0.1 undecidable manual Pg 95 57.7977 -0.051 92
IV.IFIL.EHZ. 2011-07-20T01:01:49.70 0.3 undecidable manual Pg 303 57.498 0.033 69
IV.MSFR.HHZ. 2011-07-20T01:01:49.05 0.1 undecidable manual Pg 240 54.3012 -0.124 91
IV.MPNC.HHZ. 2011-07-20T01:01:48.06 0.6 undecidable manual Sg 127 24.5532 -0.062 48
IV.MCSR.HHZ. 2011-07-20T01:01:48.01 0.6 undecidable manual Sg 160 25.5522 -0.446 45
IV.MMME.HHN. 2011-07-20T01:01:47.13 0.6 undecidable manual Pg 164 39.8268 0.187 46
IV.MSRU.HHZ. 2011-07-20T01:01:45.86 0.1 undecidable manual Pg 93 33.0447 -0.037 96
IV.IVPL.HHZ. 2011-07-20T01:01:45.50 0.1 undecidable manual Sg 309 16.7721 -0.153 96
IV.MUCR.HHZ. 2011-07-20T01:01:45.75 0.6 undecidable manual Pg 220 34.5432 -0.374 45
IV.ATN.BHN. 2011-07-20T01:01:45.62 0.3 undecidable manual Pg 115 32.1456 -0.141 71
IV.SACR.HHZ. 2011-07-20T01:01:44.52 10.0 undecidable manual Pg 0 0 0
IV.MPNC.HHZ. 2011-07-20T01:01:44.48 0.1 undecidable manual Pg 127 24.5532 0.176 95
IV.MCSR.HHZ. 2011-07-20T01:01:44.52 0.1 undecidable manual Pg 160 25.5522 0.023 97
IV.ILLI.HHZ. 2011-07-20T01:01:43.52 10.0 undecidable manual Pg 0 0 0
IV.MILZ.HHZ. 2011-07-20T01:01:43.47 0.1 undecidable manual Sg 97 8.9799 0.039 100
IV.IVPL.HHZ. 2011-07-20T01:01:42.77 0.1 undecidable manual Pg 309 16.7721 -0.109 97
IV.MILZ.HHZ. 2011-07-20T01:01:41.73 0.1 undecidable manual Pg 97 8.9799 0.134 98
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