Earthquake with magnitude of Md 2.3 on date 28-05-1992 and time 18:39:33 (Italy) in region 6 km NE Firenzuola (FI)

A magnitude Md 2.3 earthquake occured in region: 6 km NE Firenzuola (FI), on

  • 28-05-1992 16:39:33 (UTC)
  • 28-05-1992 18:39:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.15, 11.44 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 7 4726 4726
Castel del Rio BO 8 1246 5972
Palazzuolo sul Senio FI 9 1154 7126
Monghidoro BO 13 3749 10875
Fontanelice BO 15 1943 12818
Marradi FI 16 3139 15957
Casola Valsenio RA 16 2617 18574
Loiano BO 16 4294 22868
Borgo Tossignano BO 18 3288 26156
San Benedetto Val di Sambro BO 18 4315 30471
Monzuno BO 20 6328 36799
Monterenzio BO 20 6035 42834

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SW of Imola (69797 inhabitants)
38 Km W of Faenza (58541 inhabitants)
39 Km S of Bologna (386663 inhabitants)
41 Km NE of Prato (191150 inhabitants)
45 Km NE of Firenze (382808 inhabitants)
48 Km W of Forlì (117913 inhabitants)
49 Km NE of Scandicci (50609 inhabitants)
49 Km NE of Pistoia (90315 inhabitants)
64 Km W of Cesena (96758 inhabitants)
67 Km W of Ravenna (159116 inhabitants)
69 Km SE of Modena (184973 inhabitants)
77 Km S of Ferrara (133155 inhabitants)
83 Km E of Lucca (89046 inhabitants)
83 Km SE of Carpi (70699 inhabitants)
84 Km NW of Arezzo (99543 inhabitants)
89 Km SE of Reggio nell'Emilia (171345 inhabitants)
90 Km W of Rimini (147750 inhabitants)
93 Km N of Siena (53903 inhabitants)
97 Km NE of Pisa (89158 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 2.3
ML-VAX 1.6
1992-05-28
16:39:33
44.15 11.45 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 166309
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1992-05-28 16:39:33 ± 0.488
Latitude 44.15 ± 0.04
Longitude 11.45 ± 0.03
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 166309

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) 4915
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 215
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.003
Epicentral distance of station farthest from the epicenter (degree) 0.00704
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 166309
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:35:33

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 6
Type of magnitude ML
Reference to an origin 166309
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
--.PII.Z. 1992-05-28T16:40:00.19 10.0 undecidable manual SG 237 0.007 -1.13 0.1
--.CRE.Z. 1992-05-28T16:39:56.66 10.0 undecidable manual SG 145 0.0057 0 0.8
--.BDI.Z. 1992-05-28T16:39:55.88 10.0 undecidable manual SG 262 0.0055 0.2 0.7
--.MME.Z. 1992-05-28T16:39:53.96 10.0 undecidable manual SG 274 0.0048 0.84 0.2
--.PII.Z. 1992-05-28T16:39:50.50 10.0 undecidable manual PG 237 0.007 0.67 0.8
--.SFI.Z. 1992-05-28T16:39:47.87 10.0 undecidable manual SG 130 0.0034 0.01 0.9
--.PGD.Z. 1992-05-28T16:39:47.30 10.0 undecidable manual SG 144 0.003 0.98 0.1
--.CRE.Z. 1992-05-28T16:39:46.39 10.0 undecidable manual PG 145 0.0057 -0.3 1.7
--.BDI.Z. 1992-05-28T16:39:45.51 10.0 undecidable manual PG 262 0.0055 -0.61 1
--.MME.Z. 1992-05-28T16:39:44.67 10.0 undecidable manual PG 274 0.0048 0.02 2.1
--.SFI.Z. 1992-05-28T16:39:41.15 10.0 undecidable manual PG 130 0.0034 -0.46 1.4
--.PGD.Z. 1992-05-28T16:39:40.70 10.0 undecidable manual PG 144 0.003 -0.02 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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