Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.0 on date 10-02-1985 and time 04:34:08 (UTC) in region 3 km SW Verzegnis (UD)

A magnitude Md 2.0 earthquake occured in region: 3 km SW Verzegnis (UD), on

  • 10-02-1985 04:34:08 (UTC)
  • 10-02-1985 05:34:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.3730, 12.9630 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
Verzegnis UD 3 863 863
Tolmezzo UD 6 10440 11303
Villa Santina UD 6 2233 13536
Cavazzo Carnico UD 6 1052 14588
Lauco UD 6 729 15317
Enemonzo UD 8 1319 16636
Preone UD 8 246 16882
Raveo UD 10 458 17340
Amaro UD 10 823 18163
Zuglio UD 11 595 18758
Socchieve UD 11 908 19666
Arta Terme UD 12 2171 21837
Bordano UD 13 754 22591
Trasaghis UD 13 2227 24818
Ampezzo UD 14 1006 25824
Venzone UD 14 2117 27941
Ovaro UD 15 1922 29863
Tramonti di Sopra PN 15 321 30184
Vito d'Asio PN 15 769 30953
Sutrio UD 16 1332 32285
Tramonti di Sotto PN 16 387 32672
Osoppo UD 16 2936 35608
Clauzetto PN 16 380 35988
Forgaria nel Friuli UD 17 1786 37774
Comeglians UD 17 516 38290
Ravascletto UD 17 536 38826
Cercivento UD 17 679 39505
Gemona del Friuli UD 17 10964 50469
Paluzza UD 18 2217 52686
Moggio Udinese UD 18 1714 54400
Treppo Carnico UD 19 618 55018
Castelnovo del Friuli PN 20 880 55898
Resiutta UD 20 309 56207

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NW of Udine (99169 inhabitants)
52 Km NE of Pordenone (51229 inhabitants)
96 Km NE of Treviso (83731 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		Md 2.0
M 2.1 		1985-02-10
04:34:08		 46.373 12.963 10 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 1449
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-10 04:34:08 ± 0.107
Latitude 46.3730 ± 0.0062
Longitude 12.9630 ± 0.0133
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1449

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) 1229.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.00453
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 1449
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:33

M:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1449
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:39:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.DRE.Z. 1985-02-10T04:34:26.20 10.0 undecidable manual SG 112 0.0045 -0.23 0.3
--.UDI.Z. 1985-02-10T04:34:22.30 10.0 undecidable manual SG 148 0.0032 0.67 0
--.COL.Z. 1985-02-10T04:34:22.20 10.0 undecidable manual SG 129 0.0033 0.17 0.4
--.FO1.Z. 1985-02-10T04:34:18.00 10.0 undecidable manual SG 330 0.0023 -0.21 0.4
--.DRE.Z. 1985-02-10T04:34:18.10 10.0 undecidable manual PG 112 0.0045 -0.58 0.1
--.BAD.Z. 1985-02-10T04:34:17.40 10.0 undecidable manual SG 125 0.0021 -0.23 0.6
--.UDI.Z. 1985-02-10T04:34:16.10 10.0 undecidable manual PG 148 0.0032 0.19 0.9
--.COL.Z. 1985-02-10T04:34:16.30 10.0 undecidable manual PG 129 0.0033 0.16 1
--.BUA.Z. 1985-02-10T04:34:16.30 10.0 undecidable manual SG 144 0.0017 0.16 0.7
--.ZOU.Z. 1985-02-10T04:34:16.50 10.0 undecidable manual SG 2 0.0016 0.54 0.1
--.MPR.Z. 1985-02-10T04:34:14.30 10.0 undecidable manual SG 172 0.0011 0.09 0.8
--.BOO.Z. 1985-02-10T04:34:13.40 10.0 undecidable manual SG 119 0.0010 -0.07 0.8
--.BAD.Z. 1985-02-10T04:34:13.50 10.0 negative manual PG 125 0.0021 -0.1 2.6
--.FO1.Z. 1985-02-10T04:34:13.50 10.0 undecidable manual PG 330 0.0023 -0.44 0.3
--.BUA.Z. 1985-02-10T04:34:12.70 10.0 undecidable manual PG 144 0.0017 -0.04 1.4
--.ZOU.Z. 1985-02-10T04:34:12.80 10.0 negative manual PG 2 0.0016 0.16 2.3
--.BOO.Z. 1985-02-10T04:34:11.30 10.0 positive manual PG 119 0.0010 0.1 2.6
--.MPR.Z. 1985-02-10T04:34:11.60 10.0 positive manual PG 172 0.0011 -0.03 2.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download