Earthquake with magnitude of Md 2.0 on date 04-08-1987 and time 09:58:00 (UTC) in region 1 km NW Vernante (CN)

A magnitude Md 2.0 earthquake occured in region: 1 km NW Vernante (CN), on

  • 04-08-1987 09:58:00 (UTC)
  • 04-08-1987 11:58:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.25, 7.52 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 1 1178 1178
Robilante CN 5 2306 3484
Roaschia CN 6 107 3591
Limone Piemonte CN 7 1485 5076
Roccavione CN 8 2761 7837
Boves CN 9 9835 17672
Borgo San Dalmazzo CN 9 12468 30140
Entracque CN 10 774 30914
Valdieri CN 11 935 31849
Peveragno CN 12 5543 37392
Roccasparvera CN 12 741 38133
Vignolo CN 13 2600 40733
Moiola CN 13 234 40967
Gaiola CN 13 582 41549
Chiusa di Pesio CN 15 3676 45225
Rittana CN 15 109 45334
Valloriate CN 15 109 45443
Cervasca CN 15 5013 50456
Cuneo CN 16 56081 106537
Beinette CN 16 3423 109960
Bernezzo CN 17 4104 114064
Roccaforte Mondovì CN 19 2085 116149
Demonte CN 19 2003 118152
Pianfei CN 20 2202 120354
Caraglio CN 20 6836 127190

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km S of Cuneo (56081 inhabitants)
52 Km NW of Sanremo (54807 inhabitants)
77 Km W of Savona (61345 inhabitants)
84 Km S of Moncalieri (57294 inhabitants)
90 Km SW of Asti (76202 inhabitants)
92 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
Md 2.0 1987-08-04
09:58:00
44.25 7.53 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 53369
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-08-04 09:58:00 ± 0.065
Latitude 44.25 ± 0.01
Longitude 7.53 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 53369

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) 841.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00437
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 53369
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:51:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FIN.Z. 1987-08-04T09:58:18.40 10.0 undecidable manual SG 94 0.0044 -0.01 0.7
--.IMI.Z. 1987-08-04T09:58:16.40 10.0 undecidable manual SG 142 0.0039 -0.09 0.7
--.PZZ.Z. 1987-08-04T09:58:15.00 10.0 undecidable manual SG 309 0.0035 -0.29 0.3
--.DOI.Z. 1987-08-04T09:58:12.80 10.0 undecidable manual SG 321 0.0028 -0.13 1
--.ROB.Z. 1987-08-04T09:58:10.30 10.0 undecidable manual SG 78 0.0023 -0.48 0.1
--.FIN.Z. 1987-08-04T09:58:10.80 10.0 undecidable manual PG 94 0.0044 -0.13 1.4
--.PZZ.Z. 1987-08-04T09:58:09.30 10.0 undecidable manual PG 309 0.0035 0.17 1.3
--.IMI.Z. 1987-08-04T09:58:09.80 10.0 undecidable manual PG 142 0.0039 -0.02 1.8
--.DOI.Z. 1987-08-04T09:58:07.80 10.0 undecidable manual PG 321 0.0028 0.03 2.1
--.ROB.Z. 1987-08-04T09:58:06.90 10.0 undecidable manual PG 78 0.0023 0.38 0.4
--.STV.Z. 1987-08-04T09:58:06.90 10.0 undecidable manual SG 269 0.0012 -0.22 0.5
--.STV.Z. 1987-08-04T09:58:04.50 10.0 undecidable manual PG 269 0.0012 0.09 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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