Earthquake with magnitude of Md 2.4 on date 04-11-1986 and time 07:59:42 (Italy) in region 3 km SW Castelnuovo Berardenga (SI)

A magnitude Md 2.4 earthquake occured in region: 3 km SW Castelnuovo Berardenga (SI), on

  • 04-11-1986 06:59:42 (UTC)
  • 04-11-1986 07:59:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.33, 11.48 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
Castelnuovo Berardenga SI 3 9097 9097
Rapolano Terme SI 11 5249 14346
Monteroni d'Arbia SI 12 9088 23434
Asciano SI 12 7118 30552
Siena SI 12 53903 84455
Gaiole in Chianti SI 16 2758 87213
Murlo SI 19 2389 89602
Monte San Savino AR 20 8743 98345
Radda in Chianti SI 20 1613 99958

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km E of Siena (53903 inhabitants)
36 Km W of Arezzo (99543 inhabitants)
53 Km SE of Firenze (382808 inhabitants)
54 Km SE of Scandicci (50609 inhabitants)
69 Km SE of Prato (191150 inhabitants)
70 Km NE of Grosseto (82087 inhabitants)
78 Km W of Perugia (166134 inhabitants)
81 Km SE of Pistoia (90315 inhabitants)
97 Km E of Pisa (89158 inhabitants)
98 Km SE of Lucca (89046 inhabitants)
98 Km E of Livorno (159219 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 2.4 1986-11-04
06:59:42
43.33 11.48 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 36669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-11-04 06:59:42 ± 0.659
Latitude 43.33 ± 0.05
Longitude 11.48 ± 0.04
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 36669

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) 5919.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 212
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00397
Epicentral distance of station farthest from the epicenter (degree) 0.00963
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 36669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:36:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BDI.Z. 1986-11-04T07:00:15.50 10.0 undecidable manual SG 319 0.0087 0.26 0.7
--.ARV.Z. 1986-11-04T07:00:03.70 10.0 undecidable manual PN 80 0.0096 0.85 0.5
--.BDI.Z. 1986-11-04T07:00:01.00 10.0 undecidable manual PG 319 0.0087 -0.21 1.6
--.ASS.Z. 1986-11-04T06:59:59.50 10.0 undecidable manual PG 107 0.008 -0.19 1
--.CRE.Z. 1986-11-04T06:59:58.00 10.0 undecidable manual SG 49 0.004 -0.35 0.4
--.CRE.Z. 1986-11-04T06:59:51.50 10.0 undecidable manual PG 49 0.004 0.04 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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