Earthquake with magnitude of Md 2.2 on date 28-05-1992 and time 12:45:05 (Italy) in region 3 km S Firenzuola (FI)

A magnitude Md 2.2 earthquake occured in region: 3 km S Firenzuola (FI), on

  • 28-05-1992 10:45:05 (UTC)
  • 28-05-1992 12:45:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.09, 11.37 at 5 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
Firenzuola FI 3 4726 4726
Barberino di Mugello FI 14 10836 15562
Palazzuolo sul Senio FI 15 1154 16716
Scarperia e San Piero FI 15 12217 28933
Borgo San Lorenzo FI 15 18211 47144
Monghidoro BO 15 3749 50893
Vernio PO 17 6060 56953
Castel del Rio BO 18 1246 58199
San Benedetto Val di Sambro BO 18 4315 62514
Castiglione dei Pepoli BO 18 5648 68162
Vicchio FI 19 8044 76206
Marradi FI 20 3139 79345

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NE of Prato (191150 inhabitants)
37 Km N of Firenze (382808 inhabitants)
40 Km NE of Scandicci (50609 inhabitants)
40 Km E of Pistoia (90315 inhabitants)
40 Km SW of Imola (69797 inhabitants)
45 Km S of Bologna (386663 inhabitants)
47 Km W of Faenza (58541 inhabitants)
56 Km W of Forlì (117913 inhabitants)
70 Km W of Cesena (96758 inhabitants)
71 Km SE of Modena (184973 inhabitants)
75 Km E of Lucca (89046 inhabitants)
76 Km W of Ravenna (159116 inhabitants)
81 Km NW of Arezzo (99543 inhabitants)
85 Km S of Ferrara (133155 inhabitants)
86 Km N of Siena (53903 inhabitants)
86 Km SE of Carpi (70699 inhabitants)
88 Km E of Pisa (89158 inhabitants)
90 Km SE of Reggio nell'Emilia (171345 inhabitants)
93 Km E of Viareggio (62467 inhabitants)
96 Km W of Rimini (147750 inhabitants)
98 Km E of Massa (69479 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 2.2
ML-VAX 1.6
1992-05-28
10:45:05
44.09 11.37 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 165939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1992-05-28 10:45:05 ± 0.608
Latitude 44.09 ± 0.06
Longitude 11.37 ± 0.04
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 165939

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) 7691.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00291
Epicentral distance of station farthest from the epicenter (degree) 0.00639
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 165939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:35:14

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 7
Type of magnitude ML
Reference to an origin 165939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1992-05-28T10:45:27.78 10.0 undecidable manual SG 138 0.0057 -0.38 0.7
--.BDI.Z. 1992-05-28T10:45:25.00 10.0 undecidable manual SG 267 0.0049 -0.75 0.6
--.MME.Z. 1992-05-28T10:45:24.15 10.0 undecidable manual SG 282 0.0044 0.46 0.7
--.PII.Z. 1992-05-28T10:45:20.27 10.0 undecidable manual PG 239 0.0064 0.36 1.5
--.GU9.Z. 1992-05-28T10:45:19.83 10.0 undecidable manual PG 295 0.0055 1.68 0.4
--.PGD.Z. 1992-05-28T10:45:19.77 10.0 undecidable manual SG 130 0.0029 1.79 0.1
--.SFI.Z. 1992-05-28T10:45:19.10 10.0 undecidable manual SG 118 0.0035 -1.22 0.4
--.CRE.Z. 1992-05-28T10:45:18.50 10.0 undecidable manual PG 138 0.0057 0.1 1.7
--.BDI.Z. 1992-05-28T10:45:16.90 10.0 undecidable manual PG 267 0.0049 -0.11 1.9
--.MME.Z. 1992-05-28T10:45:14.80 10.0 undecidable manual PG 282 0.0044 -1.73 0.4
--.SFI.Z. 1992-05-28T10:45:13.33 10.0 undecidable manual PG 118 0.0035 -0.49 1.7
--.PGD.Z. 1992-05-28T10:45:12.74 10.0 undecidable manual PG 130 0.0029 0.22 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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