Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 28-10-2009 and time 05:00:13 (Italy) in region 9 km E Tarvisio (UD)

A magnitude ML 2.1 earthquake occured in region: 9 km E Tarvisio (UD), on

  • 28-10-2009 04:00:13 (UTC)
  • 28-10-2009 05:00:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.4820, 13.6840 at 7 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
Tarvisio UD 9 4326 4326
Malborghetto Valbruna UD 19 951 5277

Municipalities with at least 50000 inhabitants

An earthquake occurred to
58 Km NE of Udine (99169 inhabitants)
93 Km N of Trieste (204420 inhabitants)
98 Km NE of Pordenone (51229 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 2.3
ML 2.1 		2009-10-28
04:00:13		 46.482 13.684 7 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 984129
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-10-28 04:00:13 ± 0.32
Latitude 46.4820 ± 0.0126
Longitude 13.6840 ± 0.0196
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 984129

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1717
Semi-minor axis of confidence ellipse (meter) 1111
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 42
Circular confidence region, given by single value of horizontal uncertainty (meter) 2051.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 236
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.54
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.60259
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 984129
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:49:58

Md:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 984129
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:49:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APPI.EHZ. 2009-10-28T04:00:46.31 10.0 undecidable manual Pg 0 0 0
SI.ABSI.BHN. 2009-10-28T04:00:45.68 10.0 undecidable manual Pg 0 0 0
SI.KOSI.BHN. 2009-10-28T04:00:44.88 10.0 undecidable manual Pg 0 0 0
OE.WTTA.HHZ. 2009-10-28T04:00:43.75 0.6 undecidable manual Pg 300 177.8886 0.819 28
IV.FIR.HHN. 2009-10-28T04:00:40.93 10.0 undecidable manual Pg 0 0 0
MN.TRI.HHZ. 2009-10-28T04:00:40.60 0.3 undecidable manual Sg 176 85.9473 0.703 57
NI.AGOR.HHE. 2009-10-28T04:00:38.24 10.0 undecidable manual Pg 0 0 0
IV.RNI2.HHZ. 2009-10-28T04:00:35.56 10.0 undecidable manual Pg 0 0 0
IV.FVI.HHE. 2009-10-28T04:00:35.66 0.6 undecidable manual Sg 281 70.0743 0.005 47
NI.PALA.HHN. 2009-10-28T04:00:34.89 0.6 undecidable manual Sg 246 63.7917 0.908 37
NI.SABO.HHZ. 2009-10-28T04:00:32.00 0.6 undecidable manual Sg 184 55.0005 0.378 45
MN.TRI.HHZ. 2009-10-28T04:00:29.08 0.6 undecidable manual Pg 176 85.9473 0.305 43
NI.VINO.HHZ. 2009-10-28T04:00:27.39 0.3 undecidable manual Sg 231 40.2264 -0.289 71
IV.FVI.HHE. 2009-10-28T04:00:26.04 0.3 undecidable manual Pg 281 70.0743 -0.286 67
IV.RMP.HHE. 2009-10-28T04:00:25.43 10.0 undecidable manual Pg 0 0 0
NI.PALA.HHN. 2009-10-28T04:00:25.11 0.3 undecidable manual Pg 246 63.7917 -0.25 68
IV.PRMA.HHN. 2009-10-28T04:00:23.19 10.0 undecidable manual Pg 0 0 0
IV.PTCC.HHE. 2009-10-28T04:00:23.23 0.3 undecidable manual Sg 252 26.5512 0.127 75
NI.SABO.HHZ. 2009-10-28T04:00:23.57 0.1 undecidable manual Pg 184 55.0005 -0.427 89
NI.VINO.HHZ. 2009-10-28T04:00:21.06 0.1 undecidable manual Pg 231 40.2264 -0.662 85
NI.ACOM.HHZ. 2009-10-28T04:00:19.44 0.3 undecidable manual Sg 299 14.874 0.143 76
IV.PTCC.HHE. 2009-10-28T04:00:18.89 0.1 undecidable manual Pg 252 26.5512 -0.19 99
NI.ACOM.HHZ. 2009-10-28T04:00:17.11 0.1 undecidable manual Pg 299 14.874 0.228 100
IV.ROM9.HHZ. 2009-10-28T04:00:04.28 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