Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.0 on date 18-08-2011 and time 15:58:01 (Italy) in region 4 km N Demonte (CN)

A magnitude Md 2.0 earthquake occured in region: 4 km N Demonte (CN), on

  • 18-08-2011 13:58:01 (UTC)
  • 18-08-2011 15:58:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3510, 7.2990 at 17 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
Demonte CN 4 2003 2003
Valloriate CN 6 109 2112
Monterosso Grana CN 7 505 2617
Aisone CN 7 248 2865
Pradleves CN 8 250 3115
Moiola CN 8 234 3349
Rittana CN 8 109 3458
Gaiola CN 9 582 4040
Valgrana CN 9 786 4826
Castelmagno CN 10 66 4892
Vinadio CN 11 644 5536
Valdieri CN 11 935 6471
Roccasparvera CN 11 741 7212
Montemale di Cuneo CN 11 241 7453
Bernezzo CN 12 4104 11557
Caraglio CN 13 6836 18393
Vignolo CN 14 2600 20993
Dronero CN 14 7035 28028
Cervasca CN 14 5013 33041
Cartignano CN 14 190 33231
Roccabruna CN 14 1585 34816
Entracque CN 15 774 35590
Roccavione CN 15 2761 38351
Borgo San Dalmazzo CN 15 12468 50819
Roaschia CN 15 107 50926
San Damiano Macra CN 16 430 51356
Villar San Costanzo CN 16 1547 52903
Celle di Macra CN 18 100 53003
Sambuco CN 18 92 53095
Robilante CN 18 2306 55401
Macra CN 19 59 55460

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Cuneo (56081 inhabitants)
71 Km NW of Sanremo (54807 inhabitants)
79 Km SW of Moncalieri (57294 inhabitants)
86 Km SW of Torino (890529 inhabitants)
94 Km SW of Asti (76202 inhabitants)
94 Km W of Savona (61345 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 2.0 2011-08-18
13:58:01		 44.351 7.299 17 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1273919
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-18 13:58:01 ± 0.27
Latitude 44.3510 ± 0.0099
Longitude 7.2990 ± 0.0226
Depth (km) 17 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1273919

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1583
Semi-minor axis of confidence ellipse (meter) 1184
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 2109.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 11
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.59895
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1273919
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:09:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MAGA.HHE. 2011-08-18T13:58:57.65 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHZ. 2011-08-18T13:58:55.79 10.0 undecidable manual Pg 0 0 0
IV.GMB.BHZ. 2011-08-18T13:58:44.84 10.0 undecidable manual Pg 0 0 0
IV.LAV9.HHZ. 2011-08-18T13:58:41.88 10.0 undecidable manual Pg 0 0 0
IV.MTGR.SHZ. 2011-08-18T13:58:39.09 10.0 undecidable manual Pg 0 0 0
CH.PLONS.HHN. 2011-08-18T13:58:21.07 10.0 undecidable manual Pg 0 0 0
IV.IMI.HHN. 2011-08-18T13:58:21.80 10.0 undecidable manual Pg 0 0 0
GU.RORO.HHE. 2011-08-18T13:58:21.33 0.6 undecidable manual Sg 113 66.4779 -0.193 44
GU.NEGI.HHN. 2011-08-18T13:58:17.76 10.0 undecidable manual Pg 0 0 0
GU.RORO.HHE. 2011-08-18T13:58:13.22 0.1 undecidable manual Pg 113 66.4779 0.268 90
GU.BHB.HHE. 2011-08-18T13:58:10.31 0.3 undecidable manual Pg 357 53.8017 -0.702 58
GU.PZZ.HHZ. 2011-08-18T13:58:09.82 0.3 undecidable manual Sg 320 22.5552 -0.284 70
GU.ENR.HHZ. 2011-08-18T13:58:08.46 0.1 undecidable manual Sg 145 16.7721 -0.319 92
IV.DOI.HHZ. 2011-08-18T13:58:08.89 0.1 undecidable manual Sg 346 17.4714 -0.037 99
GU.STV.HHZ. 2011-08-18T13:58:07.55 0.1 undecidable manual Sg 170 11.877 -0.247 94
IV.DOI.HHZ. 2011-08-18T13:58:06.01 0.1 undecidable manual Pg 346 17.4714 0.332 97
GU.PZZ.HHZ. 2011-08-18T13:58:06.59 0.3 undecidable manual Pg 320 22.5552 0.231 73
GU.STV.HHZ. 2011-08-18T13:58:05.30 0.1 undecidable manual Pg 170 11.877 0.273 100
GU.ENR.HHZ. 2011-08-18T13:58:05.82 0.1 undecidable manual Pg 145 16.7721 0.226 100
IV.HAGA.HHN. 2011-08-18T13:58:00.13 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