Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 30-03-2023 and time 16:46:38 (UTC) in region 2 km SE Lecce nei Marsi (AQ)

A magnitude ML 1.3 earthquake occured in region: 2 km SE Lecce nei Marsi (AQ), on

  • 30-03-2023 16:46:38 (UTC)
  • 30-03-2023 18:46:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9140, 13.6970 at 13 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
Lecce nei Marsi AQ 2 1702 1702
Gioia dei Marsi AQ 5 1989 3691
Bisegna AQ 5 223 3914
Ortucchio AQ 6 1860 5774
Villavallelonga AQ 8 919 6693
Collelongo AQ 10 1233 7926
Ortona dei Marsi AQ 10 542 8468
Villalago AQ 12 568 9036
San Benedetto dei Marsi AQ 12 3909 12945
Anversa degli Abruzzi AQ 13 341 13286
Pescina AQ 13 4133 17419
Pescasseroli AQ 14 2203 19622
Trasacco AQ 14 6246 25868
Cocullo AQ 15 230 26098
Scanno AQ 15 1847 27945
Balsorano AQ 16 3569 31514
San Vincenzo Valle Roveto AQ 17 2347 33861
Collarmele AQ 17 894 34755
Bugnara AQ 18 1125 35880
Opi AQ 19 420 36300
Cerchio AQ 19 1635 37935
Pescosolido FR 19 1555 39490
Civita d'Antino AQ 19 979 40469
Campoli Appennino FR 20 1725 42194
Goriano Sicoli AQ 20 569 42763
Luco dei Marsi AQ 20 6079 48842
Prezza AQ 20 945 49787
Introdacqua AQ 20 2126 51913

Municipalities with at least 50000 inhabitants

An earthquake occurred to
55 Km SE of L'Aquila (69753 inhabitants)
62 Km SW of Chieti (51815 inhabitants)
75 Km E of Tivoli (56533 inhabitants)
75 Km SW of Pescara (121014 inhabitants)
77 Km SW of Montesilvano (53738 inhabitants)
80 Km E of Velletri (53303 inhabitants)
81 Km E of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Latina (125985 inhabitants)
83 Km S of Teramo (54892 inhabitants)
94 Km E of Aprilia (73446 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.3 2023-03-30
16:46:38		 41.9143 13.6973 13 2023-03-30
17:03:21		 Sala Sismica INGV-Roma 115889081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-30 16:46:38 ± 0.07
Latitude 41.9143 ± 0.0036
Longitude 13.6973 ± 0.0048
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115889081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 419
Semi-minor axis of confidence ellipse (meter) 102
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.38491
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 115889081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-30 17:03:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.STON.BHZ. 2023-03-30T16:48:14.76 3.0 undecidable manual Sg 6.01 0
IV.IMOL.HNZ. 2023-03-30T16:48:03.80 3.0 undecidable manual Sg 0.55 0
IV.PIPA.HHZ. 2023-03-30T16:47:39.45 3.0 negative manual Pg 6.15 0
IV.MGR.HHZ. 2023-03-30T16:47:17.58 3.0 undecidable manual Pn -0.23 0
IV.MMO1.EHZ. 2023-03-30T16:47:11.90 3.0 undecidable manual S -6.37 0
IV.SNTG.HHZ. 2023-03-30T16:47:08.47 3.0 undecidable manual P 0.83 0
IV.LPEL.HHZ. 2023-03-30T16:46:52.51 0.6 undecidable manual S 70 0.3849 93 0.05 48
IV.T0110.HHZ. 2023-03-30T16:46:50.49 0.6 undecidable manual S 11 0.3202 95 -0.08 48
IV.PTQR.HHZ. 2023-03-30T16:46:48.22 0.6 undecidable manual S 296 0.2455 97 -0.14 48
IV.POFI.HHZ. 2023-03-30T16:46:46.77 0.6 undecidable manual S 177 0.1970 101 -0.17 49
IT.OPI.HGE. 2023-03-30T16:46:46.19 0.6 undecidable manual S 144 0.1700 105 0.04 50
IV.INTR.HHZ. 2023-03-30T16:46:46.48 0.6 undecidable manual S 58 0.1826 103 -0.03 50
IV.LPEL.HHZ. 2023-03-30T16:46:46.65 0.6 negative manual P 70 0.3849 93 0.04 48
IV.T0110.HHZ. 2023-03-30T16:46:45.33 0.6 negative manual P 11 0.3202 95 -0.18 47
IV.PTQR.HHZ. 2023-03-30T16:46:44.92 1.0 undecidable manual P 296 0.2455 97 0.69 21
IV.POFI.HHZ. 2023-03-30T16:46:43.26 0.3 positive manual P 177 0.1970 101 -0.16 73
IT.OPI.HGE. 2023-03-30T16:46:43.04 0.1 undecidable manual P 144 0.1700 105 0.08 100
IV.INTR.HHZ. 2023-03-30T16:46:43.27 0.3 negative manual P 58 0.1826 103 0.1 75
IV.VVLD.HHZ. 2023-03-30T16:46:43.74 0.6 undecidable manual S 231 0.0710 140 0.08 50
IV.VVLD.HHZ. 2023-03-30T16:46:41.56 1.0 undecidable manual P 231 0.0710 140 0.04 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHE. ML:1.4 0.000337 1.62 AML other m 2023-03-30T16:46:43.85
IV.VVLD.HNE. ML:1.5 0.00034599999999999995 0.68 AML other m 2023-03-30T16:46:43.85
IV.VVLD.HHN. ML:1.5 0.000345 1.58 AML other m 2023-03-30T16:46:43.87
IV.VVLD.HNN. ML:1.4 0.000286 1.7 AML other m 2023-03-30T16:46:43.02
IV.POFI.HHE. ML:0.9 0.0000553 0.28 AML other m 2023-03-30T16:46:47.16
IV.INTR.HHN. ML:1.7 0.000326 0.84 AML other m 2023-03-30T16:46:47.25
IV.POFI.HHN. ML:0.9 0.000049850000000000006 0.36 AML other m 2023-03-30T16:46:47.44
IV.INTR.HHE. ML:1.3 0.00014749999999999998 0.7 AML other m 2023-03-30T16:46:47.24
IV.T0110.HHN. ML:1.2 0.00005835 0.42 AML other m 2023-03-30T16:46:50.76
IV.LPEL.HHN. ML:1.2 0.00005665000000000001 0.64 AML other m 2023-03-30T16:46:53.32
IV.T0110.HHE. ML:1.3 0.00007005 1.48 AML other m 2023-03-30T16:46:54.80
IV.LPEL.HHE. ML:1.3 0.0000649 0.12 AML other m 2023-03-30T16:46:54.94
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download