Earthquake with magnitude of ML 0.9 on date 21-07-2006 and time 12:37:52 (UTC) in region 4 km NW Chiesa in Valmalenco (SO)

A magnitude ML 0.9 earthquake occured in region: 4 km NW Chiesa in Valmalenco (SO), on

  • 21-07-2006 12:37:52 (UTC)
  • 21-07-2006 14:37:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.3030, 9.8310 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
Chiesa in Valmalenco SO 5 2514 2514
Caspoggio SO 5 1411 3925
Lanzada SO 5 1341 5266
Torre di Santa Maria SO 8 773 6039
Spriana SO 10 97 6136
Castione Andevenno SO 15 1575 7711
Postalesio SO 15 657 8368
Montagna in Valtellina SO 15 3032 11400
Sondrio SO 15 21778 33178
Poggiridenti SO 16 1924 35102
Berbenno di Valtellina SO 16 4210 39312
Caiolo SO 17 1085 40397
Tresivio SO 17 2030 42427
Albosaggia SO 17 3094 45521
Cedrasco SO 18 460 45981
Faedo Valtellino SO 18 566 46547
Buglio in Monte SO 18 2016 48563
Piateda SO 18 2219 50782
Val Masino SO 18 908 51690
Fusine SO 18 579 52269
Ponte in Valtellina SO 18 2362 54631
Colorina SO 18 1410 56041
Chiuro SO 19 2534 58575
Ardenno SO 20 3262 61837

Municipalities with at least 50000 inhabitants

An earthquake occurred to
69 Km N of Bergamo (119381 inhabitants)
79 Km NE of Como (84495 inhabitants)
90 Km NW of Brescia (196480 inhabitants)
91 Km NE of Monza (122671 inhabitants)
95 Km NE of Varese (80799 inhabitants)
96 Km NE of Cinisello Balsamo (75078 inhabitants)
97 Km NE of Sesto San Giovanni (81608 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
ML 0.9
2006-07-21
12:37:52
46.303 9.831 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 581599
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-07-21 12:37:52 ± 0.43
Latitude 46.3030 ± 0.0306
Longitude 9.8310 ± 0.0182
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 581599

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3368
Semi-minor axis of confidence ellipse (meter) 1421
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 360
Circular confidence region, given by single value of horizontal uncertainty (meter) 3677.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 232
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.62
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47844
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 581599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:08:35

Md:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 581599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:08:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.DAVOX.HHE. 2006-07-21T12:38:08.98 0.3 undecidable manual Sg 4 53.1024 -0.109 36
IV.BRMO.BHZ. 2006-07-21T12:38:06.23 0.3 undecidable manual Sg 65 45.7209 -0.872 29
MN.TUE.HHZ. 2006-07-21T12:38:05.53 0.1 undecidable manual Sg 297 41.5251 -0.467 46
CH.DAVOX.HHE. 2006-07-21T12:38:02.35 0.1 undecidable manual Pg 4 53.1024 0.395 91
MN.TUE.HHZ. 2006-07-21T12:38:00.22 0.1 undecidable manual Pg 297 41.5251 0.048 100
IV.BRMO.BHZ. 2006-07-21T12:38:00.91 0.1 undecidable manual Pg 65 45.7209 0.101 98
IV.FIU.EHZ. 2006-07-21T12:37:53.86 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