INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.9 on date 04-12-2018 and time 10:52:25 (Italy) in region 2 km NE Venzone (UD)

A magnitude ML 0.9 earthquake occured in region: 2 km NE Venzone (UD), on

  • 04-12-2018 09:52:25 (UTC)
  • 04-12-2018 10:52:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.35, 13.16 at 8 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Venzone UD 2 2117 2117
Bordano UD 6 754 2871
Amaro UD 6 823 3694
Resiutta UD 7 309 4003
Moggio Udinese UD 7 1714 5717
Gemona del Friuli UD 8 10964 16681
Cavazzo Carnico UD 10 1052 17733
Trasaghis UD 10 2227 19960
Montenars UD 10 538 20498
Resia UD 11 1033 21531
Artegna UD 12 2885 24416
Lusevera UD 12 643 25059
Osoppo UD 12 2936 27995
Magnano in Riviera UD 13 2336 30331
Chiusaforte UD 13 672 31003
Tolmezzo UD 13 10440 41443
Verzegnis UD 14 863 42306
Tarcento UD 15 9012 51318
Buja UD 16 6563 57881
Dogna UD 16 175 58056
Zuglio UD 17 595 58651
Treppo Grande UD 17 1708 60359
Taipana UD 17 636 60995
Arta Terme UD 18 2171 63166
Nimis UD 18 2740 65906
Majano UD 19 5945 71851
Cassacco UD 19 2938 74789
Lauco UD 20 729 75518

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km N of Udine (99169 inhabitants)
58 Km NE of Pordenone (51229 inhabitants)
91 Km NW of Trieste (204420 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 0.9 2018-12-04
09:52:25
46.35 13.17 9 2018-12-04
12:50:40
Sala Sismica INGV-Roma 63634081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-04 09:52:25 ± 0.24
Latitude 46.35 ± 0.00
Longitude 13.17 ± 0.00
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 63634081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 369
Semi-minor axis of confidence ellipse (meter) 249
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 22
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
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) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.12051
Epicentral distance of station farthest from the epicenter (degree) 0.24911
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 63634081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-04 12:50:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OX.ZOU2.HHZ. 2018-12-04T09:52:35.74 0.3 undecidable manual S 328 0.2491 107 0.18 74
OX.CLUD.HHZ. 2018-12-04T09:52:34.30 0.6 undecidable manual S 299 0.2239 109 -0.35 48
NI.PALA.HHZ. 2018-12-04T09:52:33.75 0.6 undecidable manual S 238 0.1952 111 0.13 50
OX.MPRI.HHZ. 2018-12-04T09:52:32.64 0.6 undecidable manual S 229 0.1628 115 0.19 50
OX.ZOU2.HHZ. 2018-12-04T09:52:31.36 1.0 negative manual P 328 0.2491 107 0.04 25
NI.VINO.HHZ. 2018-12-04T09:52:31.04 0.3 undecidable manual S 141 0.1205 122 0.01 78
IV.PTCC.HHZ. 2018-12-04T09:52:31.57 0.6 undecidable manual S 65 0.143 118 -0.22 50
OX.CLUD.HHZ. 2018-12-04T09:52:30.71 0.6 undecidable manual P 299 0.2239 109 -0.08 50
IV.PTCC.HHZ. 2018-12-04T09:52:29.34 0.1 undecidable manual P 65 0.143 118 0.2 100
OX.MPRI.HHZ. 2018-12-04T09:52:29.42 0.6 negative manual P 229 0.1628 115 -0.1 51
NI.PALA.HHZ. 2018-12-04T09:52:29.94 1.0 negative manual P 238 0.1952 111 -0.26 24
NI.VINO.HHZ. 2018-12-04T09:52:28.60 0.3 positive manual P 141 0.1205 122 -0.1 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTCC.HHN. ML:0.9 7.7E-5 0.2 AML other m 2018-12-04T09:52:31.70
IV.PTCC.HHE. ML:0.8 6.635E-5 0.2 AML other m 2018-12-04T09:52:31.80
NI.VINO.HHE. ML:0.7 5.585E-5 0.14 AML other m 2018-12-04T09:52:31.85
NI.VINO.HHN. ML:0.7 5.465E-5 0.18 AML other m 2018-12-04T09:52:31.90
OX.MPRI.HHN. ML:1.1 9.78E-5 0.3 AML other m 2018-12-04T09:52:33.03
OX.MPRI.HHE. ML:1 9.335E-5 0.3 AML other m 2018-12-04T09:52:33.45
NI.PALA.HHN. ML:1.1 7.94E-5 1.1 AML other m 2018-12-04T09:52:34.10
NI.PALA.HHE. ML:1.1 8.295E-5 0.78 AML other m 2018-12-04T09:52:34.65
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download