Earthquake with magnitude of ML 3.1 on date 04-04-2010 and time 21:16:29 (UTC) in region 6 km W Torgnon (AO)

A magnitude ML 3.1 earthquake occured in region: 6 km W Torgnon (AO), on

  • 04-04-2010 21:16:29 (UTC)
  • 04-04-2010 23:16:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.8140, 7.4980 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Torgnon AO 6 558 558
Verrayes AO 6 1302 1860
Antey-Saint-André AO 8 602 2462
Saint-Denis AO 8 378 2840
Nus AO 9 2984 5824
Fénis AO 9 1813 7637
Chambave AO 9 931 8568
Bionaz AO 9 236 8804
La Magdeleine AO 10 109 8913
Saint-Marcel AO 10 1362 10275
Oyace AO 10 219 10494
Chamois AO 10 97 10591
Quart AO 10 4039 14630
Pontey AO 11 817 15447
Châtillon AO 12 4772 20219
Brissogne AO 12 1008 21227
Valtournenche AO 12 2277 23504
Saint-Christophe AO 13 3432 26936
Valpelline AO 13 657 27593
Saint-Vincent AO 14 4660 32253
Pollein AO 14 1569 33822
Ayas AO 15 1401 35223
Roisan AO 15 1036 36259
Doues AO 15 510 36769
Ollomont AO 15 157 36926
Gignod AO 16 1710 38636
Aosta AO 16 34390 73026
Charvensod AO 17 2468 75494
Allein AO 17 229 75723
Montjovet AO 18 1801 77524
Emarèse AO 19 226 77750
Champdepraz AO 19 712 78462
Gressan AO 19 3387 81849
Brusson AO 19 897 82746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
84 Km N of Torino (890529 inhabitants)
92 Km N of Moncalieri (57294 inhabitants)
97 Km W of Novara (104380 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 3.1 2010-04-04
21:16:29
45.814 7.498 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1026869
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2010-04-04 21:16:29 ± 0.28
Latitude 45.8140 ± 0.0099
Longitude 7.4980 ± 0.0142
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1026869

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1036
Semi-minor axis of confidence ellipse (meter) 760
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 1555.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.96
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.18175
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 28
Magnitude information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1026869
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 19:43:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHE. 2010-04-04T21:17:33.27 10.0 undecidable manual Pg 0 0 0
NI.POLC.HHZ. 2010-04-04T21:17:28.81 10.0 undecidable manual Pg 0 0 0
IV.SEI.SHZ. 2010-04-04T21:17:28.10 10.0 undecidable manual Pg 0 0 0
SI.RISI.BHZ. 2010-04-04T21:17:25.90 10.0 undecidable manual Pg 0 0 0
NI.CGRP.HHN. 2010-04-04T21:17:25.50 10.0 undecidable manual Sg 0 0 0
NI.AGOR.HHN. 2010-04-04T21:17:25.71 10.0 undecidable manual Pg 0 0 0
OE.WTTA.HHZ. 2010-04-04T21:17:23.98 10.0 undecidable manual Pg 0 0 0
NI.CGRP.HHN. 2010-04-04T21:17:21.72 10.0 undecidable manual Pg 0 0 0
GU.FIVI.HLZ. 2010-04-04T21:17:19.31 10.0 undecidable manual Sg 0 0 0
IV.QLNO.HHE. 2010-04-04T21:17:19.46 0.6 undecidable manual Sg 158 1.6044 0.257 32
IV.PII.SHZ. 2010-04-04T21:17:18.29 10.0 undecidable manual Pg 0 0 0
SI.ABSI.BHE. 2010-04-04T21:17:18.59 10.0 undecidable manual Pg 0 0 0
