Earthquake with magnitude of ML 2.0 on date 23-03-2009 and time 21:01:09 (Italy) in region 3 km W San Damiano Macra (CN)

A magnitude ML 2.0 earthquake occured in region: 3 km W San Damiano Macra (CN), on

  • 23-03-2009 20:01:09 (UTC)
  • 23-03-2009 21:01:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.4930, 7.2240 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
San Damiano Macra CN 3 430 430
Celle di Macra CN 4 100 530
Macra CN 4 59 589
Cartignano CN 5 190 779
Stroppo CN 8 103 882
Castelmagno CN 9 66 948
Pradleves CN 9 250 1198
Roccabruna CN 10 1585 2783
Frassino CN 10 265 3048
Sampeyre CN 10 1022 4070
Marmora CN 11 68 4138
Melle CN 11 292 4430
Valmala CN 11 52 4482
Dronero CN 12 7035 11517
Elva CN 12 97 11614
Canosio CN 12 80 11694
Monterosso Grana CN 12 505 12199
Villar San Costanzo CN 13 1547 13746
Montemale di Cuneo CN 13 241 13987
Prazzo CN 13 170 14157
Brossasco CN 14 1084 15241
Valgrana CN 16 786 16027
Venasca CN 16 1437 17464
Isasca CN 16 76 17540
Casteldelfino CN 16 157 17697
Rossana CN 18 908 18605
Caraglio CN 18 6836 25441
Gambasca CN 18 371 25812
Acceglio CN 19 162 25974
Brondello CN 19 290 26264
Sanfront CN 19 2395 28659
Martiniana Po CN 19 734 29393
Bellino CN 19 109 29502
Aisone CN 20 248 29750

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Cuneo (56081 inhabitants)
67 Km SW of Moncalieri (57294 inhabitants)
74 Km SW of Torino (890529 inhabitants)
87 Km NW of Sanremo (54807 inhabitants)
90 Km SW of Asti (76202 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 1.9
ML 2.0
2009-03-23
20:01:09
44.493 7.224 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 751969
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-03-23 20:01:09 ± 0.14
Latitude 44.4930 ± 0.0081
Longitude 7.2240 ± 0.0202
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 751969

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1670
Semi-minor axis of confidence ellipse (meter) 851
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 1835.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
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) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.65561
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.6
Num. used stations
Type of magnitude ML
Reference to an origin 751969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:13:05

Md:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 751969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:13:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RSP.HHE. 2009-03-23T20:01:31.76 0.1 undecidable manual Sg 3 72.7716 0.12 92
GU.RSP.HHE. 2009-03-23T20:01:22.27 0.1 undecidable manual Pg 3 72.7716 -0.032 93
GU.BHB.HHE. 2009-03-23T20:01:21.96 0.1 undecidable manual Sg 5 38.1285 -0.423 92
GU.STV.HHZ. 2009-03-23T20:01:19.44 0.1 undecidable manual Sg 164 28.6491 -0.417 93
GU.BHB.HHE. 2009-03-23T20:01:17.25 0.1 undecidable manual Pg 5 38.1285 0.288 94
GU.STV.HHZ. 2009-03-23T20:01:15.89 0.1 undecidable manual Pg 164 28.6491 0.389 94
GU.PZZ.HHZ. 2009-03-23T20:01:13.89 0.1 undecidable manual Sg 280 8.6802 -0.302 99
IV.DOI.HHZ. 2009-03-23T20:01:12.85 0.1 undecidable manual Sg 55 2.1978 -0.307 100
GU.PZZ.HHZ. 2009-03-23T20:01:12.56 0.1 undecidable manual Pg 280 8.6802 0.33 98
IV.DOI.HHZ. 2009-03-23T20:01:11.96 0.1 undecidable manual Pg 55 2.1978 0.326 100
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