Earthquake with magnitude of Md 2.0 on date 14-07-1987 and time 13:31:51 (Italy) in region 3 km NW Badia Tedalda (AR)

A magnitude Md 2.0 earthquake occured in region: 3 km NW Badia Tedalda (AR), on

  • 14-07-1987 11:31:51 (UTC)
  • 14-07-1987 13:31:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.73, 12.17 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
Badia Tedalda AR 3 1087 1087
Casteldelci RN 7 407 1494
Sestino AR 11 1355 2849
Pieve Santo Stefano AR 12 3183 6032
Pennabilli RN 13 2869 8901
Borgo Pace PU 13 606 9507
Carpegna PU 15 1674 11181
Verghereto FC 15 1907 13088
Sant'Agata Feltria RN 15 2151 15239
Mercatello sul Metauro PU 17 1378 16617
Belforte all'Isauro PU 17 769 17386
Frontino PU 17 293 17679
Caprese Michelangelo AR 18 1426 19105
Sansepolcro AR 18 15884 34989
Pietrarubbia PU 19 660 35649
Chiusi della Verna AR 19 2023 37672
Maiolo RN 20 848 38520
Montecopiolo PU 20 1128 39648

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Arezzo (99543 inhabitants)
46 Km S of Cesena (96758 inhabitants)
49 Km SW of Rimini (147750 inhabitants)
56 Km S of Forlì (117913 inhabitants)
63 Km W of Pesaro (94582 inhabitants)
66 Km SE of Faenza (58541 inhabitants)
70 Km W of Fano (60888 inhabitants)
72 Km N of Perugia (166134 inhabitants)
73 Km E of Firenze (382808 inhabitants)
76 Km S of Ravenna (159116 inhabitants)
78 Km SE of Imola (69797 inhabitants)
79 Km E of Scandicci (50609 inhabitants)
82 Km NE of Siena (53903 inhabitants)
88 Km E of Prato (191150 inhabitants)
97 Km NW of Foligno (57155 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 1987-07-14
11:31:51
43.73 12.17 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 52159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-07-14 11:31:51 ± 0.292
Latitude 43.73 ± 0.02
Longitude 12.17 ± 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 52159

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) 3051.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.0017
Epicentral distance of station farthest from the epicenter (degree) 0.0068
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 3
Type of magnitude Md
Reference to an origin 52159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:50:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ASS.Z. 1987-07-14T11:32:16.37 10.0 undecidable manual SG 151 0.0068 -1.19 0.1
--.ARV.Z. 1987-07-14T11:32:12.00 10.0 undecidable manual SG 112 0.0054 -0.8 0.3
--.ASS.Z. 1987-07-14T11:32:06.75 10.0 undecidable manual PG 151 0.0068 0.26 1.6
--.ARV.Z. 1987-07-14T11:32:04.58 10.0 undecidable manual PG 112 0.0054 0.84 0.8
--.SS9.Z. 1987-07-14T11:32:02.89 10.0 undecidable manual SG 309 0.0026 0.12 0.9
--.CRE.Z. 1987-07-14T11:32:00.31 10.0 undecidable manual SG 234 0.0017 0.83 0.4
--.SS9.Z. 1987-07-14T11:31:57.54 10.0 undecidable manual PG 309 0.0026 -0.41 1.8
--.CRE.Z. 1987-07-14T11:31:55.78 10.0 undecidable manual PG 234 0.0017 -0.27 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download