Earthquake with magnitude of Md 2.2 on date 29-09-1987 and time 07:12:00 (UTC) in region 6 km E Verghereto (FC)

A magnitude Md 2.2 earthquake occured in region: 6 km E Verghereto (FC), on

  • 29-09-1987 07:12:00 (UTC)
  • 29-09-1987 08:12:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.8040, 12.0760 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
Verghereto FC 6 1907 1907
Casteldelci RN 7 407 2314
Bagno di Romagna FC 10 6026 8340
Sant'Agata Feltria RN 13 2151 10491
Sarsina FC 14 3446 13937
Badia Tedalda AR 14 1087 15024
Pieve Santo Stefano AR 15 3183 18207
Pennabilli RN 15 2869 21076
Chiusi della Verna AR 16 2023 23099
Caprese Michelangelo AR 19 1426 24525
Mercato Saraceno FC 20 6886 31411

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SW of Cesena (96758 inhabitants)
41 Km NE of Arezzo (99543 inhabitants)
47 Km S of Forlì (117913 inhabitants)
49 Km SW of Rimini (147750 inhabitants)
56 Km S of Faenza (58541 inhabitants)
66 Km E of Firenze (382808 inhabitants)
68 Km SE of Imola (69797 inhabitants)
68 Km W of Pesaro (94582 inhabitants)
69 Km S of Ravenna (159116 inhabitants)
72 Km E of Scandicci (50609 inhabitants)
76 Km W of Fano (60888 inhabitants)
79 Km E of Prato (191150 inhabitants)
81 Km NE of Siena (53903 inhabitants)
81 Km NW of Perugia (166134 inhabitants)
94 Km E of Pistoia (90315 inhabitants)
97 Km SE of Bologna (386663 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 2.2 1987-09-29
07:12:00
43.804 12.076 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 56179
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-09-29 07:12:00 ± 0.137
Latitude 43.8040 ± 0.0070
Longitude 12.0760 ± 0.0117
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 56179

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) 1219.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 169
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00623
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 56179
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:53:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1987-09-29T07:12:14.50 10.0 undecidable manual PG 115 0.6882 -0.14 1
--.PGD.Z. 1987-09-29T07:12:10.50 10.0 undecidable manual SG 285 0.2553 -0.52 0
--.CRE.Z. 1987-09-29T07:12:09.30 10.0 undecidable manual SG 205 0.1998 -0.08 0.8
--.SS9.Z. 1987-09-29T07:12:08.67 10.0 undecidable manual SG 305 0.1998 -0.23 0.5
--.PGD.Z. 1987-09-29T07:12:06.80 10.0 undecidable manual PG 285 0.2553 0.19 1.4
--.SS9.Z. 1987-09-29T07:12:05.58 10.0 undecidable manual PG 305 0.1998 0.19 1.4
--.CRE.Z. 1987-09-29T07:12:05.60 10.0 undecidable manual PG 205 0.1998 0.09 1.9
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