INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.9 on date 11-08-2018 and time 16:17:31 (Italy) in region 5 km SW Cavazzo Carnico (UD)

A magnitude ML 0.9 earthquake occured in region: 5 km SW Cavazzo Carnico (UD), on

  • 11-08-2018 14:17:31 (UTC)
  • 11-08-2018 16:17:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.33, 13 at 11 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
Cavazzo Carnico UD 5 1052 1052
Verzegnis UD 7 863 1915
Trasaghis UD 8 2227 4142
Bordano UD 8 754 4896
Tolmezzo UD 9 10440 15336
Amaro UD 9 823 16159
Osoppo UD 11 2936 19095
Venzone UD 11 2117 21212
Villa Santina UD 11 2233 23445
Vito d'Asio PN 11 769 24214
Lauco UD 12 729 24943
Forgaria nel Friuli UD 12 1786 26729
Preone UD 12 246 26975
Gemona del Friuli UD 12 10964 37939
Enemonzo UD 13 1319 39258
Clauzetto PN 13 380 39638
Zuglio UD 15 595 40233
Raveo UD 15 458 40691
Artegna UD 16 2885 43576
Socchieve UD 16 908 44484
Arta Terme UD 16 2171 46655
Tramonti di Sopra PN 16 321 46976
Montenars UD 16 538 47514
Castelnovo del Friuli PN 16 880 48394
Tramonti di Sotto PN 16 387 48781
Buja UD 17 6563 55344
Pinzano al Tagliamento PN 17 1525 56869
Ragogna UD 17 2909 59778
Majano UD 17 5945 65723
Moggio Udinese UD 18 1714 67437
Magnano in Riviera UD 18 2336 69773
Travesio PN 18 1776 71549
Resiutta UD 18 309 71858
Ampezzo UD 18 1006 72864
San Daniele del Friuli UD 19 8013 80877
Treppo Grande UD 20 1708 82585
Ovaro UD 20 1922 84507

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of Udine (99169 inhabitants)
49 Km NE of Pordenone (51229 inhabitants)
94 Km NE of Treviso (83731 inhabitants)
96 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 2018-08-11
14:17:31
46.33 13 11 2018-08-11
14:28:49
Sala Sismica INGV-Roma 59637761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-11 14:17:31 ± 0.05
Latitude 46.33 ± 0.00
Longitude 13.00 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 59637761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 419
Semi-minor axis of confidence ellipse (meter) 156
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 89
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 190
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) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.09083
Epicentral distance of station farthest from the epicenter (degree) 0.22753
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 59637761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-11 14:28:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.STAL.HHZ. 2018-08-11T14:17:40.19 0.6 undecidable manual S 250 0.2122 50 0.03 49
OX.ZOU2.HHZ. 2018-08-11T14:17:40.56 0.1 undecidable manual S 355 0.2275 50 -0.06 98
OX.CLUD.HHZ. 2018-08-11T14:17:38.26 0.1 undecidable manual S 327 0.1493 123 -0.04 100
IV.STAL.HHZ. 2018-08-11T14:17:36.42 0.3 undecidable manual P 250 0.2122 50 -0.03 74
OX.MPRI.HHZ. 2018-08-11T14:17:36.48 0.1 undecidable manual S 185 0.0908 137 -0.09 100
OX.ZOU2.HHZ. 2018-08-11T14:17:36.75 0.1 undecidable manual P 355 0.2275 50 0.03 98
OX.CLUD.HHZ. 2018-08-11T14:17:35.46 0.1 undecidable manual P 327 0.1493 123 0.08 99
OX.MPRI.HHZ. 2018-08-11T14:17:34.46 0.1 undecidable manual P 185 0.0908 137 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.MPRI.HHN. ML:1.1 0.00014245775 0.4416 AML other m 2018-08-11T14:17:37.71
OX.MPRI.HNN. ML:0.9 0.000105280645 0.3584 AML other m 2018-08-11T14:17:37.71
OX.MPRI.HNE. ML:0.9 0.00010512385 0.3392 AML other m 2018-08-11T14:17:37.13
OX.MPRI.HHE. ML:1 0.0001264703 0.3584 AML other m 2018-08-11T14:17:37.13
OX.CLUD.HNN. ML:0.5 2.4116865E-5 0.544 AML other m 2018-08-11T14:17:37.70
OX.CLUD.HNE. ML:0.8 5.3680875E-5 0.864 AML other m 2018-08-11T14:17:41.43
OX.CLUD.HHE. ML:0.4 2.0368305E-5 0.1024 AML other m 2018-08-11T14:17:38.52
OX.CLUD.HHN. ML:0.1 8.80486E-6 0.0768 AML other m 2018-08-11T14:17:38.57
IV.STAL.HHN. ML:0.5 1.764544E-5 0.1024 AML other m 2018-08-11T14:17:40.90
IV.STAL.HNN. ML:1.2 9.7778295E-5 0.8896 AML other m 2018-08-11T14:17:48.70
IV.STAL.HNE. ML:1.4 0.0001465475 1.088 AML other m 2018-08-11T14:17:38.70
IV.STAL.HHE. ML:0.4 1.68525E-5 0.2816 AML other m 2018-08-11T14:17:42.88
OX.ZOU2.HNN. ML:0.9 4.4544065E-5 0.5824 AML other m 2018-08-11T14:17:41.94
OX.ZOU2.HHN. ML:0.5 1.762805E-5 0.256 AML other m 2018-08-11T14:17:41.18
OX.ZOU2.HNE. ML:1 5.6284945E-5 0.6592 AML other m 2018-08-11T14:17:39.13
OX.ZOU2.HHE. ML:0.6 2.727176E-5 0.256 AML other m 2018-08-11T14:17:41.08
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