Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 16-12-2023 and time 17:34:00 (UTC) in region 4 km S Ravascletto (UD)

A magnitude ML 1.3 earthquake occured in region: 4 km S Ravascletto (UD), on

  • 16-12-2023 17:34:00 (UTC)
  • 16-12-2023 18:34:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.4890, 12.9280 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.

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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
Ravascletto UD 4 536 536
Ovaro UD 5 1922 2458
Comeglians UD 5 516 2974
Sutrio UD 6 1332 4306
Cercivento UD 6 679 4985
Lauco UD 7 729 5714
Raveo UD 7 458 6172
Arta Terme UD 8 2171 8343
Villa Santina UD 8 2233 10576
Zuglio UD 8 595 11171
Paluzza UD 8 2217 13388
Rigolato UD 9 448 13836
Enemonzo UD 9 1319 15155
Treppo Carnico UD 10 618 15773
Prato Carnico UD 11 904 16677
Preone UD 11 246 16923
Tolmezzo UD 11 10440 27363
Verzegnis UD 12 863 28226
Socchieve UD 12 908 29134
Ligosullo UD 13 116 29250
Ampezzo UD 13 1006 30256
Paularo UD 15 2623 32879
Forni Avoltri UD 16 588 33467
Cavazzo Carnico UD 16 1052 34519
Sauris UD 17 416 34935
Amaro UD 18 823 35758

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km NW of Udine (99169 inhabitants)
63 Km NE of Pordenone (51229 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
Reviewed
Rev100 		ML 1.3 2023-12-16
17:34:00		 46.4892 12.9275 8 2023-12-16
17:39:46		 Sala Sismica INGV-Roma 124091231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-16 17:34:00 ± 0.08
Latitude 46.4892 ± 0.0036
Longitude 12.9275 ± 0.0052
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124091231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 375
Semi-minor axis of confidence ellipse (meter) 170
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.37682
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 124091231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-16 17:39:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.CIMO.HHZ. 2023-12-16T17:34:14.38 0.6 undecidable manual S 242 41.8248 50 -0.11 47
IV.STAL.HHZ. 2023-12-16T17:34:11.03 0.3 undecidable manual S 213 30.3474 104 0.04 73
OX.MPRI.HHZ. 2023-12-16T17:34:10.36 0.6 undecidable manual S 170 27.9498 105 0.19 47
NI.PALA.HHZ. 2023-12-16T17:34:10.29 0.6 undecidable manual S 181 27.0507 106 0.4 45
OX.CIMO.HHZ. 2023-12-16T17:34:08.60 0.1 undecidable manual P 242 41.8248 50 0.19 92
OX.PLRO.HHZ. 2023-12-16T17:34:07.22 0.6 undecidable manual S 68 18.0708 113 0.27 47
IV.PTCC.HHZ. 2023-12-16T17:34:06.63 0.1 undecidable manual P 105 33.8439 103 -0.44 89
IV.FVI.HHZ. 2023-12-16T17:34:06.22 0.3 undecidable manual S 317 16.3725 115 -0.18 72
IV.STAL.HHZ. 2023-12-16T17:34:06.26 0.1 undecidable manual P 213 30.3474 104 -0.13 95
NI.PALA.HHZ. 2023-12-16T17:34:05.67 0.1 undecidable manual P 181 27.0507 106 -0.09 97
OX.MPRI.HHZ. 2023-12-16T17:34:05.68 0.1 undecidable manual P 170 27.9498 105 -0.24 93
OX.PLRO.HHZ. 2023-12-16T17:34:04.11 0.1 undecidable manual P 68 18.0708 113 0.05 99
OX.FUSE.HHZ. 2023-12-16T17:34:04.65 0.3 undecidable manual S 146 10.0788 128 0.14 74
IV.FVI.HHZ. 2023-12-16T17:34:04.00 0.1 undecidable manual P 317 16.3725 115 0.26 95
OX.CLUD.HHZ. 2023-12-16T17:34:03.08 0.3 undecidable manual S 225 4.995 147 -0.23 73
OX.CLUD.HHZ. 2023-12-16T17:34:02.08 0.1 undecidable manual P 225 4.995 147 0.12 100
OX.FUSE.HHZ. 2023-12-16T17:34:02.72 0.1 undecidable manual P 146 10.0788 128 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.FUSE.HHE. ML:1.2 0.000223 1.28 AML other m 2023-12-16T17:34:06.89
IV.FVI.HHE. ML:1.3 0.0001905 0.2 AML other m 2023-12-16T17:34:06.55
OX.FUSE.HHN. ML:1.3 0.0003055 1.08 AML other m 2023-12-16T17:34:07.97
OX.PLRO.HHN. ML:1.4 0.00023999999999999998 0.22 AML other m 2023-12-16T17:34:08.65
IV.FVI.HHN. ML:0.9 0.00008225000000000001 0.98 AML other m 2023-12-16T17:34:09.09
OX.PLRO.HHE. ML:1.2 0.00013000000000000002 0.24 AML other m 2023-12-16T17:34:09.34
IV.STAL.HHN. ML:1.5 0.00014600000000000003 0.24 AML other m 2023-12-16T17:34:11.61
IV.STAL.HHE. ML:1.5 0.0001385 0.34 AML other m 2023-12-16T17:34:12.03
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