IV.APPI.EHE. 2010-04-04T21:17:16.12 10.0 undecidable manual Pg 0 0 0
IV.ROVR.HHN. 2010-04-04T21:17:14.47 10.0 undecidable manual Sg 0 0 0
GU.FIVI.HLZ. 2010-04-04T21:17:13.61 10.0 undecidable manual Pg 0 0 0
SI.MOSI.BHZ. 2010-04-04T21:17:09.99 10.0 undecidable manual Pg 0 0 0
IV.ROVR.HHN. 2010-04-04T21:17:08.77 10.0 undecidable manual Pg 0 0 0
IV.BRMO.HHZ. 2010-04-04T21:17:07.68 10.0 undecidable manual Pg 0 0 0
IV.MABI.HHE. 2010-04-04T21:17:06.08 0.6 undecidable manual Pg 82 2.1098 1.085 17
CH.FUORN.HHE. 2010-04-04T21:17:06.63 10.0 undecidable manual Pg 0 0 0
IV.MAGA.HHN. 2010-04-04T21:17:06.27 0.6 undecidable manual Pg 90 2.1818 0.29 22
CH.GIMEL.HHZ. 2010-04-04T21:17:05.98 0.6 undecidable manual Sg 311 1.1161 1.168 28
CH.DAVOX.HHE. 2010-04-04T21:17:04.00 0.1 undecidable manual Pg 59 1.9075 1.808 26
CH.MUGIO.HHZ. 2010-04-04T21:17:04.19 0.6 undecidable manual Sg 84 1.0801 0.445 38
CH.BERNI.HHE. 2010-04-04T21:17:03.31 0.3 undecidable manual Pg 70 1.8490 1.923 18
IV.IMI.HHN. 2010-04-04T21:17:02.95 0.1 undecidable manual Pg 171 1.9228 0.546 50
CH.PLONS.HHN. 2010-04-04T21:17:02.27 0.3 undecidable manual Pg 46 1.7905 1.696 23
GU.BHB.HHE. 2010-04-04T21:17:01.12 0.6 undecidable manual Sg 190 0.9920 -0.022 42
GU.RORO.HHE. 2010-04-04T21:17:00.68 0.3 undecidable manual Pg 167 1.7474 0.693 39
GU.FINB.HHZ. 2010-04-04T21:17:00.69 0.6 undecidable manual Pg 160 1.7366 0.849 25
MN.BNI.HHN. 2010-04-04T21:16:59.72 0.3 undecidable manual Sg 217 0.9542 -0.299 61
IV.QLNO.HHE. 2010-04-04T21:16:58.70 0.6 undecidable manual Pg 158 1.6044 0.691 29
IV.MDI.HHE. 2010-04-04T21:16:57.52 0.3 undecidable manual Pg 91 1.5468 0.457 48
IV.VARE.HHE. 2010-04-04T21:16:57.62 0.6 undecidable manual Sg 86 0.8876 -0.424 40
GU.STV.HHE. 2010-04-04T21:16:56.38 0.1 undecidable manual Pg 184 1.5720 -1.126 48
GU.PCP.HHZ. 2010-04-04T21:16:56.81 0.1 undecidable manual Pg 150 1.4704 1.044 53
MN.TUE.HHE. 2010-04-04T21:16:55.25 10.0 undecidable manual Pg 0 0 0
GU.PZZ.HHZ. 2010-04-04T21:16:53.18 0.1 undecidable manual Pg 192 1.3337 -0.25 75
IV.DOI.HHZ. 2010-04-04T21:16:52.53 0.1 undecidable manual Pg 188 1.3211 -0.679 66
GU.RSP.HHZ. 2010-04-04T21:16:52.00 0.6 undecidable manual Sg 194 0.6853 -0.045 45
CH.BNALP.HHZ. 2010-04-04T21:16:51.49 0.1 undecidable manual Pg 31 1.2348 -0.238 77
CH.GIMEL.HHZ. 2010-04-04T21:16:50.59 0.3 undecidable manual Pg 311 1.1161 0.892 48
CH.MUGIO.HHZ. 2010-04-04T21:16:49.18 0.1 undecidable manual Pg 84 1.0801 0.094 82
CH.FUSIO.HHZ. 2010-04-04T21:16:48.10 0.1 undecidable manual Pg 51 1.0306 -0.136 82
MN.BNI.HHN. 2010-04-04T21:16:47.48 0.3 undecidable manual Pg 217 0.9542 0.541 57
GU.BHB.HHE. 2010-04-04T21:16:47.78 0.1 undecidable manual Pg 190 0.9920 0.199 82
IV.MONC.HHZ. 2010-04-04T21:16:46.65 0.3 undecidable manual Pg 158 0.7986 2.374 18
IV.VARE.HHE. 2010-04-04T21:16:45.86 0.3 undecidable manual Pg 86 0.8876 0.065 65
GU.RSP.HHZ. 2010-04-04T21:16:42.66 0.1 undecidable manual Pg 194 0.6853 0.324 85
GU.TRAV.HHE. 2010-04-04T21:16:41.80 0.3 undecidable manual Sg 150 0.3480 -0.259 69
IV.MRGE.HHZ. 2010-04-04T21:16:39.37 0.3 undecidable manual Sg 262 0.3076 -1.487 42
GU.SATI.HHZ. 2010-04-04T21:16:38.05 0.1 undecidable manual Sg 77 0.2653 -1.562 53
