Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 02-10-2023 and time 07:29:06 (UTC) in region 2 km E Accumoli (RI)

A magnitude ML 1.2 earthquake occured in region: 2 km E Accumoli (RI), on

  • 02-10-2023 07:29:06 (UTC)
  • 02-10-2023 09:29:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6900, 13.2730 at 12 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 2 667 667
Amatrice RI 7 2657 3324
Arquata del Tronto AP 10 1178 4502
Cittareale RI 12 482 4984
Acquasanta Terme AP 14 2916 7900
Campotosto AQ 17 542 8442
Montegallo AP 18 523 8965
Montereale AQ 19 2581 11546
Norcia PG 19 4957 16503
Capitignano AQ 19 665 17168
Valle Castellana TE 19 977 18145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Teramo (54892 inhabitants)
39 Km N of L'Aquila (69753 inhabitants)
53 Km E of Terni (111501 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
81 Km W of Pescara (121014 inhabitants)
83 Km W of Chieti (51815 inhabitants)
86 Km SE of Perugia (166134 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 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 1.2 2023-10-02
07:29:06		 42.6903 13.2728 12 2023-10-02
07:37:30		 Sala Sismica INGV-Roma 121667361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-02 07:29:06 ± 0.04
Latitude 42.6903 ± 0.0018
Longitude 13.2728 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121667361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 285
Semi-minor axis of confidence ellipse (meter) 189
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.07554
Epicentral distance of station farthest from the epicenter (degree) 0.40469
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 121667361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-02 07:37:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2023-10-02T07:29:19.85 1.0 undecidable manual S 339 41.2254 92 0.19 23
IV.GIGS.HHZ. 2023-10-02T07:29:17.93 1.0 undecidable manual S 137 35.9418 92 -0.31 23
IV.GAVE.EHZ. 2023-10-02T07:29:16.71 0.3 undecidable manual S 271 30.8469 93 -0.18 71
IV.MC2.EHZ. 2023-10-02T07:29:15.69 1.0 undecidable manual S 344 25.4523 94 0.25 23
IV.MMO1.EHZ. 2023-10-02T07:29:15.01 0.3 undecidable manual S 11 23.5542 94 0.06 73
IV.RM33.EHZ. 2023-10-02T07:29:14.09 0.6 undecidable manual S 193 20.6682 96 -0.08 49
7F.SIB2.EHZ. 2023-10-02T07:29:14.35 0.3 undecidable manual S 6 22.3554 95 -0.28 70
IV.LNSS.HHZ. 2023-10-02T07:29:14.28 1.0 undecidable manual S 243 21.3675 96 -0.06 25
IV.FDMO.HHZ. 2023-10-02T07:29:14.30 0.6 undecidable manual P 339 41.2254 92 0.34 45
IV.CSP1.EHZ. 2023-10-02T07:29:14.94 1.0 undecidable manual P 353 44.9217 91 0.42 22
7F.SIB1.EHZ. 2023-10-02T07:29:14.67 0.6 undecidable manual S 359 22.6551 95 -0.03 49
IV.NRCA.HHZ. 2023-10-02T07:29:13.77 0.6 undecidable manual S 321 20.4684 96 -0.35 46
IV.GIGS.HHZ. 2023-10-02T07:29:13.23 0.6 undecidable manual P 137 35.9418 92 0.08 48
IV.CAMP.HHZ. 2023-10-02T07:29:13.96 1.0 undecidable manual S 147 20.4684 96 -0.15 24
IV.GAVE.EHZ. 2023-10-02T07:29:12.20 0.1 undecidable manual P 271 30.8469 93 -0.17 95
IV.MC2.EHZ. 2023-10-02T07:29:12.04 1.0 undecidable manual P 344 25.4523 94 0.51 22
IV.SMA1.EHZ. 2023-10-02T07:29:11.09 0.3 undecidable manual S 142 8.3805 133 -0.06 75
7F.SIB1.EHZ. 2023-10-02T07:29:11.19 0.1 undecidable manual P 359 22.6551 95 0.09 97
IV.MTRA.HNZ. 2023-10-02T07:29:11.83 0.3 undecidable manual S 54 12.4764 115 -0.22 72
IV.MMO1.EHZ. 2023-10-02T07:29:11.23 1.0 undecidable manual P 11 23.5542 94 -0.01 25
IV.CAMP.HHZ. 2023-10-02T07:29:10.83 0.1 undecidable manual P 147 20.4684 96 0.07 98
IV.NRCA.HHZ. 2023-10-02T07:29:10.95 0.6 undecidable manual P 321 20.4684 96 0.18 48
IV.RM33.EHZ. 2023-10-02T07:29:10.87 0.3 positive manual P 193 20.6682 96 0.07 73
7F.SIB2.EHZ. 2023-10-02T07:29:10.98 0.3 undecidable manual P 6 22.3554 95 -0.08 73
IV.LNSS.HHZ. 2023-10-02T07:29:10.90 0.1 positive manual P 243 21.3675 96 0 98
IV.MTRA.HNZ. 2023-10-02T07:29:09.61 0.1 undecidable manual P 54 12.4764 115 0.04 100
IV.SMA1.EHZ. 2023-10-02T07:29:09.23 0.1 undecidable manual P 142 8.3805 133 0.18 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.4 0.0002935 0.18 AML other m 2023-10-02T07:29:11.18
IV.SMA1.EHE. ML:1.2 0.0001835 0.18 AML other m 2023-10-02T07:29:11.18
IV.NRCA.HHN. ML:1.3 0.000125 0.52 AML other m 2023-10-02T07:29:14.31
IV.RM33.EHN. ML:0.9 0.0000557 0.3 AML other m 2023-10-02T07:29:14.35
IV.NRCA.HHE. ML:1.4 0.0001725 0.14 AML other m 2023-10-02T07:29:14.31
IV.LNSS.HHE. ML:1.3 0.00013450000000000002 0.44 AML other m 2023-10-02T07:29:14.58
IV.MMO1.EHN. ML:1.2 0.00008659999999999999 0.26 AML other m 2023-10-02T07:29:15.16
IV.LNSS.HHN. ML:1.2 0.00009535 0.78 AML other m 2023-10-02T07:29:15.29
IV.RM33.EHE. ML:1.1 0.00007815 0.32 AML other m 2023-10-02T07:29:15.96
IV.MMO1.EHE. ML:0.9 0.00004675 1.44 AML other m 2023-10-02T07:29:15.09
IV.GAVE.EHN. ML:1.4 0.00012154999999999999 1.74 AML other m 2023-10-02T07:29:17.97
IV.GAVE.EHE. ML:1.3 0.00009429999999999999 0.26 AML other m 2023-10-02T07:29:17.20
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