Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-05-2023 and time 16:09:10 (Italy) in region 4 km SW Bisegna (AQ)

A magnitude ML 1.6 earthquake occured in region: 4 km SW Bisegna (AQ), on

  • 28-05-2023 14:09:10 (UTC)
  • 28-05-2023 16:09:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8910, 13.7260 at 10 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
Bisegna AQ 4 223 223
Lecce nei Marsi AQ 6 1702 1925
Gioia dei Marsi AQ 8 1989 3914
Villavallelonga AQ 9 919 4833
Ortucchio AQ 10 1860 6693
Villalago AQ 11 568 7261
Pescasseroli AQ 11 2203 9464
Collelongo AQ 12 1233 10697
Ortona dei Marsi AQ 12 542 11239
Scanno AQ 13 1847 13086
Anversa degli Abruzzi AQ 13 341 13427
Opi AQ 15 420 13847
San Benedetto dei Marsi AQ 15 3909 17756
Pescina AQ 16 4133 21889
Cocullo AQ 16 230 22119
Balsorano AQ 17 3569 25688
Pescosolido FR 17 1555 27243
Trasacco AQ 17 6246 33489
Campoli Appennino FR 17 1725 35214
San Vincenzo Valle Roveto AQ 18 2347 37561
Bugnara AQ 18 1125 38686
Introdacqua AQ 19 2126 40812

