Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 20-04-2011 and time 01:10:38 (UTC) in region Isole Eolie (Messina)

A magnitude ML 2.0 earthquake occured in region: Isole Eolie (Messina), on

  • 20-04-2011 01:10:38 (UTC)
  • 20-04-2011 03:10:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.5250, 14.7000 at 11 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
Leni ME 11 696 696
Malfa ME 13 982 1678
Santa Marina Salina ME 16 903 2581

Municipalities with at least 50000 inhabitants

An earthquake occurred to
83 Km W of Messina (238439 inhabitants)
94 Km NW of Reggio di Calabria (183035 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 2.1
ML 2.0 		2011-04-20
01:10:38		 38.525 14.7 11 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1198819
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-20 01:10:38 ± 0.15
Latitude 38.5250 ± 0.0234
Longitude 14.7000 ± 0.0161
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1198819

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2448
Semi-minor axis of confidence ellipse (meter) 1560
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 356
Circular confidence region, given by single value of horizontal uncertainty (meter) 2953.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.73205
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1198819
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:27:02

Md:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1198819
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:27:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FNVD.HHZ. 2011-04-20T01:11:20.86 10.0 undecidable manual Pg 0 0 0
HL.KEK.BHN. 2011-04-20T01:11:11.44 10.0 undecidable manual Pg 0 0 0
IV.TRTR.HHE. 2011-04-20T01:11:11.38 10.0 undecidable manual Pg 0 0 0
IV.SBPO.HHZ. 2011-04-20T01:11:08.85 10.0 undecidable manual Pg 0 0 0
IV.MSRU.HHN. 2011-04-20T01:11:01.93 0.3 undecidable manual Sg 112 76.0683 0.705 58
IV.HMDC.HHZ. 2011-04-20T01:11:01.25 10.0 undecidable manual Pg 0 0 0
IV.NOV.HHZ. 2011-04-20T01:10:59.15 0.3 undecidable manual Sg 145 66.9774 0.334 66
IV.MPNC.HHN. 2011-04-20T01:10:59.62 0.6 undecidable manual Sg 126 70.6737 -0.169 45
IV.MILZ.HHE. 2011-04-20T01:10:55.05 0.3 undecidable manual Sg 121 54.1014 -0.323 68
IV.MMME.HHN. 2011-04-20T01:10:52.47 0.3 undecidable manual Pg 143 81.252 0.096 68
IV.MSRU.HHN. 2011-04-20T01:10:51.56 0.3 undecidable manual Pg 112 76.0683 0 69
IV.MNO.SHZ. 2011-04-20T01:10:50.36 0.3 undecidable manual Pg 180 65.8896 0.362 66
IV.MPNC.HHN. 2011-04-20T01:10:50.21 0.3 undecidable manual Pg 126 70.6737 -0.521 63
IV.NOV.HHZ. 2011-04-20T01:10:49.81 0.1 undecidable manual Pg 145 66.9774 -0.359 88
IV.IVPL.HHZ. 2011-04-20T01:10:48.61 0.3 undecidable manual Sg 124 29.4483 -0.172 73
IV.MILZ.HHE. 2011-04-20T01:10:47.69 0.3 undecidable manual Pg 121 54.1014 -0.491 65
IV.ILLI.HHZ. 2011-04-20T01:10:47.98 0.3 undecidable manual Sg 112 23.2545 0.829 61
IV.IVPL.HHZ. 2011-04-20T01:10:44.40 0.3 undecidable manual Pg 124 29.4483 0.024 76
IV.IACL.HHN. 2011-04-20T01:10:44.38 0.3 undecidable manual Pg 272 29.9478 -0.078 74
IV.IFIL.EHZ. 2011-04-20T01:10:44.28 0.3 undecidable manual Sg 292 11.6772 0.472 71
IV.ILLI.HHZ. 2011-04-20T01:10:43.28 0.1 undecidable manual Pg 112 23.2545 -0.154 99
IV.IFIL.EHZ. 2011-04-20T01:10:41.30 0.1 undecidable manual Pg 292 11.6772 -0.204 100
BA.PZUN.HHN. 2011-04-20T01:10:30.85 10.0 undecidable manual Pg 0 0 0
IV.RAVA.EHN. 2011-04-20T01:10:22.14 10.0 undecidable manual Pg 0 0 0
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