Earthquake with magnitude of Md 2.6 on date 07-03-1985 and time 16:29:43 (UTC) in region 3 km SE San Godenzo (FI)

A magnitude Md 2.6 earthquake occured in region: 3 km SE San Godenzo (FI), on

  • 07-03-1985 16:29:43 (UTC)
  • 07-03-1985 17:29:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.91, 11.65 at 8 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
San Godenzo FI 3 1167 1167
Londa FI 9 1840 3007
Dicomano FI 10 5515 8522
Premilcuore FC 13 799 9321
Pratovecchio Stia AR 14 5845 15166
Vicchio FI 15 8044 23210
Rufina FI 16 7346 30556
Portico e San Benedetto FC 17 756 31312
Marradi FI 19 3139 34451
Montemignaio AR 19 566 35017
Pelago FI 19 7660 42677
Castel San Niccolò AR 19 2707 45384

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Firenze (382808 inhabitants)
41 Km E of Scandicci (50609 inhabitants)
44 Km E of Prato (191150 inhabitants)
46 Km SW of Faenza (58541 inhabitants)
47 Km SW of Forlì (117913 inhabitants)
50 Km S of Imola (69797 inhabitants)
53 Km NW of Arezzo (99543 inhabitants)
54 Km W of Cesena (96758 inhabitants)
59 Km E of Pistoia (90315 inhabitants)
70 Km SE of Bologna (386663 inhabitants)
70 Km NE of Siena (53903 inhabitants)
72 Km SW of Ravenna (159116 inhabitants)
75 Km W of Rimini (147750 inhabitants)
92 Km E of Lucca (89046 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 2.6 1985-03-07
16:29:43
43.91 11.65 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 3099
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-07 16:29:43 ± 0.572
Latitude 43.91 ± 0.03
Longitude 11.65 ± 0.02
Depth (km) 8 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3099

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) 3706.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 191
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.01522
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 3099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AS1.Z. 1985-03-07T16:30:21.00 10.0 undecidable manual SN 138 0.01 0.13 0.6
--.AR1.Z. 1985-03-07T16:30:19.00 10.0 undecidable manual SG 113 0.0091 0.64 0.4
--.PS9.Z. 1985-03-07T16:30:12.00 10.0 undecidable manual SG 257 0.0074 -0.41 0.6
--.MNS.Z. 1985-03-07T16:30:12.00 10.0 undecidable manual PN 153 0.0152 -1.04 0.3
--.BD1.Z. 1985-03-07T16:30:10.00 10.0 undecidable manual SG 281 0.0069 -0.45 0.6
--.AS1.Z. 1985-03-07T16:30:06.00 10.0 undecidable manual PN 138 0.01 0.97 0.5
--.AR1.Z. 1985-03-07T16:30:03.50 10.0 undecidable manual PG 113 0.0091 -0.08 1.6
--.PS9.Z. 1985-03-07T16:30:01.50 10.0 undecidable manual PG 257 0.0074 1.36 0.2
--.BD1.Z. 1985-03-07T16:29:58.50 10.0 undecidable manual PG 281 0.0069 -0.51 1.3
--.CH1.Z. 1985-03-07T16:29:57.00 10.0 undecidable manual SG 142 0.0032 0 1.1
--.FIR.N. 1985-03-07T16:29:56.00 10.0 undecidable manual SG 244 0.0028 0.23 0.7
--.CH1.Z. 1985-03-07T16:29:51.00 10.0 negative manual PG 142 0.0032 -0.25 3.3
--.FIR.Z. 1985-03-07T16:29:50.50 10.0 undecidable manual PG 244 0.0028 -0.03 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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