Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 22-03-2023 and time 16:55:37 (Italy) in region 1 km SW Civitella Alfedena (AQ)

A magnitude ML 2.1 earthquake occured in region: 1 km SW Civitella Alfedena (AQ), on

  • 22-03-2023 15:55:37 (UTC)
  • 22-03-2023 16:55:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7550, 13.9370 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
Civitella Alfedena AQ 1 296 296
Villetta Barrea AQ 3 653 949
Barrea AQ 5 726 1675
Alfedena AQ 9 864 2539
Scontrone AQ 9 574 3113
Opi AQ 9 420 3533
San Donato Val di Comino FR 11 2107 5640
Settefrati FR 12 728 6368
Montenero Val Cocchiara IS 12 538 6906
Pizzone IS 13 329 7235
Picinisco FR 13 1218 8453
Pescasseroli AQ 14 2203 10656
Castel di Sangro AQ 15 6538 17194
Castel San Vincenzo IS 15 516 17710
Roccaraso AQ 16 1627 19337
Gallinaro FR 16 1269 20606
San Biagio Saracinisco FR 16 349 20955
Rivisondoli AQ 17 700 21655
Scanno AQ 17 1847 23502
Rionero Sannitico IS 18 1118 24620
Villa Latina FR 18 1241 25861
Alvito FR 18 2713 28574
Cerro al Volturno IS 18 1281 29855
Scapoli IS 19 680 30535
Pescocostanzo AQ 19 1128 31663
Atina FR 19 4316 35979
Rocchetta a Volturno IS 19 1113 37092

Municipalities with at least 50000 inhabitants

An earthquake occurred to
69 Km S of Chieti (51815 inhabitants)
80 Km SE of L'Aquila (69753 inhabitants)
82 Km S of Pescara (121014 inhabitants)
83 Km NW of Caserta (76326 inhabitants)
86 Km S of Montesilvano (53738 inhabitants)
90 Km N of Aversa (53047 inhabitants)
92 Km E of Latina (125985 inhabitants)
95 Km N of Giugliano in Campania (122974 inhabitants)
97 Km E of Velletri (53303 inhabitants)
97 Km E of Tivoli (56533 inhabitants)
97 Km NW of Acerra (59573 inhabitants)
98 Km N of Marano di Napoli (59874 inhabitants)
98 Km NW of Afragola (65057 inhabitants)
99 Km NW of Casoria (77642 inhabitants)
99 Km NW of Benevento (60091 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 2.1 2023-03-22
15:55:37		 41.7553 13.9368 11 2024-03-01
17:18:16		 Bollettino Sismico Italiano INGV 121282021
Reviewed
Rev100 		ML 2.1 2023-03-22
15:55:37		 41.7527 13.9312 10 2023-03-22
16:17:28		 Sala Sismica INGV-Roma 115633711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-22 15:55:37 ± 0.06
Latitude 41.7553 ± 0.0027
Longitude 13.9368 ± 0.0036
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 121282021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 298
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.08184
Epicentral distance of station farthest from the epicenter (degree) 0.98116
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 115633711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-22 16:17:28