Municipalities with at least 50000 inhabitants

An earthquake occurred to
58 Km SE of L'Aquila (69753 inhabitants)
63 Km SW of Chieti (51815 inhabitants)
76 Km SW of Pescara (121014 inhabitants)
77 Km E of Tivoli (56533 inhabitants)
78 Km SW of Montesilvano (53738 inhabitants)
82 Km E of Velletri (53303 inhabitants)
83 Km NE of Latina (125985 inhabitants)
84 Km E of Guidonia Montecelio (88673 inhabitants)
86 Km S of Teramo (54892 inhabitants)
95 Km E of Aprilia (73446 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 1.6 2023-05-28
14:09:10		 41.8912 13.7262 10 2023-05-28
14:17:04		 Sala Sismica INGV-Roma 117816401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-28 14:09:10 ± 0.07
Latitude 41.8912 ± 0.0027
Longitude 13.7262 ± 0.0060
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117816401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 455
Semi-minor axis of confidence ellipse (meter) 290
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 115
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50992
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 117816401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-28 14:17:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.DGI.HHZ. 2023-05-28T14:10:47.26 3.0 undecidable manual Sn -0.19 0
IV.SFI.EHZ. 2023-05-28T14:10:17.95 3.0 undecidable manual Sn 0.69 0
IV.SGO.HHZ. 2023-05-28T14:10:07.77 3.0 undecidable manual Sg 4.22 0
IV.CDRU.HHZ. 2023-05-28T14:09:45.86 3.0 undecidable manual Pg 6 0
IV.MML1.EHZ. 2023-05-28T14:09:33.03 3.0 negative manual P 1.58 0
OT.OT17.EHZ. 2023-05-28T14:09:30.52 3.0 positive manual P 0.22 0
IV.VCEL.EHZ. 2023-05-28T14:09:29.35 0.6 undecidable manual S 10 56.5989 50 0.68 39
IV.VITU.HHZ. 2023-05-28T14:09:26.62 3.0 undecidable manual P -1.31 0
IV.LPEL.HHZ. 2023-05-28T14:09:24.45 0.3 undecidable manual S 65 41.4252 50 -0.17 70
IV.CERA.HHZ. 2023-05-28T14:09:24.55 0.6 undecidable manual S 143 40.5261 50 0.18 46
IV.T0110.HHZ. 2023-05-28T14:09:23.58 0.6 undecidable manual S 6 37.7289 50 -0.05 48
IV.VCEL.EHZ. 2023-05-28T14:09:21.13 0.1 undecidable manual P 10 56.5989 50 -0.02 93
IV.PTQR.HHZ. 2023-05-28T14:09:21.59 0.6 undecidable manual S 299 30.5472 50 -0.11 48
IV.GIUL.HHZ. 2023-05-28T14:09:20.30 3.0 positive manual P -0.51 0
IV.INTR.HHZ. 2023-05-28T14:09:18.60 0.3 undecidable manual S 48 19.869 117 -0.01 75
IV.LPEL.HHZ. 2023-05-28T14:09:18.72 0.3 undecidable manual P 65 41.4252 50 -0.09 71
IV.POFI.HHZ. 2023-05-28T14:09:18.43 0.3 undecidable manual S 183 19.2696 118 0 75
IV.CERA.HHZ. 2023-05-28T14:09:18.68 0.3 positive manual P 143 40.5261 50 0.01 72
IV.PTQR.HHZ. 2023-05-28T14:09:17.20 0.6 undecidable manual P 299 30.5472 50 0.07 48
IV.T0110.HHZ. 2023-05-28T14:09:17.98 0.3 undecidable manual P 6 37.7289 50 -0.26 69
IV.LRP.EHZ. 2023-05-28T14:09:16.40 3.0 positive manual P -0.35 0
IV.POFI.HHZ. 2023-05-28T14:09:15.24 0.1 positive manual P 183 19.2696 118 0 100
IV.INTR.HHZ. 2023-05-28T14:09:15.42 0.1 undecidable manual P 48 19.869 117 0.08 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHE. ML:1.5 0.00023549999999999998 0.44 AML other m 2023-05-28T14:09:18.69
IV.POFI.HHN. ML:1.3 0.00016149999999999997 1.68 AML other m 2023-05-28T14:09:18.12
IV.LRP.EHN. ML:1.2 0.00007199999999999999 0.18 AML other m 2023-05-28T14:09:21.35
IV.LRP.EHE. ML:1.6 0.0001865 0.52 AML other m 2023-05-28T14:09:21.37
IV.T0110.HHN. ML:1.6 0.000154 1.08 AML other m 2023-05-28T14:09:24.66
IV.T0110.HHE. ML:1.8 0.000214 0.22 AML other m 2023-05-28T14:09:24.68
IV.PTQR.HHN. ML:1.0 0.00004615 0.7 AML other m 2023-05-28T14:09:24.51
IV.LPEL.HHN. ML:1.6 0.00014050000000000003 0.44 AML other m 2023-05-28T14:09:25.36
IV.PTQR.HHE. ML:1.1 0.000060400000000000004 0.18 AML other m 2023-05-28T14:09:26.69
IV.LPEL.HHE. ML:1.6 0.00014549999999999999 0.18 AML other m 2023-05-28T14:09:27.39
IV.GIUL.HHE. ML:1.4 0.000052699999999999993 1.58 AML other m 2023-05-28T14:09:28.10
IV.CERA.HHE. ML:1.8 0.00020150000000000002 0.38 AML other m 2023-05-28T14:09:28.46
IV.CERA.HHN. ML:1.6 0.0001395631 0.48 AML other m 2023-05-28T14:09:28.42
IV.GIUL.HHN. ML:1.3 0.00004555 0.66 AML other m 2023-05-28T14:09:29.92
IV.VCEL.EHN. ML:1.6 0.000084265795 0.2944 AML other m 2023-05-28T14:09:34.17
IV.VCEL.EHE. ML:1.7 0.0001052 1.02 AML other m 2023-05-28T14:09:31.64
IV.INTR.HHE. ML:2.0 0.00072155335 0.2432 AML other m 2023-05-28T14:09:19.45
IV.INTR.HHN. ML:2.0 0.0007163515499999999 0.1216 AML other m 2023-05-28T14:09:18.94
IV.CERA.HNE. ML:1.8 0.0001904341 0.3584 AML other m 2023-05-28T14:09:28.64
IV.CERA.HNN. ML:1.6 0.00014205397 0.512 AML other m 2023-05-28T14:09:28.94
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