Earthquake with magnitude of Md 2.5 on date 03-12-1985 and time 13:43:02 (Italy) in region 5 km W Piteglio (PT)

A magnitude Md 2.5 earthquake occured in region: 5 km W Piteglio (PT), on

  • 03-12-1985 12:43:02 (UTC)
  • 03-12-1985 13:43:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.03, 10.71 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
Piteglio PT 5 1683 1683
San Marcello Pistoiese PT 8 6416 8099
Cutigliano PT 9 1488 9587
Bagni di Lucca LU 9 6161 15748
Marliana PT 12 3210 18958
Villa Basilica LU 12 1633 20591
Abetone PT 13 621 21212
Massa e Cozzile PT 14 7983 29195
Pescia PT 14 19644 48839
Borgo a Mozzano LU 14 6994 55833
Coreglia Antelminelli LU 15 5215 61048
Uzzano PT 16 5770 66818
Buggiano PT 17 8825 75643
Montecatini-Terme PT 17 20409 96052
Serravalle Pistoiese PT 17 11659 107711
Fiumalbo MO 17 1280 108991
Pieve a Nievole PT 18 9266 118257
Barga LU 18 10034 128291
Monsummano Terme PT 20 21338 149629

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Pistoia (90315 inhabitants)
26 Km NE of Lucca (89046 inhabitants)
36 Km W of Prato (191150 inhabitants)
41 Km E of Viareggio (62467 inhabitants)
43 Km NE of Pisa (89158 inhabitants)
45 Km E of Massa (69479 inhabitants)
49 Km NW of Scandicci (50609 inhabitants)
49 Km E of Carrara (63133 inhabitants)
53 Km NW of Firenze (382808 inhabitants)
62 Km NE of Livorno (159219 inhabitants)
71 Km E of La Spezia (93959 inhabitants)
71 Km S of Modena (184973 inhabitants)
72 Km SW of Bologna (386663 inhabitants)
75 Km S of Reggio nell'Emilia (171345 inhabitants)
85 Km S of Carpi (70699 inhabitants)
88 Km W of Imola (69797 inhabitants)
91 Km SE of Parma (192836 inhabitants)
94 Km NW of Siena (53903 inhabitants)
98 Km W of Faenza (58541 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 2.5 1985-12-03
12:43:02
44.03 10.71 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 17359
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-03 12:43:02 ± 0.355
Latitude 44.03 ± 0.05
Longitude 10.71 ± 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 17359

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) 6580.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
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) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.00882
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 17359
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1985-12-03T12:43:35.50 10.0 undecidable manual SG 114 0.0088 -0.61 0.3
--.CRE.Z. 1985-12-03T12:43:22.00 10.0 undecidable manual PG 114 0.0088 0.09 1.1
--.PS9.Z. 1985-12-03T12:43:13.80 10.0 undecidable manual SG 202 0.003 -1.38 0
--.PS9.Z. 1985-12-03T12:43:10.80 10.0 undecidable manual PG 202 0.003 0.98 0.4
--.BDI.Z. 1985-12-03T12:43:07.00 10.0 undecidable manual SG 292 0.0007 -0.27 0.9
--.BDI.Z. 1985-12-03T12:43:05.20 10.0 positive manual PG 292 0.0007 -0.06 3.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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