Earthquake with magnitude of Md 2.4 on date 12-04-1985 and time 13:30:22 (Italy) in region 2 km E San Marcello Pistoiese (PT)

A magnitude Md 2.4 earthquake occured in region: 2 km E San Marcello Pistoiese (PT), on

  • 12-04-1985 11:30:22 (UTC)
  • 12-04-1985 13:30:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.06, 10.82 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
San Marcello Pistoiese PT 2 6416 6416
Piteglio PT 5 1683 8099
Cutigliano PT 7 1488 9587
Lizzano in Belvedere BO 13 2212 11799
Marliana PT 15 3210 15009
Abetone PT 15 621 15630
Sambuca Pistoiese PT 16 1626 17256
Pistoia PT 16 90315 107571
Fanano MO 17 2989 110560
Alto Reno Terme BO 17 6960 117520
Serravalle Pistoiese PT 17 11659 129179
Massa e Cozzile PT 18 7983 137162
Gaggio Montano BO 18 4878 142040
Bagni di Lucca LU 19 6161 148201
Fiumalbo MO 19 1280 149481
Sestola MO 19 2508 151989
Montecatini-Terme PT 20 20409 172398

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NW of Pistoia (90315 inhabitants)
30 Km NW of Prato (191150 inhabitants)
35 Km NE of Lucca (89046 inhabitants)
45 Km NW of Scandicci (50609 inhabitants)
48 Km NW of Firenze (382808 inhabitants)
50 Km E of Viareggio (62467 inhabitants)
51 Km NE of Pisa (89158 inhabitants)
54 Km E of Massa (69479 inhabitants)
57 Km E of Carrara (63133 inhabitants)
64 Km SW of Bologna (386663 inhabitants)
66 Km S of Modena (184973 inhabitants)
70 Km NE of Livorno (159219 inhabitants)
72 Km S of Reggio nell'Emilia (171345 inhabitants)
79 Km W of Imola (69797 inhabitants)
79 Km E of La Spezia (93959 inhabitants)
81 Km S of Carpi (70699 inhabitants)
89 Km W of Faenza (58541 inhabitants)
91 Km SE of Parma (192836 inhabitants)
92 Km NW of Siena (53903 inhabitants)
100 Km W of Forlì (117913 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 1985-04-12
11:30:22
44.06 10.82 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 4539
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-12 11:30:22 ± 0.404
Latitude 44.06 ± 0.03
Longitude 10.82 ± 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 4539

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) 4702.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.0276
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 4539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1985-04-12T11:31:20.00 10.0 undecidable manual SN 16 0.0186 -1.92 0.1
--.RBL.Z. 1985-04-12T11:31:12.00 10.0 undecidable manual PN 37 0.0276 1.65 0.3
--.FO1.Z. 1985-04-12T11:31:08.00 10.0 undecidable manual PN 27 0.0259 0.17 1.1
--.CTI.Z. 1985-04-12T11:30:57.00 10.0 undecidable manual PN 16 0.0186 0.32 1.4
--.CH1.Z. 1985-04-12T11:30:39.50 10.0 undecidable manual PG 117 0.0083 -0.92 1.2
--.PS9.Z. 1985-04-12T11:30:38.50 10.0 undecidable manual SG 211 0.0036 1.57 0.2
--.PS9.Z. 1985-04-12T11:30:30.50 10.0 undecidable manual PG 211 0.0036 -0.2 1.8
--.BD1.Z. 1985-04-12T11:30:29.50 10.0 undecidable manual SG 270 0.0014 0.35 1
--.BD1.Z. 1985-04-12T11:30:25.00 10.0 positive manual PG 270 0.0014 -1.21 1.8
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