Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 19-03-2011 and time 11:22:00 (UTC) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 2.0 earthquake occured in region: Costa Ligure centro occidentale (Savona), on

  • 19-03-2011 11:22:00 (UTC)
  • 19-03-2011 12:22:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1770, 8.6090 at 10 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
Bergeggi SV 15 1129 1129
Noli SV 16 2736 3865
Spotorno SV 16 3803 7668
Vado Ligure SV 17 8336 16004
Savona SV 18 61345 77349
Albissola Marina SV 19 5487 82836
Celle Ligure SV 19 5237 88073
Albisola Superiore SV 20 10163 98236

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km SE of Savona (61345 inhabitants)
37 Km SW of Genova (586655 inhabitants)
77 Km NE of Sanremo (54807 inhabitants)
82 Km S of Alessandria (93943 inhabitants)
87 Km SE of Asti (76202 inhabitants)
88 Km E of Cuneo (56081 inhabitants)
98 Km W of La Spezia (93959 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 		2011-03-19
11:22:00		 44.177 8.609 11 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1183679
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-03-19 11:22:00 ± 0.16
Latitude 44.1770 ± 0.0090
Longitude 8.6090 ± 0.0075
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1183679

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 914
Semi-minor axis of confidence ellipse (meter) 467
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 174
Circular confidence region, given by single value of horizontal uncertainty (meter) 1166.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.16282
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1183679
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:06:44

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1183679
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:06:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.MUGIO.HHE. 2011-03-19T11:22:50.04 10.0 undecidable manual Pg 0 0 0
IV.FSSB.HHZ. 2011-03-19T11:22:42.93 10.0 undecidable manual Pg 0 0 0
IV.FIU.EHE. 2011-03-19T11:22:25.48 10.0 undecidable manual Pg 0 0 0
GU.SC2M.HHE. 2011-03-19T11:22:23.31 0.6 undecidable manual Sg 71 77.6667 -0.266 43
GU.BHB.HHN. 2011-03-19T11:22:22.03 0.3 undecidable manual Pg 305 129.0708 0.382 57
GU.PZZ.HHE. 2011-03-19T11:22:20.73 0.6 undecidable manual Pg 288 123.987 -0.132 40
IV.IMI.HHN. 2011-03-19T11:22:20.02 0.6 undecidable manual Sg 243 64.2912 -0.006 46
IV.DOI.HHE. 2011-03-19T11:22:19.74 0.6 undecidable manual Pg 289 113.997 0.41 39
GU.STV.HHZ. 2011-03-19T11:22:18.44 0.3 undecidable manual Pg 275 102.3198 0.917 50
IV.PLMA.HHN. 2011-03-19T11:22:16.90 0.3 undecidable manual Pg 98 99.8223 -0.248 62
GU.RORO.HHN. 2011-03-19T11:22:14.00 0.3 undecidable manual Sg 261 43.8228 -0.557 63
IV.ALJA.HHN. 2011-03-19T11:22:14.94 10.0 undecidable manual Sg 0 0 0
GU.PCP.HHZ. 2011-03-19T11:22:13.49 0.6 undecidable manual Sg 353 40.7259 -0.225 47
GU.SC2M.HHE. 2011-03-19T11:22:13.90 0.1 undecidable manual Pg 71 77.6667 0.18 88
IV.IMI.HHN. 2011-03-19T11:22:11.84 0.1 undecidable manual Pg 243 64.2912 0.17 91
IV.QLNO.HHZ. 2011-03-19T11:22:09.96 0.3 undecidable manual Sg 308 26.5512 0.016 75
GU.FINB.HHZ. 2011-03-19T11:22:08.68 0.3 undecidable manual Sg 270 22.5552 -0.207 73
GU.RORO.HHN. 2011-03-19T11:22:08.41 0.1 undecidable manual Pg 261 43.8228 -0.102 94
GU.PCP.HHZ. 2011-03-19T11:22:07.90 0.1 undecidable manual Pg 353 40.7259 -0.126 96
IV.ALJA.HHN. 2011-03-19T11:22:07.67 10.0 undecidable manual Pg 0 0 0
GU.FINB.HHZ. 2011-03-19T11:22:05.19 0.1 undecidable manual Pg 270 22.5552 -0.047 100
IV.QLNO.HHZ. 2011-03-19T11:22:05.90 0.1 undecidable manual Pg 308 26.5512 0.056 99
IV.MRB1.HHZ. 2011-03-19T11:21:59.97 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