Earthquake with magnitude of Md 2.4 on date 23-07-1985 and time 06:37:03 (Italy) in region 5 km W Cantagallo (PO)

A magnitude Md 2.4 earthquake occured in region: 5 km W Cantagallo (PO), on

  • 23-07-1985 04:37:03 (UTC)
  • 23-07-1985 06:37:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.05, 11.06 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
Cantagallo PO 5 3105 3105
Sambuca Pistoiese PT 8 1626 4731
Vernio PO 8 6060 10791
Vaiano PO 10 9895 20686
Montale PT 13 10737 31423
Castel di Casio BO 13 3448 34871
Castiglione dei Pepoli BO 13 5648 40519
Alto Reno Terme BO 14 6960 47479
Montemurlo PO 14 18456 65935
Camugnano BO 14 1885 67820
Barberino di Mugello FI 16 10836 78656
Agliana PT 17 17525 96181
Pistoia PT 17 90315 186496
Lizzano in Belvedere BO 18 2212 188708
Prato PO 19 191150 379858
Gaggio Montano BO 19 4878 384736

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NE of Pistoia (90315 inhabitants)
19 Km N of Prato (191150 inhabitants)
34 Km NW of Scandicci (50609 inhabitants)
35 Km NW of Firenze (382808 inhabitants)
50 Km E of Lucca (89046 inhabitants)
55 Km SW of Bologna (386663 inhabitants)
62 Km SW of Imola (69797 inhabitants)
64 Km NE of Pisa (89158 inhabitants)
67 Km S of Modena (184973 inhabitants)
68 Km E of Viareggio (62467 inhabitants)
71 Km W of Faenza (58541 inhabitants)
73 Km E of Massa (69479 inhabitants)
77 Km E of Carrara (63133 inhabitants)
80 Km SE of Reggio nell'Emilia (171345 inhabitants)
81 Km W of Forlì (117913 inhabitants)
82 Km NE of Livorno (159219 inhabitants)
83 Km S of Carpi (70699 inhabitants)
84 Km N of Siena (53903 inhabitants)
93 Km NW of Arezzo (99543 inhabitants)
95 Km W of Cesena (96758 inhabitants)
98 Km SW of Ferrara (133155 inhabitants)
98 Km E of La Spezia (93959 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 1985-07-23
04:37:03
44.05 11.06 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 10649
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-07-23 04:37:03 ± 0.89
Latitude 44.05 ± 0.03
Longitude 11.06 ± 0.02
Depth (km) 8 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 10649

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) 3837.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.01319
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 10649
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AR1.Z. 1985-07-23T04:37:49.50 10.0 undecidable manual SN 111 0.0132 0.5 0.6
--.CO9.Z. 1985-07-23T04:37:46.00 10.0 undecidable manual SN 302 0.0121 -0.35 0.7
--.AR1.Z. 1985-07-23T04:37:31.00 10.0 undecidable manual PN 111 0.0132 1.35 0.6
--.CH1.Z. 1985-07-23T04:37:29.00 10.0 undecidable manual SG 123 0.0069 -1.06 0.4
--.CO9.Z. 1985-07-23T04:37:27.00 10.0 undecidable manual PN 302 0.0121 -1.13 0.9
--.PS9.Z. 1985-07-23T04:37:21.50 10.0 undecidable manual SG 229 0.0045 -0.16 0.9
--.CH1.Z. 1985-07-23T04:37:18.00 10.0 undecidable manual PG 123 0.0069 -0.71 1.6
--.BD1.Z. 1985-07-23T04:37:17.00 10.0 undecidable manual SG 272 0.0029 0.92 0.5
--.PS9.Z. 1985-07-23T04:37:13.00 10.0 undecidable manual PG 229 0.0045 -0.87 1.5
--.FIR.Z. 1985-07-23T04:37:11.00 10.0 undecidable manual PG 152 0.0028 0.77 1.8
--.BD1.Z. 1985-07-23T04:37:11.50 10.0 undecidable manual PG 272 0.0029 0.85 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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