Earthquake with magnitude of Md 2.5 on date 25-02-1994 and time 23:28:50 (UTC) in region 4 km S Malborghetto Valbruna (UD)

A magnitude Md 2.5 earthquake occured in region: 4 km S Malborghetto Valbruna (UD), on

  • 25-02-1994 23:28:50 (UTC)
  • 26-02-1994 00:28:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.4740, 13.4370 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
Malborghetto Valbruna UD 4 951 951
Dogna UD 10 175 1126
Pontebba UD 11 1433 2559
Tarvisio UD 11 4326 6885
Chiusaforte UD 12 672 7557
Resia UD 15 1033 8590
Resiutta UD 19 309 8899
Moggio Udinese UD 20 1714 10613

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NE of Udine (99169 inhabitants)
83 Km NE of Pordenone (51229 inhabitants)
95 Km N of Trieste (204420 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 2.5
ML-VAX 1.7
1994-02-25
23:28:50
46.474 13.437 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 205849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-02-25 23:28:50 ± 0.776
Latitude 46.4740 ± 0.0344
Longitude 13.4370 ± 0.0480
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 205849

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) 5301.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 238
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.01174
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 205849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:13:50

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 205849
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
--.CTI.Z. 1994-02-25T23:29:34.13 10.0 undecidable manual SN 251 1.2987 0.88 0.5
--.TRI.Z. 1994-02-25T23:29:18.86 10.0 undecidable manual SG 163 0.7881 0.05 0.8
--.CTI.Z. 1994-02-25T23:29:17.10 10.0 undecidable manual PN 251 1.2987 1.98 0.3
--.FVI.Z. 1994-02-25T23:29:06.58 10.0 undecidable manual SG 284 0.4551 -1.63 0.2
--.TRI.Z. 1994-02-25T23:29:06.14 10.0 undecidable manual PG 163 0.7881 -0.64 1.5
--.GE9.Z. 1994-02-25T23:29:01.10 10.0 undecidable manual SG 226 0.2775 -0.38 0.7
--.FVI.Z. 1994-02-25T23:29:00.24 10.0 undecidable manual PG 284 0.4551 -0.42 1.9
--.GE9.Z. 1994-02-25T23:28:56.99 10.0 undecidable manual PG 226 0.2775 0.27 2.1
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