Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 29-09-2023 and time 23:57:04 (UTC) in region 2 km E Barete (AQ)

A magnitude ML 0.8 earthquake occured in region: 2 km E Barete (AQ), on

  • 29-09-2023 23:57:04 (UTC)
  • 30-09-2023 01:57:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4570, 13.3010 at 14 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
Barete AQ 2 737 737
Pizzoli AQ 2 4326 5063
Cagnano Amiterno AQ 6 1369 6432
Capitignano AQ 7 665 7097
Montereale AQ 9 2581 9678
Scoppito AQ 10 3727 13405
Campotosto AQ 13 542 13947
L'Aquila AQ 14 69753 83700
Borbona RI 15 617 84317
Crognaleto TE 18 1297 85614
Tornimparte AQ 18 3187 88801
Posta RI 18 694 89495
Antrodoco RI 19 2588 92083
Lucoli AQ 19 1011 93094
Amatrice RI 19 2657 95751

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NW of L'Aquila (69753 inhabitants)
40 Km SW of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
69 Km NE of Tivoli (56533 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
72 Km W of Chieti (51815 inhabitants)
74 Km SE of Foligno (57155 inhabitants)
75 Km W of Pescara (121014 inhabitants)
92 Km NE of Roma (2864731 inhabitants)
96 Km NE of Velletri (53303 inhabitants)
98 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 0.8 2023-09-29
23:57:04		 42.4567 13.3007 14 2023-09-30
00:03:50		 Sala Sismica INGV-Roma 121598841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-29 23:57:04 ± 0.17
Latitude 42.4567 ± 0.0063
Longitude 13.3007 ± 0.0085
Depth (km) 14 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121598841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 717
Semi-minor axis of confidence ellipse (meter) 537
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 27
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
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) 0.41818
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 121598841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-30 00:03:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2023-09-29T23:57:18.54 0.3 undecidable manual S 340 44.5221 94 -0.12 70
IV.TERO.HHZ. 2023-09-29T23:57:14.79 0.3 undecidable manual S 53 30.9468 98 -0.25 71
IV.SRES.HHZ. 2023-09-29T23:57:13.30 3.0 undecidable manual P -0.05 0
IV.NRCA.HHZ. 2023-09-29T23:57:12.39 0.6 positive manual P 340 44.5221 94 -0.2 46
IV.SMA1.EHZ. 2023-09-29T23:57:12.40 0.3 undecidable manual S 8 19.4694 107 0.33 71
IV.T0110.HHE. 2023-09-29T23:57:12.94 0.6 undecidable manual P 123 46.4202 94 0.05 48
IV.GIGS.HHE. 2023-09-29T23:57:12.76 0.3 undecidable manual S 91 22.2555 104 -0.02 75
IV.TERO.HHZ. 2023-09-29T23:57:10.35 1.0 undecidable manual P 53 30.9468 98 -0.15 24
IV.RM33.EHZ. 2023-09-29T23:57:09.65 0.3 undecidable manual S 310 9.0798 137 -0.05 75
IV.GIGS.HHE. 2023-09-29T23:57:09.20 0.1 undecidable manual P 91 22.2555 104 0.01 100
IV.SMA1.EHZ. 2023-09-29T23:57:08.88 1.0 positive manual P 8 19.4694 107 0.1 25
IV.RM33.EHZ. 2023-09-29T23:57:07.56 0.3 positive manual P 310 9.0798 137 0.15 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:0.7 0.00004905 1.44 AML other m 2023-09-29T23:57:09.88
IV.RM33.EHN. ML:0.6 0.000039699999999999996 1.32 AML other m 2023-09-29T23:57:10.75
IV.SMA1.EHE. ML:1.0 0.00006805 0.48 AML other m 2023-09-29T23:57:12.92
IV.SMA1.EHN. ML:0.8 0.00003885 0.2 AML other m 2023-09-29T23:57:12.98
IV.NRCA.HHN. ML:0.8 0.00002175 0.12 AML other m 2023-09-29T23:57:18.72
IV.NRCA.HHE. ML:1.1 0.000037199999999999996 0.38 AML other m 2023-09-29T23:57:19.39
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