Earthquake with magnitude of ML 1.0 on date 08-12-2023 and time 23:39:17 (Italy) in region 9 km W Accumoli (RI)

A magnitude ML 1.0 earthquake occured in region: 9 km W Accumoli (RI), on

  • 08-12-2023 22:39:17 (UTC)
  • 08-12-2023 23:39:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7130, 13.1400 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
Accumoli RI 9 667 667
Norcia PG 10 4957 5624
Cascia PG 10 3217 8841
Cittareale RI 11 482 9323
Arquata del Tronto AP 15 1178 10501
Amatrice RI 15 2657 13158
Poggiodomo PG 17 117 13275
Monteleone di Spoleto PG 17 599 13874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Terni (111501 inhabitants)
45 Km SE of Foligno (57155 inhabitants)
45 Km NW of L'Aquila (69753 inhabitants)
47 Km W of Teramo (54892 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km W of Chieti (51815 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 1.0 2023-12-08
22:39:17
42.7127 13.1403 11 2023-12-08
22:45:54
Sala Sismica INGV-Roma 123904941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-08 22:39:17 ± 0.07
Latitude 42.7127 ± 0.0036
Longitude 13.1403 ± 0.0037
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123904941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 272
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 346
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.23113
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.5
Num. used stations 7
Type of magnitude ML
Reference to an origin 123904941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-08 22:45:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2023-12-08T22:39:44.83 3.0 undecidable manual S -4.89 0
IV.CERA.HNZ. 2023-12-08T22:39:43.06 3.0 undecidable manual P 0.02 0
IV.MMO1.EHZ. 2023-12-08T22:39:26.91 0.6 undecidable manual S 36 25.6521 91 -0.09 50
IV.RM33.EHZ. 2023-12-08T22:39:26.19 0.3 undecidable manual S 165 23.3544 91 -0.19 74
IV.SMA1.EHZ. 2023-12-08T22:39:25.13 0.6 undecidable manual S 120 18.3705 92 0.1 50
IV.GAVE.EHZ. 2023-12-08T22:39:25.61 0.6 undecidable manual S 264 20.1687 92 0.08 49
IV.LNSS.HHZ. 2023-12-08T22:39:23.98 0.6 undecidable manual S 214 14.6742 98 -0.08 51
IV.NRCA.HHZ. 2023-12-08T22:39:23.63 0.6 undecidable manual S 351 13.5753 102 -0.14 51
IV.GAVE.EHZ. 2023-12-08T22:39:22.30 0.6 negative manual P 264 20.1687 92 0.09 49
IV.RM33.EHZ. 2023-12-08T22:39:22.55 1.0 undecidable manual P 165 23.3544 91 -0.16 25
IV.MMO1.EHZ. 2023-12-08T22:39:22.98 1.0 positive manual P 36 25.6521 91 -0.08 25
IV.SMA1.EHZ. 2023-12-08T22:39:22.03 0.1 undecidable manual P 120 18.3705 92 0.11 100
IV.NRCA.HHZ. 2023-12-08T22:39:21.21 1.0 undecidable manual P 351 13.5753 102 0.01 25
IV.LNSS.HHZ. 2023-12-08T22:39:21.45 0.1 positive manual P 214 14.6742 98 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.0 0.00009145 0.14 AML other m 2023-12-08T22:39:23.86
IV.NRCA.HHN. ML:0.9 0.00007580000000000001 0.82 AML other m 2023-12-08T22:39:23.86
IV.CERA.HNN. ML:2.8 0.00033699999999999995 0.5 AML other m 2023-12-08T22:40:30.89
IV.CERA.HNE. ML:2.9 0.0004395 0.52 AML other m 2023-12-08T22:40:30.89
IV.NRCA.HNE. ML:1.0 0.00010308264 0.1536 AML other m 2023-12-08T22:39:23.92
IV.LNSS.HHE. ML:0.8 0.00005579708 0.1408 AML other m 2023-12-08T22:39:24.94
IV.LNSS.HHN. ML:0.7 0.00004452465 0.1024 AML other m 2023-12-08T22:39:24.94
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