INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.0 on date 11-08-2017 and time 23:22:33 (Italy) in region 3 km SE Oncino (CN)

A magnitude ML 2.0 earthquake occured in region: 3 km SE Oncino (CN), on

  • 11-08-2017 21:22:33 (UTC)
  • 11-08-2017 23:22:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.66, 7.23 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Oncino CN 4 76 76
Ostana CN 5 83 159
Paesana CN 5 2784 2943
Crissolo CN 7 168 3111
Sanfront CN 8 2395 5506
Sampeyre CN 9 1022 6528
Rifreddo CN 10 1078 7606
Gambasca CN 10 371 7977
Frassino CN 11 265 8242
Barge CN 11 7774 16016
Martiniana Po CN 12 734 16750
Envie CN 12 2074 18824
Revello CN 13 4262 23086
Melle CN 13 292 23378
Bagnolo Piemonte CN 13 6024 29402
Brossasco CN 14 1084 30486
Isasca CN 15 76 30562
Casteldelfino CN 15 157 30719
Rorà TO 15 257 30976
Brondello CN 16 290 31266
Valmala CN 16 52 31318
Lusernetta TO 16 506 31824
Bibiana TO 16 3442 35266
Pontechianale CN 16 179 35445
Pagno CN 17 585 36030
Venasca CN 17 1437 37467
Castellar CN 17 295 37762
Elva CN 17 97 37859
Luserna San Giovanni TO 17 7395 45254
Villar Pellice TO 18 1076 46330
Campiglione Fenile TO 18 1390 47720
Torre Pellice TO 18 4551 52271
Macra CN 18 59 52330
Cavour TO 18 5545 57875
Bobbio Pellice TO 19 563 58438
Bellino CN 19 109 58547
Stroppo CN 19 103 58650
San Damiano Macra CN 19 430 59080
Bricherasio TO 20 4616 63696
Celle di Macra CN 20 100 63796

