Earthquake with magnitude of Md 2.8 on date 29-09-2002 and time 10:10:44 (Italy) in region 10 km N Gressoney La Trinité (AO)

A magnitude Md 2.8 earthquake occured in region: 10 km N Gressoney La Trinité (AO), on

  • 29-09-2002 08:10:44 (UTC)
  • 29-09-2002 10:10:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.921, 7.823 at 4 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Gressoney-La-Trinité AO 10 303 303
Alagna Valsesia VC 12 408 711
Macugnaga VB 13 557 1268
Riva Valdobbia VC 14 258 1526
Ayas AO 16 1401 2927
Gressoney-Saint-Jean AO 16 807 3734
Valtournenche AO 16 2277 6011
Rima San Giuseppe VC 17 59 6070
Carcoforo VC 18 78 6148
Chamois AO 18 97 6245
Brusson AO 19 897 7142
Ceppo Morelli VB 20 321 7463
Mollia VC 20 95 7558
La Magdeleine AO 20 109 7667
Rimasco VC 20 106 7773

Municipalities with at least 50000 inhabitants

An earthquake occurred to
78 Km W of Varese (80799 inhabitants)
81 Km W of Gallarate (53343 inhabitants)
82 Km NW of Novara (104380 inhabitants)
87 Km W of Busto Arsizio (83106 inhabitants)
93 Km W of Legnano (60262 inhabitants)
95 Km N of Torino (890529 inhabitants)
99 Km W of Como (84495 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 2.8
ML-VAX 2.1
2002-09-29
08:10:44
45.921 7.823 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 453469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-09-29 08:10:44 ± 0.571
Latitude 45.9210 ± 0.0225
Longitude 7.8230 ± 0.0469
Depth (km) 4 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 453469

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 4401.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 208
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.01659
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 453469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:09:12

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 453469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BRMO.Z. 2002-09-29T08:11:40.11 10.0 undecidable manual SN 71 0.0166 -0.78 0.3
--.BNI.Z. 2002-09-29T08:11:24.11 10.0 undecidable manual SN 223 0.0106 -0.9 0.3
--.BRMO.Z. 2002-09-29T08:11:17.57 10.0 undecidable manual PN 71 0.0166 0.38 1.2
--.FIN.Z. 2002-09-29T08:11:16.55 10.0 undecidable manual PN 170 0.0155 0.96 0.5
--.DOI.Z. 2002-09-29T08:11:11.17 10.0 undecidable manual PN 196 0.0132 -0.86 0.6
--.BNI.Z. 2002-09-29T08:11:08.58 10.0 undecidable manual PN 223 0.0106 0.56 1.2
--.ORO.Z. 2002-09-29T08:10:56.34 10.0 undecidable manual SG 159 0.0028 -0.63 0.5
--.ORO.Z. 2002-09-29T08:10:52.70 10.0 undecidable manual PG 159 0.0028 0.24 1.9
--.MCGN.Z. 2002-09-29T08:10:50.20 10.0 undecidable manual SG 72 0.0011 0.53 0.6
--.MCGN.Z. 2002-09-29T08:10:47.16 10.0 negative manual PG 72 0.0011 -0.46 3.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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