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 121282021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-09-20 15:37:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MELA.HHZ. 2023-03-22T15:56:05.90 0.6 undecidable manual S 93 98.6235 50 0.03 43
IV.GIGS.HHZ. 2023-03-22T15:56:01.80 0.6 undecidable manual S 339 83.0502 50 0.11 44
IV.RCAV.EHZ. 2023-03-22T15:56:00.94 0.6 undecidable manual S 278 82.0512 -0.43 41
IV.VCEL.EHZ. 2023-03-22T15:55:58.06 0.6 undecidable manual S 354 71.373 50 -0.52 41
IV.PIGN.HHZ. 2023-03-22T15:55:57.40 0.6 undecidable manual S 162 64.7907 50 0.56 41
IV.FAGN.HHZ. 2023-03-22T15:55:56.10 1.0 undecidable manual S 333 63.6918 50 -0.43 21
IV.GIUL.HNN. 2023-03-22T15:55:56.09 0.3 undecidable manual S 249 60.5949 50 0.37 65
IV.SMA1.EHZ. 2023-03-22T15:55:55.31 0.6 undecidable manual P 333 108.9132 50 0.05 42
IV.T0110.HHE. 2023-03-22T15:55:54.40 0.6 undecidable manual S 346 54.2013 50 0.39 44
IV.PTQR.HHZ. 2023-03-22T15:55:53.90 0.6 undecidable manual S 304 53.3022 50 0.15 46
IV.MELA.HHZ. 2023-03-22T15:55:53.00 0.3 undecidable manual P 93 98.6235 50 -0.67 55
IV.VAGA.HHZ. 2023-03-22T15:55:51.80 1.0 undecidable manual S 147 45.0216 50 0.24 23
IV.LPEL.HHZ. 2023-03-22T15:55:50.10 0.6 undecidable manual S 32 38.2284 50 0.37 45
IV.GIGS.HHZ. 2023-03-22T15:55:50.80 0.3 undecidable manual P 339 83.0502 50 -0.46 61
IV.VCEL.EHZ. 2023-03-22T15:55:49.45 0.3 undecidable manual P 354 71.373 50 -0.01 69
IT.SULP.HGZ. 2023-03-22T15:55:49.80 1.0 undecidable manual S 359 36.5412 50 0.5 22
IV.PABO.HHZ. 2023-03-22T15:55:49.40 0.6 undecidable manual S 91 37.2294 50 -0.08 48
IT.SULA.HNE. 2023-03-22T15:55:49.40 0.6 undecidable manual S 357 35.3424 50 0.44 45
IV.PIGN.HHZ. 2023-03-22T15:55:48.25 0.3 undecidable manual P 162 64.7907 50 -0.2 67
IV.LRP.EHZ. 2023-03-22T15:55:48.00 0.3 undecidable manual S 248 31.4463 50 0.09 73
IV.FAGN.HHZ. 2023-03-22T15:55:48.81 0.6 undecidable manual P 333 63.6918 50 0.53 41
IV.GIUL.HNN. 2023-03-22T15:55:47.64 0.1 undecidable manual P 249 60.5949 50 -0.17 90
IV.INTR.HHZ. 2023-03-22T15:55:47.20 0.6 undecidable manual S 355 28.5492 50 0.04 49
IV.SGG.HHZ. 2023-03-22T15:55:47.18 0.3 undecidable manual P 138 54.9006 50 0.25 67
IV.VVLD.HHZ. 2023-03-22T15:55:46.90 0.3 undecidable manual S 296 28.8489 50 -0.34 69
IV.T0110.HHE. 2023-03-22T15:55:46.84 0.3 undecidable manual P 346 54.2013 50 0.02 71
IV.PTQR.HHZ. 2023-03-22T15:55:46.30 0.3 undecidable manual P 304 53.3022 50 -0.37 66
IV.VAGA.HHZ. 2023-03-22T15:55:45.25 0.6 undecidable manual P 147 45.0216 50 -0.16 47
IV.LPEL.HHZ. 2023-03-22T15:55:44.22 0.3 undecidable manual P 32 38.2284 50 -0.13 71
IV.PABO.HHZ. 2023-03-22T15:55:44.56 0.1 undecidable manual P 91 37.2294 50 0.35 91
IV.POFI.HHZ. 2023-03-22T15:55:44.40 0.6 undecidable manual S 257 19.0698 119 -0.2 48
IV.CERA.HNZ. 2023-03-22T15:55:44.20 0.6 undecidable manual S 159 18.7701 120 -0.29 47
IV.LRP.EHZ. 2023-03-22T15:55:43.25 0.1 undecidable manual P 248 31.4463 50 -0.05 98
IT.SULA.HNE. 2023-03-22T15:55:43.85 0.1 undecidable manual P 357 35.3424 50 -0.06 97
IT.SULP.HGZ. 2023-03-22T15:55:43.99 0.1 undecidable manual P 359 36.5412 50 -0.11 95
IV.MCI.EHZ. 2023-03-22T15:55:43.25 0.1 undecidable manual P 199 31.0467 50 0 99
IT.OPI.HGZ. 2023-03-22T15:55:42.10 0.3 undecidable manual S 285 9.0798 140 0.21 74
IV.INTR.HHZ. 2023-03-22T15:55:42.79 0.1 undecidable manual P 355 28.5492 50 -0.07 98
IV.VVLD.HHZ. 2023-03-22T15:55:42.81 0.1 negative manual P 296 28.8489 50 -0.1 97
IV.POFI.HHZ. 2023-03-22T15:55:41.42 0.1 positive manual P 257 19.0698 119 0.04 100
IV.CERA.HNZ. 2023-03-22T15:55:41.24 0.3 undecidable manual P 159 18.7701 120 -0.09 74
