Earthquake with magnitude of Md 2.0 on date 26-11-1987 and time 09:37:58 (Italy) in region Confine Italia Francia (FRANCIA)

A magnitude Md 2.0 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 26-11-1987 08:37:58 (UTC)
  • 26-11-1987 09:37:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.22, 7.04 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
Sambuco CN 13 92 92
Pietraporzio CN 14 77 169
Vinadio CN 14 644 813
Aisone CN 18 248 1061
Argentera CN 19 83 1144

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km W of Cuneo (56081 inhabitants)
74 Km NW of Sanremo (54807 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 2.0 1987-11-26
08:37:58
44.22 7.04 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 58839
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-11-26 08:37:58 ± 0.24
Latitude 44.22 ± 0.01
Longitude 7.04 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 58839

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) 1669.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 252
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.00615
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 58839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:56:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.IMP.Z. 1987-11-26T08:38:22.00 10.0 undecidable manual SG 116 0.0062 -0.43 0
--.IMP.Z. 1987-11-26T08:38:12.50 10.0 undecidable manual PG 116 0.0062 0.16 0.9
--.DOI.Z. 1987-11-26T08:38:10.92 10.0 undecidable manual SG 27 0.0028 0.28 0.2
--.SOO.Z. 1987-11-26T08:38:09.40 10.0 undecidable manual SG 8 0.0025 -0.25 0.3
--.STV.Z. 1987-11-26T08:38:07.20 10.0 undecidable manual SG 82 0.0019 0.02 0.8
--.DOI.Z. 1987-11-26T08:38:05.52 10.0 undecidable manual PG 27 0.0028 -0.01 2
--.SOO.Z. 1987-11-26T08:38:04.90 10.0 undecidable manual PG 8 0.0025 -0.06 1.9
--.STV.Z. 1987-11-26T08:38:03.60 10.0 undecidable manual PG 82 0.0019 0.06 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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