Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 29-12-2023 and time 15:52:06 (Italy) in region 8 km NW Accumoli (RI)

A magnitude ML 1.4 earthquake occured in region: 8 km NW Accumoli (RI), on

  • 29-12-2023 14:52:06 (UTC)
  • 29-12-2023 15:52:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7300, 13.1690 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.

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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
Accumoli RI 8 667 667
Norcia PG 9 4957 5624
Arquata del Tronto AP 12 1178 6802
Cittareale RI 12 482 7284
Cascia PG 13 3217 10501
Amatrice RI 15 2657 13158
Castelsantangelo sul Nera MC 18 281 13439
Montegallo AP 18 523 13962
Poggiodomo PG 19 117 14079
Preci PG 20 724 14803
Monteleone di Spoleto PG 20 599 15402

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km W of Teramo (54892 inhabitants)
46 Km SE of Foligno (57155 inhabitants)
46 Km NW of L'Aquila (69753 inhabitants)
47 Km E of Terni (111501 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
91 Km W of Pescara (121014 inhabitants)
92 Km W of Chieti (51815 inhabitants)
94 Km E of Viterbo (67173 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 1.4 2023-12-29
14:52:06		 42.7302 13.1692 11 2023-12-29
15:00:22		 Sala Sismica INGV-Roma 124342201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-29 14:52:06 ± 0.04
Latitude 42.7302 ± 0.0018
Longitude 13.1692 ± 0.0037
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 124342201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 338
Semi-minor axis of confidence ellipse (meter) 153
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 282
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36243
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 124342201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-29 15:00:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2023-12-29T14:52:26.49 3.0 undecidable manual P -0.03 0
IV.FIAM.HHZ. 2023-12-29T14:52:23.49 3.0 undecidable manual S -0.1 0
IV.CSP1.EHZ. 2023-12-29T14:52:20.32 0.6 undecidable manual S 4 40.2264 50 0.16 47
IV.MF5.EHZ. 2023-12-29T14:52:19.98 0.6 undecidable manual S 39 37.0296 50 0.66 41
IV.FDMO.HHZ. 2023-12-29T14:52:18.38 0.6 undecidable manual S 349 34.6431 50 -0.28 46
IV.RM33.EHZ. 2023-12-29T14:52:16.00 0.3 undecidable manual S 171 24.8529 50 -0.04 74
IV.MMO1.EHZ. 2023-12-29T14:52:15.44 0.3 undecidable manual S 34 22.755 50 -0.05 74
IV.GAVE.EHE. 2023-12-29T14:52:15.38 0.3 undecidable manual S 259 22.755 50 -0.13 73
IV.MC2.EHN. 2023-12-29T14:52:15.07 0.3 undecidable manual S 5 20.1687 50 0.26 71
7F.SIB2.EHN. 2023-12-29T14:52:14.77 0.6 undecidable manual S 31 20.9679 50 -0.24 48
IV.LNSS.HHZ. 2023-12-29T14:52:14.19 0.3 undecidable manual S 217 17.5713 122 0.11 74
IV.SMA1.EHZ. 2023-12-29T14:52:14.05 0.6 undecidable manual S 129 17.4714 122 0 50
IV.CSP1.EHZ. 2023-12-29T14:52:14.50 0.3 undecidable manual P 4 40.2264 50 -0.06 72
7F.SIB1.EHZ. 2023-12-29T14:52:14.80 0.6 undecidable manual S 24 20.0688 50 0.04 50
IV.MF5.EHZ. 2023-12-29T14:52:14.52 0.6 undecidable manual P 39 37.0296 50 0.44 44
7F.SIB3.EHN. 2023-12-29T14:52:13.99 0.6 undecidable manual S 27 18.0708 121 -0.23 48
IV.FDMO.HHZ. 2023-12-29T14:52:13.64 0.1 undecidable manual P 349 34.6431 50 -0.06 97
IV.TERO.HHZ. 2023-12-29T14:52:13.73 0.3 undecidable manual P 108 37.4292 50 -0.39 67
IV.NRCA.HHZ. 2023-12-29T14:52:12.51 0.1 undecidable manual S 339 12.2766 131 -0.09 100
IV.RM33.EHZ. 2023-12-29T14:52:12.20 0.1 undecidable manual P 171 24.8529 50 0.02 99
7F.SIB1.EHZ. 2023-12-29T14:52:11.48 0.1 undecidable manual P 24 20.0688 50 0.04 100
IV.MMO1.EHZ. 2023-12-29T14:52:11.84 0.1 positive manual P 34 22.755 50 -0.02 100
IV.GAVE.EHE. 2023-12-29T14:52:11.90 0.3 undecidable manual P 259 22.755 50 0.03 75
IV.MC2.EHN. 2023-12-29T14:52:11.49 0.3 undecidable manual P 5 20.1687 50 0.02 75
7F.SIB2.EHN. 2023-12-29T14:52:11.47 0.1 undecidable manual P 31 20.9679 50 -0.12 98
IV.LNSS.HHZ. 2023-12-29T14:52:11.14 0.1 undecidable manual P 217 17.5713 122 0.09 99
7F.SIB3.EHN. 2023-12-29T14:52:11.07 0.1 undecidable manual P 27 18.0708 121 -0.06 100
IV.SMA1.EHZ. 2023-12-29T14:52:11.10 0.1 undecidable manual P 129 17.4714 122 0.07 100
IV.NRCA.HHZ. 2023-12-29T14:52:10.33 0.1 undecidable manual P 339 12.2766 131 0.13 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.6 0.0004295 0.08 AML other m 2023-12-29T14:52:12.59
IV.NRCA.HNE. ML:1.6 0.00042449999999999996 0.06 AML other m 2023-12-29T14:52:12.58
IV.NRCA.HHN. ML:1.6 0.000424 0.08 AML other m 2023-12-29T14:52:12.55
IV.NRCA.HNN. ML:1.6 0.00038190155 0.0896 AML other m 2023-12-29T14:52:12.54
IV.SMA1.EHN. ML:0.9 0.00006205 0.28 AML other m 2023-12-29T14:52:14.76
IV.LNSS.HHE. ML:1.5 0.000254 0.72 AML other m 2023-12-29T14:52:14.42
IV.LNSS.HHN. ML:1.5 0.0002455 0.7 AML other m 2023-12-29T14:52:14.84
IV.MMO1.EHN. ML:1.3 0.00013874999999999998 0.16 AML other m 2023-12-29T14:52:15.50
IV.MMO1.EHE. ML:1.2 0.00009104999999999999 0.54 AML other m 2023-12-29T14:52:15.47
IV.SMA1.EHE. ML:1.0 0.00008115 0.42 AML other m 2023-12-29T14:52:15.92
IV.RM33.EHN. ML:1.0 0.00006185 0.26 AML other m 2023-12-29T14:52:16.22
IV.RM33.EHE. ML:1.0 0.00005306448 0.1984 AML other m 2023-12-29T14:52:16.90
IV.LNSS.HNE. ML:1.4 0.0002066073 0.2816 AML other m 2023-12-29T14:52:14.42
IV.LNSS.HNN. ML:1.5 0.000235503605 0.1792 AML other m 2023-12-29T14:52:14.49
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