Earthquake with magnitude of Md 2.8 on date 30-08-1985 and time 10:08:49 (UTC) in region 6 km S Roaschia (CN)

A magnitude Md 2.8 earthquake occured in region: 6 km S Roaschia (CN), on

  • 30-08-1985 10:08:49 (UTC)
  • 30-08-1985 12:08:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.22, 7.47 at 14 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
Roaschia CN 6 107 107
Vernante CN 6 1178 1285
Entracque CN 6 774 2059
Limone Piemonte CN 9 1485 3544
Valdieri CN 9 935 4479
Robilante CN 9 2306 6785
Roccavione CN 11 2761 9546
Borgo San Dalmazzo CN 12 12468 22014
Moiola CN 13 234 22248
Roccasparvera CN 14 741 22989
Gaiola CN 14 582 23571
Boves CN 14 9835 33406
Valloriate CN 15 109 33515
Rittana CN 16 109 33624
Vignolo CN 16 2600 36224
Peveragno CN 17 5543 41767
Demonte CN 17 2003 43770
Cervasca CN 18 5013 48783
Bernezzo CN 19 4104 52887

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SW of Cuneo (56081 inhabitants)
51 Km NW of Sanremo (54807 inhabitants)
81 Km W of Savona (61345 inhabitants)
89 Km S of Moncalieri (57294 inhabitants)
95 Km SW of Asti (76202 inhabitants)
96 Km S of Torino (890529 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
Rev 1000 Md 2.8 1985-08-30
10:08:49
44.22 7.47 14 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 12449
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-30 10:08:49 ± 0.208
Latitude 44.22 ± 0.01
Longitude 7.47 ± 0.01
Depth (km) 14 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 12449

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1387
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 212
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.00291
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 12449
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:15:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.DA9.Z. 1985-08-30T10:09:02.00 10.0 undecidable manual SG 330 0.0029 0.14 0.3
--.ROB.Z. 1985-08-30T10:09:01.00 10.0 undecidable manual SG 73 0.0027 -0.02 0.8
--.ROB.Z. 1985-08-30T10:08:56.10 10.0 undecidable manual PG 73 0.0027 0 2.6
--.DA9.Z. 1985-08-30T10:08:56.50 10.0 negative manual PG 330 0.0029 -0.09 1.7
--.STV.Z. 1985-08-30T10:08:55.20 10.0 undecidable manual SG 286 0.0009 -0.21 0.1
--.STV.Z. 1985-08-30T10:08:53.00 10.0 undecidable manual PG 286 0.0009 0.14 0.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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