GU.CIRO.HHZ. 2010-04-04T21:16:37.90 0.1 undecidable manual Sg 167 0.2176 -0.248 95
CH.MMK.HHN. 2010-04-04T21:16:36.49 0.1 undecidable manual Pg 54 0.4020 -1.003 70
GU.TRAV.HHE. 2010-04-04T21:16:36.71 0.1 undecidable manual Pg 150 0.3480 0.146 95
IV.MRGE.HHZ. 2010-04-04T21:16:35.18 0.1 undecidable manual Pg 262 0.3076 -0.691 82
GU.CIRO.HHZ. 2010-04-04T21:16:34.31 0.1 undecidable manual Pg 167 0.2176 0.005 100
GU.SATI.HHZ. 2010-04-04T21:16:34.37 0.1 positive manual Pg 77 0.2653 -0.784 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CIRO.HHN. ML:3.0 0.006 0.25 AML other m 2010-04-04T21:16:34.31
GU.CIRO.HHE. ML:3.0 0.006 0.25 AML other m 2010-04-04T21:16:34.31
GU.SATI.HHN. ML:3.1 0.0065 0.21 AML other m 2010-04-04T21:16:34.37
GU.SATI.HHE. ML:3.1 0.0065 0.21 AML other m 2010-04-04T21:16:34.37
IV.MRGE.HHN. ML:3.2 0.006925 0.18 AML other m 2010-04-04T21:16:35.18
IV.MRGE.HHE. ML:3.2 0.005405 0.22 AML other m 2010-04-04T21:16:35.18
GU.TRAV.HHN. ML:3.1 0.00491 0.16 AML other m 2010-04-04T21:16:36.71
GU.TRAV.HHE. ML:3.1 0.004115000000000001 0.28 AML other m 2010-04-04T21:16:36.71
GU.RSP.HHN. ML:3.4 0.003435 0.22 AML other m 2010-04-04T21:16:42.66
GU.RSP.HHE. ML:3.4 0.003415 0.22 AML other m 2010-04-04T21:16:42.66
IV.VARE.HHN. ML:2.9 0.00091 0.18 AML other m 2010-04-04T21:16:45.86
IV.VARE.HHE. ML:2.9 0.0007700000000000001 0.24 AML other m 2010-04-04T21:16:45.86
MN.BNI.HHN. ML:2.8 0.000695 0.78 AML other m 2010-04-04T21:16:47.48
MN.BNI.HHE. ML:2.8 0.00044 0.84 AML other m 2010-04-04T21:16:47.48
CH.GIMEL.HHN. ML:3.1 0.0008399999999999999 0.5 AML other m 2010-04-04T21:16:50.59
CH.GIMEL.HHE. ML:3.1 0.00093 0.82 AML other m 2010-04-04T21:16:50.59
CH.BNALP.HHN. ML:3.1 0.000705 0.43 AML other m 2010-04-04T21:16:51.49
CH.BNALP.HHE. ML:3.1 0.00066 0.38 AML other m 2010-04-04T21:16:51.49
IV.DOI.HHN. ML:3.1 0.000535 0.36 AML other m 2010-04-04T21:16:52.53
IV.DOI.HHE. ML:3.1 0.000735 0.26 AML other m 2010-04-04T21:16:52.53
GU.PZZ.HHN. ML:3.4 0.00134 0.3 AML other m 2010-04-04T21:16:53.18
GU.PZZ.HHE. ML:3.4 0.00123 0.58 AML other m 2010-04-04T21:16:53.18
MN.TUE.HHN. ML:0.0 0.0025800000000000003 0.52 AML other m 2010-04-04T21:16:55.25
MN.TUE.HHE. ML:0.0 0.00182 0.48 AML other m 2010-04-04T21:16:55.25
GU.PCP.HHN. ML:2.5 0.00013000000000000002 0.34 AML other m 2010-04-04T21:16:56.81
GU.PCP.HHE. ML:2.5 0.00013000000000000002 0.24 AML other m 2010-04-04T21:16:56.81
CH.PLONS.HHN. ML:3.4 0.0010400000000000001 0.6 AML other m 2010-04-04T21:17:02.27
CH.PLONS.HHE. ML:3.4 0.000675 0.58 AML other m 2010-04-04T21:17:02.27
IV.MAGA.HHN. ML:3.4 0.000335 0.38 AML other m 2010-04-04T21:17:06.27
IV.MAGA.HHE. ML:3.4 0.00065 0.56 AML other m 2010-04-04T21:17:06.27
IV.BRMO.HHN. ML:0.0 0.00008999999999999999 0.92 AML other m 2010-04-04T21:17:07.68
IV.BRMO.HHE. ML:0.0 0.000115 0.32 AML other m 2010-04-04T21:17:07.68
SI.MOSI.BHN. ML:0.0 0.000365 0.6 AML other m 2010-04-04T21:17:09.99
SI.MOSI.BHE. ML:0.0 0.000245 0.5 AML other m 2010-04-04T21:17:09.99
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
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