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of Cuneo (56081 inhabitants)
53 Km SW of Moncalieri (57294 inhabitants)
58 Km SW of Torino (890529 inhabitants)
82 Km W of Asti (76202 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows 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
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Date and Time (UTC) Latitude Longitude Magnitude Depth (km) Published time (UTC) Author Location ID
Rev 100 2017-08-11
21:22:33
44.66 7.23 ML 2.0 11 2017-08-11
21:38:23
Sala Sismica INGV-Roma 48931181
Best location and best magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-11 21:22:33 ± 0.08
Latitude 44.66 ± 0.00
Longitude 7.23 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 48931181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 649
Semi-minor axis of confidence ellipse (meter) 330
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.42543
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 18
Magnitude information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 48931181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-08-11 21:38:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2017-08-11T21:24:23.47 3.0 undecidable manual Sn 5.28 0
IV.APEC.HHZ. 2017-08-11T21:24:22.12 3.0 undecidable manual Sn 4.27 0
IV.LIK.EHZ.01 2017-08-11T21:23:55.32 3.0 negative manual Pn -0.14 0
IV.LEOD.HNZ. 2017-08-11T21:23:37.07 3.0 undecidable manual Sn 0.28 0
IV.RIBO.EHZ.01 2017-08-11T21:23:34.23 3.0 negative manual Pg 11.2 0
IV.MRGE.HHZ. 2017-08-11T21:23:09.25 0.3 undecidable manual S 354 1.1152 90 0.05 64
GU.PCP.HHE. 2017-08-11T21:23:03.71 0.1 undecidable manual S 97 0.9452 90 -0.43 81
IV.QLNO.HHZ. 2017-08-11T21:23:01.62 0.1 undecidable manual S 112 0.8642 90 -0.15 87
GU.CANO.HHZ. 2017-08-11T21:23:00.92 0.1 undecidable manual S 122 0.8499 90 -0.41 82
GU.RORO.HHZ. 2017-08-11T21:22:59.58 0.1 undecidable manual S 132 0.8112 90 -0.6 77
GU.LSD.HHZ. 2017-08-11T21:22:59.75 0.1 undecidable manual S 355 0.8022 90 -0.16 87
CH.DIX.HHZ. 2017-08-11T21:22:58.96 0.1 undecidable manual P 5 1.4254 90 -0.52 67
FR.SAOF.HHZ.00 2017-08-11T21:22:57.28 0.3 undecidable manual S 161 0.7123 90 0.03 70
IV.MRGE.HHZ. 2017-08-11T21:22:54.13 0.3 undecidable manual P 354 1.1152 90 -0.06 62
GU.GBOS.HHZ. 2017-08-11T21:22:53.64 0.1 undecidable manual S 134 0.6043 90 -0.41 87
GU.BURY.HHN. 2017-08-11T21:22:51.38 0.3 undecidable manual P 165 0.9074 90 0.75 58
GU.TRAV.HHZ. 2017-08-11T21:22:51.22 3.0 undecidable manual P 0
MN.BNI.HHZ. 2017-08-11T21:22:51.93 0.1 undecidable manual S 315 0.5531 90 -0.59 79
GU.PCP.HHE. 2017-08-11T21:22:51.64 0.1 undecidable manual P 97 0.9452 90 0.37 85
GU.CANO.HHZ. 2017-08-11T21:22:50.13 0.1 positive manual P 122 0.8499 90 0.48 85
IV.QLNO.HHZ. 2017-08-11T21:22:50.44 0.1 negative manual P 112 0.8642 90 0.54 83
GU.RSP.HHZ. 2017-08-11T21:22:50.43 0.1 undecidable manual S 3 0.4892 90 -0.2 92
GU.ROTM.HHZ. 2017-08-11T21:22:50.13 0.1 undecidable manual P 76 0.8202 90 0.99 71
GU.LSD.HHZ. 2017-08-11T21:22:49.24 0.1 undecidable manual P 355 0.8022 90 0.41 87
GU.ENR.HHZ. 2017-08-11T21:22:49.14 0.1 undecidable manual S 162 0.4542 90 -0.46 87
GU.CIRO.HHZ. 2017-08-11T21:22:49.92 3.0 undecidable manual P 0
GU.RORO.HHZ. 2017-08-11T21:22:49.32 0.1 positive manual P 132 0.8112 90 0.34 88
GU.STV.HHZ. 2017-08-11T21:22:48.13 0.1 undecidable manual S 170 0.42 90 -0.45 88
FR.SAOF.HHZ.00 2017-08-11T21:22:47.25 0.3 undecidable manual P 161 0.7123 90 -0.04 68
IV.MONC.HHZ. 2017-08-11T21:22:46.71 0.1 undecidable manual P 50 0.6457 90 0.56 87
GU.GBOS.HHZ. 2017-08-11T21:22:45.67 0.1 undecidable manual P 134 0.6043 90 0.23 94
MN.BNI.HHZ. 2017-08-11T21:22:44.77 0.1 undecidable manual P 315 0.5531 90 0.21 96
GU.RSP.HHZ. 2017-08-11T21:22:42.80 0.1 undecidable manual P 3 0.4892 90 -0.67 79
GU.ENR.HHZ. 2017-08-11T21:22:42.82 0.1 positive manual P 162 0.4542 90 -0.05 96
GU.STV.HHZ. 2017-08-11T21:22:42.43 0.1 undecidable manual P 170 0.42 90 0.14 100
GU.PZZ.HHZ. 2017-08-11T21:22:41.03 0.1 undecidable manual S 208 0.1727 92 -0.22 97
GU.BHB.HHE. 2017-08-11T21:22:40.84 0.1 undecidable manual S 8 0.1772 92 -0.55 89
GU.BHB.HHE. 2017-08-11T21:22:38.01 0.1 undecidable manual P 8 0.1772 92 -0.13 100
GU.PZZ.HHZ. 2017-08-11T21:22:38.63 0.1 undecidable manual P 208 0.1727 92 0.58 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHE. ML:2.3 0.00138 0.74 AML other m 2017-08-11T21:22:42.97
GU.PZZ.HHN. ML:2.4 0.00171 1.54 AML other m 2017-08-11T21:22:43.08
GU.STV.HHN. ML:1.4 7.74E-5 0.36 AML other m 2017-08-11T21:22:49.73
GU.STV.HHE. ML:1.6 0.00011 1.08 AML other m 2017-08-11T21:22:50.02
GU.ENR.HHN. ML:1.8 0.0001745 0.98 AML other m 2017-08-11T21:22:50.49
GU.ENR.HHE. ML:1.9 0.0001865 0.52 AML other m 2017-08-11T21:22:51.63
MN.BNI.HHN. ML:1.4 4.54E-5 0.42 AML other m 2017-08-11T21:22:51.96
MN.BNI.HHE. ML:1.6 7.645E-5 0.5 AML other m 2017-08-11T21:22:51.98
GU.GBOS.HHN. ML:1.8 0.0001275 0.24 AML other m 2017-08-11T21:22:54.28
GU.GBOS.HHE. ML:1.8 0.0001092 0.54 AML other m 2017-08-11T21:22:54.34
IV.MONC.HHN. ML:2.1 0.000184 0.68 AML other m 2017-08-11T21:22:58.78
GU.RORO.HHN. ML:2 0.0001068 0.44 AML other m 2017-08-11T21:22:59.63
GU.RORO.HHE. ML:2.1 0.0001332 1.52 AML other m 2017-08-11T21:23:00.05
GU.LSD.HHN. ML:1.7 6.41E-5 1.64 AML other m 2017-08-11T21:23:00.82
GU.LSD.HHE. ML:1.9 9.01E-5 0.56 AML other m 2017-08-11T21:23:01.67
GU.CANO.HHE. ML:2.2 0.000191 0.42 AML other m 2017-08-11T21:23:03.30
GU.CANO.HHN. ML:2.1 0.000139 0.42 AML other m 2017-08-11T21:23:03.94
IV.MONC.HHE. ML:2 0.0001745 0.44 AML other m 2017-08-11T21:23:10.22
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://cnt.rm.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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 full SEED format Download