Earthquake with magnitude of Md 2.0 on date 02-07-1987 and time 12:53:35 (Italy) in region 7 km NW Gubbio (PG)

A magnitude Md 2.0 earthquake occured in region: 7 km NW Gubbio (PG), on

  • 02-07-1987 10:53:35 (UTC)
  • 02-07-1987 12:53:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.39, 12.5 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
Gubbio PG 7 32216 32216
Pietralunga PG 8 2111 34327
Scheggia e Pascelupo PG 13 1393 35720
Cantiano PU 14 2245 37965
Montone PG 15 1680 39645
Umbertide PG 17 16681 56326
Costacciaro PG 17 1216 57542

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km N of Perugia (166134 inhabitants)
51 Km NW of Foligno (57155 inhabitants)
51 Km E of Arezzo (99543 inhabitants)
66 Km SW of Fano (60888 inhabitants)
67 Km SW of Pesaro (94582 inhabitants)
75 Km S of Rimini (147750 inhabitants)
86 Km W of Ancona (100861 inhabitants)
86 Km S of Cesena (96758 inhabitants)
93 Km N of Terni (111501 inhabitants)
95 Km E of Siena (53903 inhabitants)
100 Km SE of Forlì (117913 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 1987-07-02
10:53:35
43.39 12.51 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 49849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-07-02 10:53:35 ± 0.11
Latitude 43.39 ± 0.01
Longitude 12.51 ± 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 49849

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) 1150.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.003
Epicentral distance of station farthest from the epicenter (degree) 0.00672
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

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 49849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:48:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PGD.Z. 1987-07-02T10:54:02.00 10.0 undecidable manual SG 311 0.0067 0.38 0.1
--.PGD.Z. 1987-07-02T10:53:50.50 10.0 undecidable manual PG 311 0.0067 -0.18 1.2
--.ARV.Z. 1987-07-02T10:53:48.81 10.0 undecidable manual SG 71 0.003 0.34 0.2
--.ASS.Z. 1987-07-02T10:53:48.78 10.0 undecidable manual SG 162 0.0031 0.11 0.8
--.ASS.Z. 1987-07-02T10:53:43.19 10.0 undecidable manual PG 162 0.0031 -0.01 2.2
--.ARV.Z. 1987-07-02T10:53:42.89 10.0 undecidable manual PG 71 0.003 -0.19 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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