IT.OPI.HGZ. 2023-03-22T15:55:40.16 0.1 undecidable manual P 285 9.0798 140 0.34 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHE. ML:2.0 0.0007035 0.2 AML other m 2023-03-22T15:55:45.04
IV.POFI.HNE. ML:2.0 0.0008055 0.2 AML other m 2023-03-22T15:55:45.05
IV.POFI.HHN. ML:1.9 0.0006389637 0.1664 AML other m 2023-03-22T15:55:44.90
IV.POFI.HNN. ML:2.0 0.00072775528 0.1664 AML other m 2023-03-22T15:55:44.92
IV.CERA.HHN. ML:2.5 0.002665 0.46 AML other m 2023-03-22T15:55:46.65
IV.CERA.HHE. ML:2.5 0.0024000000000000002 0.42 AML other m 2023-03-22T15:55:46.72
IV.VVLD.HHE. ML:2.4 0.0011799999999999998 0.46 AML other m 2023-03-22T15:55:47.41
IV.VVLD.HHN. ML:2.3 0.000955 0.34 AML other m 2023-03-22T15:55:47.80
IV.LRP.EHN. ML:2.2 0.0006504999999999999 0.26 AML other m 2023-03-22T15:55:48.35
IV.LRP.EHE. ML:2.6 0.00164 0.3 AML other m 2023-03-22T15:55:48.37
IV.INTR.HHE. ML:2.5 0.001754448 0.128 AML other m 2023-03-22T15:55:49.32
IV.INTR.HHN. ML:2.6 0.002199262 0.1664 AML other m 2023-03-22T15:55:49.21
IV.MCI.EHN. ML:2.5 0.0014 0.26 AML other m 2023-03-22T15:55:50.23
IV.MCI.EHE. ML:2.6 0.001665 0.94 AML other m 2023-03-22T15:55:51.43
IV.PABO.HHE. ML:1.7 0.0001855 1.22 AML other m 2023-03-22T15:55:51.61
IV.LPEL.HHE. ML:2.5 0.00122 0.42 AML other m 2023-03-22T15:55:51.68
IV.PABO.HHN. ML:2.1 0.000518 0.26 AML other m 2023-03-22T15:55:53.39
IV.LPEL.HHN. ML:2.3 0.0008100000000000001 0.76 AML other m 2023-03-22T15:55:54.02
IV.VAGA.HHE. ML:2.0 0.0002635 1.24 AML other m 2023-03-22T15:55:54.37
IV.PTQR.HHN. ML:1.8 0.000155 0.9 AML other m 2023-03-22T15:55:55.35
IV.PTQR.HHE. ML:1.9 0.00017299999999999998 1.72 AML other m 2023-03-22T15:55:55.86
IV.SGG.HHE. ML:1.9 0.00016849999999999998 1.3 AML other m 2023-03-22T15:55:58.88
IV.SGG.HHN. ML:1.8 0.00014950000000000003 0.82 AML other m 2023-03-22T15:55:58.02
IV.VAGA.HHN. ML:2.2 0.0005024999999999999 1.66 AML other m 2023-03-22T15:55:59.08
IV.PIGN.HHE. ML:1.7 0.0000991 0.42 AML other m 2023-03-22T15:56:00.36
IV.FAGN.HHE. ML:2.5 0.0005809999999999999 0.3 AML other m 2023-03-22T15:56:00.75
IV.VCEL.EHE. ML:2.4 0.00038250000000000003 0.64 AML other m 2023-03-22T15:56:00.89
IV.FAGN.HHN. ML:2.5 0.0005620000000000001 1.72 AML other m 2023-03-22T15:56:02.87
IV.VCEL.EHN. ML:2.3 0.000301 0.3 AML other m 2023-03-22T15:56:03.00
IV.GIGS.HHN. ML:1.4 0.000036049999999999995 0.5 AML other m 2023-03-22T15:56:04.39
IV.CERT.HHE. ML:1.8 0.00007384999999999999 0.32 AML other m 2023-03-22T15:56:04.88
IV.GIGS.HHE. ML:1.5 0.00004055 1.36 AML other m 2023-03-22T15:56:04.22
IV.PIGN.HHN. ML:1.6 0.00008030000000000001 0.44 AML other m 2023-03-22T15:56:06.03
IV.MELA.HHN. ML:2.1 0.00012250955 0.1408 AML other m 2023-03-22T15:56:06.69
IV.RCAV.EHN. ML:1.9 0.0000983 0.42 AML other m 2023-03-22T15:56:08.40
IV.CERT.HHN. ML:1.8 0.00009120000000000001 1.48 AML other m 2023-03-22T15:56:08.17
IV.RCAV.EHE. ML:2.0 0.0001215 0.48 AML other m 2023-03-22T15:56:09.31
IV.MELA.HHE. ML:2.0 0.00010163272000000002 0.6016 AML other m 2023-03-22T15:56:13.15
IV.SMA1.EHE. ML:1.9 0.00007580000000000001 0.58 AML other m 2023-03-22T15:56:18.01
IV.SMA1.EHN. ML:1.9 0.00006914999999999999 0.44 AML other m 2023-03-22T15:56:23.89
IV.CERA.HNN. ML:2.5 0.002557469 0.448 AML other m 2023-03-22T15:55:46.64
IV.CERA.HNE. ML:2.5 0.002328666 0.4096 AML other m 2023-03-22T15:55:46.72
IV.INTR.HNN. ML:2.6 0.0021087964999999998 0.1536 AML other m 2023-03-22T15:55:49.21
IV.INTR.HNE. ML:2.5 0.0016746205 0.1152 AML other m 2023-03-22T15:55:49.33
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
Waveforms Seismic signals in miniseed + resp format Download