Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 20-03-2023 and time 02:10:44 (UTC) in region 1 km E Barete (AQ)

A magnitude ML 1.0 earthquake occured in region: 1 km E Barete (AQ), on

  • 20-03-2023 02:10:44 (UTC)
  • 20-03-2023 03:10:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4540, 13.2960 at 17 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 1 737 737
Pizzoli AQ 2 4326 5063
Cagnano Amiterno AQ 6 1369 6432
Capitignano AQ 8 665 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
Tornimparte AQ 18 3187 87504
Antrodoco RI 18 2588 90092
Posta RI 18 694 90786
Lucoli AQ 18 1011 91797
Crognaleto TE 18 1297 93094
Amatrice RI 20 2657 95751
Micigliano RI 20 127 95878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NW of L'Aquila (69753 inhabitants)
41 Km SW of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
73 Km W of Chieti (51815 inhabitants)
74 Km SE of Foligno (57155 inhabitants)
75 Km W of Pescara (121014 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
95 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 1.0 2023-03-20
02:10:44		 42.4543 13.2962 17 2023-03-20
03:00:13		 Sala Sismica INGV-Roma 115552611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-20 02:10:44 ± 0.21
Latitude 42.4543 ± 0.0081
Longitude 13.2962 ± 0.0085
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115552611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 978
Semi-minor axis of confidence ellipse (meter) 213
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 31
Circular confidence region, given by single value of horizontal uncertainty (meter) 980.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40200
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 115552611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-20 03:00:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HNZ. 2023-03-20T02:11:19.00 3.0 undecidable manual S 0.32 0
IV.NRCA.HHZ. 2023-03-20T02:10:59.34 0.3 undecidable manual S 341 44.622 100 0 70
IV.TERO.HHZ. 2023-03-20T02:10:55.83 0.3 undecidable manual S 53 31.3464 107 -0.06 71
IV.SMA1.EHZ. 2023-03-20T02:10:53.10 0.1 undecidable manual S 9 19.7691 120 0.05 97
IV.NRCA.HHZ. 2023-03-20T02:10:53.28 0.3 undecidable manual P 341 44.622 100 0.08 70
IV.GIGS.HHZ. 2023-03-20T02:10:53.22 0.6 undecidable manual S 90 22.6551 116 -0.51 43
IV.TERO.HHZ. 2023-03-20T02:10:51.06 0.6 undecidable manual P 53 31.3464 107 -0.16 47
IV.CAMP.HHZ. 2023-03-20T02:10:51.89 0.1 undecidable manual S 46 12.876 135 0.29 94
IV.RM33.EHZ. 2023-03-20T02:10:50.44 0.1 undecidable manual S 312 8.9799 147 -0.5 92
IV.GIGS.HHZ. 2023-03-20T02:10:50.11 1.0 undecidable manual P 90 22.6551 116 0.14 24
MN.AQU.HHE. 2023-03-20T02:10:49.17 0.3 undecidable manual P 141 14.2746 132 0.28 71
IV.SMA1.EHZ. 2023-03-20T02:10:49.65 0.6 positive manual P 9 19.7691 120 0.07 49
IV.CAMP.HHZ. 2023-03-20T02:10:48.75 0.1 undecidable manual P 46 12.876 135 0.01 100
IV.RM33.EHZ. 2023-03-20T02:10:48.54 0.3 positive manual P 312 8.9799 147 0.18 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:1.8 0.0005835 0.42 AML other m 2023-03-20T02:10:47.40
IV.RM33.HNN. ML:1.8 0.0005055499999999999 0.74 AML other m 2023-03-20T02:10:48.42
IV.RM33.EHE. ML:0.9 0.00006775000000000001 0.3 AML other m 2023-03-20T02:10:50.66
IV.RM33.EHN. ML:0.8 0.0000494 0.58 AML other m 2023-03-20T02:10:51.11
IV.SMA1.EHE. ML:1.1 0.00007714999999999999 0.6 AML other m 2023-03-20T02:10:53.38
IV.SMA1.EHN. ML:1.1 0.00007489999999999999 0.4 AML other m 2023-03-20T02:10:53.44
IV.TERO.HHE. ML:0.7 0.00001765 0.44 AML other m 2023-03-20T02:10:56.60
IV.TERO.HHN. ML:0.6 0.0000149 1.3 AML other m 2023-03-20T02:10:57.84
IV.NRCA.HHN. ML:0.8 0.0000213 0.16 AML other m 2023-03-20T02:11:00.89
IV.NRCA.HHE. ML:1.0 0.000027999999999999996 0.1 AML other m 2023-03-20T02:11:00.97
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