Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 06-01-2023 and time 11:11:26 (Italy) in region 6 km W Accumoli (RI)

A magnitude ML 1.2 earthquake occured in region: 6 km W Accumoli (RI), on

  • 06-01-2023 10:11:26 (UTC)
  • 06-01-2023 11:11:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6850, 13.1790 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 6 667 667
Cittareale RI 8 482 1149
Amatrice RI 11 2657 3806
Arquata del Tronto AP 14 1178 4984
Norcia PG 14 4957 9941
Cascia PG 14 3217 13158
Montereale AQ 19 2581 15739
Monteleone di Spoleto PG 19 599 16338
Posta RI 19 694 17032
Borbona RI 20 617 17649

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
80 Km SE of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
88 Km W of Pescara (121014 inhabitants)
89 Km W of Chieti (51815 inhabitants)
93 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
Bulletin
Rev1000 		ML 1.2 2023-01-06
10:11:26		 42.6852 13.1793 11 2024-03-01
17:18:05		 Bollettino Sismico Italiano INGV 116837561
Reviewed
Rev100 		ML 1.1 2023-01-06
10:11:26		 42.6892 13.1802 10 2023-01-06
10:19:15		 Sala Sismica INGV-Roma 113344581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-06 10:11:26 ± 0.04
Latitude 42.6852 ± 0.0027
Longitude 13.1793 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116837561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 330
Semi-minor axis of confidence ellipse (meter) 252
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 86
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
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) 0.12680
Epicentral distance of station farthest from the epicenter (degree) 0.41908
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 113344581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-06 10:19:15

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 116837561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-28 13:49:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHZ. 2023-01-06T10:11:40.16 0.6 undecidable manual S 328 41.9247 50 0.4 45
IV.FDMO.HHZ. 2023-01-06T10:11:39.27 0.6 undecidable manual S 349 39.7269 50 0.1 48
IV.TERO.HHZ. 2023-01-06T10:11:37.75 0.6 undecidable manual S 101 35.3424 50 -0.25 47
IV.MC2.EHZ. 2023-01-06T10:11:35.42 0.6 undecidable manual S 2 25.1526 50 0.14 49
7F.SIB1.EHE. 2023-01-06T10:11:35.06 0.6 undecidable manual S 18 24.3534 50 -0.03 50
IV.FIAM.HHZ. 2023-01-06T10:11:34.55 0.1 undecidable manual P 186 46.5201 50 -0.12 94
IV.MF5.EHZ. 2023-01-06T10:11:34.23 0.6 undecidable manual P 34 40.626 50 0.48 44
IV.GAVE.EHZ. 2023-01-06T10:11:34.53 0.6 undecidable manual S 272 23.2545 50 -0.25 48
IV.RM33.EHZ. 2023-01-06T10:11:33.70 0.6 undecidable manual S 172 19.7691 118 -0.12 49
IV.CESI.HHZ. 2023-01-06T10:11:33.92 1.0 undecidable manual P 328 41.9247 50 -0.04 24
IV.FDMO.HHZ. 2023-01-06T10:11:33.42 0.1 undecidable manual P 349 39.7269 50 -0.19 94
IV.LNSS.HHZ. 2023-01-06T10:11:32.36 0.6 undecidable manual S 231 14.5743 126 0.06 50
IV.NRCA.HHZ. 2023-01-06T10:11:32.67 0.6 undecidable manual S 342 17.2716 122 -0.41 46
IV.TERO.HHZ. 2023-01-06T10:11:32.78 1.0 undecidable manual P 101 35.3424 50 -0.16 24
IV.SMA1.EHZ. 2023-01-06T10:11:32.30 0.6 undecidable manual S 115 14.0748 127 0.14 50
IV.GAVE.EHZ. 2023-01-06T10:11:31.07 0.6 negative manual P 272 23.2545 50 -0.01 50
IV.MC2.EHZ. 2023-01-06T10:11:31.40 0.6 positive manual P 2 25.1526 50 0.03 50
7F.SIB1.EHE. 2023-01-06T10:11:31.25 0.1 undecidable manual P 18 24.3534 50 -0.01 100
7F.SIB3.EHN. 2023-01-06T10:11:30.97 0.1 undecidable manual P 19 22.3554 50 0.03 100
IV.NRCA.HHZ. 2023-01-06T10:11:30.04 0.1 positive manual P 342 17.2716 122 -0.06 100
IV.MTRA.EHE. 2023-01-06T10:11:30.37 0.1 undecidable manual P 66 19.3695 119 -0.09 99
IV.RM33.EHZ. 2023-01-06T10:11:30.53 0.6 undecidable manual P 172 19.7691 118 0.01 50
IV.SMA1.EHZ. 2023-01-06T10:11:29.81 0.6 positive manual P 115 14.0748 127 0.24 48
IV.LNSS.HHZ. 2023-01-06T10:11:29.86 0.1 undecidable manual P 231 14.5743 126 0.21 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.7 0.00047 0.3 AML other m 2023-01-06T10:11:32.51
IV.SMA1.EHN. ML:1.2 0.00014450000000000002 0.32 AML other m 2023-01-06T10:11:32.73
IV.LNSS.HHN. ML:1.7 0.0004595 0.2 AML other m 2023-01-06T10:11:32.70
IV.SMA1.EHE. ML:1.0 0.00009279999999999999 0.84 AML other m 2023-01-06T10:11:32.49
IV.NRCA.HHE. ML:1.5 0.000284 1.3 AML other m 2023-01-06T10:11:33.29
IV.RM33.EHE. ML:0.8 0.00004675 0.14 AML other m 2023-01-06T10:11:33.98
IV.NRCA.HHN. ML:1.1 0.000117 0.12 AML other m 2023-01-06T10:11:34.29
IV.RM33.EHN. ML:1.0 0.00007175000000000001 1.16 AML other m 2023-01-06T10:11:34.93
IV.GAVE.EHN. ML:1.3 0.00013455 1.7 AML other m 2023-01-06T10:11:35.02
IV.GAVE.EHE. ML:1.3 0.00011800000000000001 0.42 AML other m 2023-01-06T10:11:35.23
IV.TERO.HHN. ML:0.8 0.0000266 1.1 AML other m 2023-01-06T10:11:38.43
IV.TERO.HHE. ML:0.9 0.000027550000000000002 0.68 AML other m 2023-01-06T10:11:39.59
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