Earthquake with magnitude of Md 2.3 on date 08-02-1992 and time 02:19:52 (Italy) in region 2 km SE Castel Viscardo (TR)

A magnitude Md 2.3 earthquake occured in region: 2 km SE Castel Viscardo (TR), on

  • 08-02-1992 01:19:52 (UTC)
  • 08-02-1992 02:19:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7460, 12.0190 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
Castel Viscardo TR 2 2938 2938
Castel Giorgio TR 5 2131 5069
Orvieto TR 8 20630 25699
Allerona TR 8 1794 27493
Porano TR 9 1966 29459
Ficulle TR 11 1669 31128
San Lorenzo Nuovo VT 11 2091 33219
Bolsena VT 11 3991 37210
Acquapendente VT 13 5506 42716
Fabro TR 13 2876 45592
Lubriano VT 14 909 46501
Grotte di Castro VT 14 2683 49184
Bagnoregio VT 15 3650 52834
Parrano TR 15 534 53368
Proceno VT 15 557 53925
Gradoli VT 17 1353 55278
Onano VT 18 995 56273
San Casciano dei Bagni SI 18 1632 57905
Baschi TR 18 2722 60627
Castiglione in Teverina VT 19 2329 62956
Monteleone d'Orvieto TR 19 1467 64423

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km N of Viterbo (67173 inhabitants)
50 Km SW of Perugia (166134 inhabitants)
55 Km W of Terni (111501 inhabitants)
61 Km W of Foligno (57155 inhabitants)
74 Km E of Grosseto (82087 inhabitants)
75 Km N of Civitavecchia (52991 inhabitants)
81 Km S of Arezzo (99543 inhabitants)
85 Km SE of Siena (53903 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 2.3
ML-VAX 1.5
1992-02-08
01:19:52
42.746 12.019 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 158279
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1992-02-08 01:19:52 ± 1.044
Latitude 42.7460 ± 0.0598
Longitude 12.0190 ± 0.0511
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 158279

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) 7852.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 293
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00502
Epicentral distance of station farthest from the epicenter (degree) 0.01044
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 158279
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:27:55

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 158279
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
--.SFI.Z. 1992-02-08T01:20:30.76 10.0 undecidable manual SN 354 1.1544 -1.46 0
--.CRE.Z. 1992-02-08T01:20:24.18 10.0 undecidable manual SG 357 0.8769 0.54 0.4
--.SFI.Z. 1992-02-08T01:20:15.79 10.0 undecidable manual PN 354 1.1544 0.28 1.3
--.PGD.Z. 1992-02-08T01:20:15.50 10.0 undecidable manual PN 349 1.1433 0.19 1.3
--.ASS.Z. 1992-02-08T01:20:14.45 10.0 undecidable manual SG 55 0.555 0.87 0.2
--.ARV.Z. 1992-02-08T01:20:11.95 10.0 undecidable manual PG 41 1.0101 -1.13 0.3
--.CRE.Z. 1992-02-08T01:20:10.75 10.0 negative manual PG 357 0.8769 0.19 3
--.ASS.Z. 1992-02-08T01:20:05.10 10.0 undecidable manual PG 55 0.555 0.26 1.4
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