Earthquake with magnitude of Md 2.0 on date 07-05-1985 and time 22:10:55 (UTC) in region 3 km SW Montelupo Fiorentino (FI)

A magnitude Md 2.0 earthquake occured in region: 3 km SW Montelupo Fiorentino (FI), on

  • 07-05-1985 22:10:55 (UTC)
  • 08-05-1985 00:10:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.71, 10.99 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
Montelupo Fiorentino FI 3 14098 14098
Empoli FI 4 48109 62207
Capraia e Limite FI 4 7670 69877
Montespertoli FI 10 13537 83414
Vinci FI 10 14604 98018
Cerreto Guidi FI 11 10870 108888
Castelfiorentino FI 11 17504 126392
Lastra a Signa FI 12 20156 146548
San Miniato PI 12 27934 174482
Signa FI 12 19179 193661
Carmignano PO 12 14450 208111
Poggio a Caiano PO 13 10007 218118
Lamporecchio PT 15 7508 225626
Fucecchio FI 15 23618 249244
Quarrata PT 16 26190 275434
Larciano PT 16 6394 281828
Scandicci FI 16 50609 332437
San Casciano in Val di Pesa FI 16 17062 349499
Campi Bisenzio FI 17 46166 395665
Santa Croce sull'Arno PI 17 14601 410266
Certaldo FI 18 16121 426387
Montaione FI 18 3700 430087
Gambassi Terme FI 19 4870 434957
Montopoli in Val d'Arno PI 19 11148 446105
Castelfranco di Sotto PI 20 13427 459532

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km W of Scandicci (50609 inhabitants)
21 Km SW of Prato (191150 inhabitants)
22 Km W of Firenze (382808 inhabitants)
26 Km S of Pistoia (90315 inhabitants)
42 Km E of Lucca (89046 inhabitants)
48 Km E of Pisa (89158 inhabitants)
51 Km NW of Siena (53903 inhabitants)
58 Km E of Livorno (159219 inhabitants)
62 Km E of Viareggio (62467 inhabitants)
77 Km W of Arezzo (99543 inhabitants)
78 Km E of Massa (69479 inhabitants)
83 Km E of Carrara (63133 inhabitants)
92 Km SW of Bologna (386663 inhabitants)
92 Km SW of Imola (69797 inhabitants)
96 Km SW 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 2.0 1985-05-07
22:10:55
43.71 10.99 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 6009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-07 22:10:55 ± 0.199
Latitude 43.71 ± 0.02
Longitude 10.99 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 6009

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) 2623.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
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) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00623
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

Field Value
Value 2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 6009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:10:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CH1.Z. 1985-05-07T22:11:09.30 10.0 undecidable manual PG 96 0.0062 -0.38 0.6
--.BD1.Z. 1985-05-07T22:11:05.00 10.0 undecidable manual PG 321 0.004 -0.25 1.2
--.FIR.Z. 1985-05-07T22:11:04.00 10.0 undecidable manual SG 70 0.0018 -0.04 1.1
--.PS9.Z. 1985-05-07T22:11:03.30 10.0 undecidable manual PG 272 0.003 0.19 1.5
--.FIR.Z. 1985-05-07T22:11:01.00 10.0 undecidable manual PG 70 0.0018 0.48 0.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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