Earthquake with magnitude of M 2.1 on date 25-09-1985 and time 16:06:53 (Italy) in region 4 km SW Vernante (CN)

A magnitude M 2.1 earthquake occured in region: 4 km SW Vernante (CN), on

  • 25-09-1985 14:06:53 (UTC)
  • 25-09-1985 16:06:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2230, 7.5000 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
Vernante CN 4 1178 1178
Roaschia CN 6 107 1285
Limone Piemonte CN 7 1485 2770
Robilante CN 8 2306 5076
Entracque CN 8 774 5850
Valdieri CN 10 935 6785
Roccavione CN 10 2761 9546
Borgo San Dalmazzo CN 12 12468 22014
Boves CN 13 9835 31849
Moiola CN 14 234 32083
Roccasparvera CN 14 741 32824
Gaiola CN 15 582 33406
Peveragno CN 15 5543 38949
Vignolo CN 16 2600 41549
Valloriate CN 16 109 41658
Rittana CN 16 109 41767
Cervasca CN 18 5013 46780
Chiusa di Pesio CN 18 3676 50456
Demonte CN 19 2003 52459
Bernezzo CN 19 4104 56563
Cuneo CN 20 56081 112644
Beinette CN 20 3423 116067

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km S of Cuneo (56081 inhabitants)
50 Km NW of Sanremo (54807 inhabitants)
79 Km W of Savona (61345 inhabitants)
88 Km S of Moncalieri (57294 inhabitants)
94 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
Bulletin
Rev1000
M 2.1 1985-09-25
14:06:53
44.223 7.5 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 13749
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-25 14:06:53 ± 0.162
Latitude 44.2230 ± 0.0189
Longitude 7.5000 ± 0.0126
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 13749

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) 2330.3
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 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.00453
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

M:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 13749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FIN.Z. 1985-09-25T14:07:11.60 10.0 undecidable manual SG 91 0.4995 -0.46 0.3
--.IMP.Z. 1985-09-25T14:07:09.50 10.0 undecidable manual SG 137 0.4107 0.37 0.4
--.ROB.Z. 1985-09-25T14:07:05.60 10.0 undecidable manual SG 73 0.2664 0.9 0.1
--.FIN.Z. 1985-09-25T14:07:03.70 10.0 undecidable manual PG 91 0.4995 -0.67 0.4
--.IMP.Z. 1985-09-25T14:07:02.70 10.0 undecidable manual PG 137 0.4107 0.02 1.8
--.ROB.Z. 1985-09-25T14:07:00.20 10.0 undecidable manual PG 73 0.2664 0.08 2
--.STV.Z. 1985-09-25T14:06:59.80 10.0 undecidable manual SG 282 0.1221 0 0.8
--.STV.Z. 1985-09-25T14:06:57.30 10.0 undecidable manual PG 282 0.1221 0.01 2.1
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