Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.2 on date 24-12-1992 and time 23:41:13 (UTC) in region 5 km NE Vaiano (PO)

A magnitude Md 2.2 earthquake occured in region: 5 km NE Vaiano (PO), on

  • 24-12-1992 23:41:13 (UTC)
  • 25-12-1992 00:41:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0000, 11.1730 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Vaiano PO 5 9895 9895
Barberino di Mugello FI 5 10836 20731
Cantagallo PO 6 3105 23836
Vernio PO 6 6060 29896
Scarperia e San Piero FI 13 12217 42113
Montemurlo PO 13 18456 60569
Vaglia FI 14 5073 65642
Montale PT 14 10737 76379
Prato PO 15 191150 267529
Calenzano FI 15 17489 285018
Castiglione dei Pepoli BO 16 5648 290666
Agliana PT 17 17525 308191
Borgo San Lorenzo FI 18 18211 326402
Sambuca Pistoiese PT 18 1626 328028
Sesto Fiorentino FI 19 48958 376986
Campi Bisenzio FI 20 46166 423152

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NE of Prato (191150 inhabitants)
22 Km E of Pistoia (90315 inhabitants)
26 Km N of Firenze (382808 inhabitants)
27 Km N of Scandicci (50609 inhabitants)
56 Km E of Lucca (89046 inhabitants)
57 Km S of Bologna (386663 inhabitants)
59 Km SW of Imola (69797 inhabitants)
65 Km W of Faenza (58541 inhabitants)
69 Km E of Pisa (89158 inhabitants)
74 Km W of Forlì (117913 inhabitants)
75 Km S of Modena (184973 inhabitants)
75 Km E of Viareggio (62467 inhabitants)
77 Km N of Siena (53903 inhabitants)
82 Km NW of Arezzo (99543 inhabitants)
83 Km E of Massa (69479 inhabitants)
85 Km NE of Livorno (159219 inhabitants)
86 Km E of Carrara (63133 inhabitants)
87 Km W of Cesena (96758 inhabitants)
89 Km SE of Reggio nell'Emilia (171345 inhabitants)
90 Km S of Carpi (70699 inhabitants)
94 Km W of Ravenna (159116 inhabitants)
100 Km SW of Ferrara (133155 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
Bulletin
Rev1000 		Md 2.2
ML-VAX 1.7 		1992-12-24
23:41:13		 44 11.173 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 177719
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1992-12-24 23:41:13 ± 0.139
Latitude 44.0000 ± 0.0144
Longitude 11.1730 ± 0.0107
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 177719

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) 1810.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.00340
Epicentral distance of station farthest from the epicenter (degree) 0.00607
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 177719
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:46:36

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 6
Type of magnitude ML
Reference to an origin 177719
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(km) Takeoff_angle Residual Weight
--.CRE.Z. 1992-12-24T23:41:36.66 10.0 undecidable manual SG 123 0.6771 -0.38 0.4
--.GU9.Z. 1992-12-24T23:41:32.83 10.0 undecidable manual SG 309 0.5439 0.02 0.7
--.PII.Z. 1992-12-24T23:41:32.68 10.0 undecidable manual SG 239 0.5439 -0.06 0.7
--.SFI.Z. 1992-12-24T23:41:31.55 10.0 undecidable manual SG 100 0.4995 0.38 0.7
--.BDI.Z. 1992-12-24T23:41:29.60 10.0 undecidable manual SG 278 0.4107 0.36 0.7
--.MME.Z. 1992-12-24T23:41:28.36 10.0 undecidable manual SG 299 0.3885 0.55 0.6
--.CRE.Z. 1992-12-24T23:41:28.22 10.0 undecidable manual PG 123 0.6771 1.2 0.3
--.PGD.Z. 1992-12-24T23:41:27.90 10.0 undecidable manual SG 106 0.4107 -0.66 0.2
--.GU9.Z. 1992-12-24T23:41:24.16 10.0 undecidable manual PG 309 0.5439 -0.44 1
--.PII.Z. 1992-12-24T23:41:24.85 10.0 undecidable manual PG 239 0.5439 0.3 1.7
--.SFI.Z. 1992-12-24T23:41:23.42 10.0 undecidable manual PG 100 0.4995 -0.22 1.4
--.PGD.Z. 1992-12-24T23:41:22.12 10.0 undecidable manual PG 106 0.4107 -0.02 1.8
--.ZC9.Z. 1992-12-24T23:41:22.42 10.0 undecidable manual PG 338 0.3774 0.94 0.8
--.BDI.Z. 1992-12-24T23:41:21.91 10.0 undecidable manual PG 278 0.4107 -0.31 1.4
--.MME.Z. 1992-12-24T23:41:21.35 10.0 positive manual PG 299 0.3885 -0.35 2.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download