Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 11-03-2021 and time 17:29:57 (Italy) in region 3 km NE Pescasseroli (AQ)

A magnitude ML 1.0 earthquake occured in region: 3 km NE Pescasseroli (AQ), on

  • 11-03-2021 16:29:57 (UTC)
  • 11-03-2021 17:29:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8280, 13.8120 at 17 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
Pescasseroli AQ 3 2203 2203
Opi AQ 6 420 2623
Scanno AQ 10 1847 4470
Villetta Barrea AQ 11 653 5123
Bisegna AQ 11 223 5346
Villalago AQ 12 568 5914
Civitella Alfedena AQ 13 296 6210
San Donato Val di Comino FR 13 2107 8317
Campoli Appennino FR 15 1725 10042
Pescosolido FR 16 1555 11597
Lecce nei Marsi AQ 16 1702 13299
Villavallelonga AQ 16 919 14218
Alvito FR 17 2713 16931
Barrea AQ 17 726 17657
Gioia dei Marsi AQ 17 1989 19646
Posta Fibreno FR 18 1139 20785
Settefrati FR 18 728 21513
Rocca Pia AQ 18 178 21691
Anversa degli Abruzzi AQ 19 341 22032
Gallinaro FR 19 1269 23301
Vicalvi FR 19 783 24084
Ortucchio AQ 20 1860 25944
Collelongo AQ 20 1233 27177

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km SW of Chieti (51815 inhabitants)
68 Km SE of L'Aquila (69753 inhabitants)
78 Km SW of Pescara (121014 inhabitants)
81 Km SW of Montesilvano (53738 inhabitants)
85 Km E of Tivoli (56533 inhabitants)
85 Km E of Latina (125985 inhabitants)
87 Km E of Velletri (53303 inhabitants)
92 Km E of Guidonia Montecelio (88673 inhabitants)
93 Km S of Teramo (54892 inhabitants)
94 Km NW of Caserta (76326 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 1.0 2021-03-11
16:29:57		 41.8283 13.8117 17 2021-07-12
16:55:03		 Bollettino Sismico Italiano INGV 88383561
Reviewed
Rev100 		ML 1.0 2021-03-11
16:29:57		 41.8308 13.8053 16 2021-03-11
16:41:21		 Sala Sismica INGV-Roma 88007361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-11 16:29:57 ± 0.05
Latitude 41.8283 ± 0.0018
Longitude 13.8117 ± 0.0036
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88383561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 260
Semi-minor axis of confidence ellipse (meter) 61
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 278
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.56657
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 88383561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-22 15:40:44

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 88007361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-11 16:41:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCEL.EHN. 2021-03-11T16:30:16.82 0.6 undecidable manual S 2 62.8926 97 0.25 44
IV.GIUL.HHZ. 2021-03-11T16:30:14.51 0.3 undecidable manual S 237 55.0005 98 0.02 70
IV.FAGN.HHZ. 2021-03-11T16:30:13.88 0.3 undecidable manual S 339 52.0035 99 0.17 68
IV.LPEL.HHE. 2021-03-11T16:30:10.25 0.6 undecidable manual S 52 39.1275 103 -0.06 47
IV.MIDA.HNZ. 2021-03-11T16:30:10.91 0.3 undecidable manual S 119 42.0246 102 -0.18 69
IT.SULP.HGE. 2021-03-11T16:30:08.37 0.3 undecidable manual S 18 30.0477 109 0.38 67
IV.VCEL.EHN. 2021-03-11T16:30:08.45 0.1 undecidable manual P 2 62.8926 97 0.06 91
IV.RNI2.HNE. 2021-03-11T16:30:08.45 0.3 undecidable manual S 116 31.4463 108 0.11 71
IV.CERA.HHZ. 2021-03-11T16:30:08.28 0.3 undecidable manual S 146 30.747 108 0.11 71
IT.SULA.HNZ. 2021-03-11T16:30:07.59 0.6 undecidable manual S 18 28.5492 110 -0.02 49
IV.GIUL.HHZ. 2021-03-11T16:30:07.16 0.1 undecidable manual P 237 55.0005 98 -0.04 92
IV.LRP.EHZ. 2021-03-11T16:30:07.39 0.3 undecidable manual S 223 27.4503 111 0.06 72
IV.FAGN.HHZ. 2021-03-11T16:30:06.77 0.3 undecidable manual P 339 52.0035 99 0.03 70
IV.INTR.HNE. 2021-03-11T16:30:05.64 0.3 undecidable manual S 21 21.7671 118 -0.31 69
IV.MIDA.HNZ. 2021-03-11T16:30:05.26 0.6 undecidable manual P 119 42.0246 102 0.03 47
IV.POFI.HHZ. 2021-03-11T16:30:04.46 0.3 undecidable manual S 214 14.7741 132 0.03 74
IV.PTQR.HHZ. 2021-03-11T16:30:04.68 0.3 undecidable manual P 302 40.1265 103 -0.26 68
IV.LPEL.HHE. 2021-03-11T16:30:04.39 0.3 undecidable manual P 52 39.1275 103 -0.39 66
IV.MCI.EHE. 2021-03-11T16:30:04.74 0.6 undecidable manual P 180 37.4292 104 0.21 46
IV.VVLD.HNZ. 2021-03-11T16:30:04.71 0.3 undecidable manual S 286 16.2726 128 -0.01 75
IV.RNI2.HNE. 2021-03-11T16:30:03.79 0.1 undecidable manual P 116 31.4463 108 0.15 94
IV.CERA.HHZ. 2021-03-11T16:30:03.38 0.3 undecidable manual P 146 30.747 108 -0.17 70
IT.SULA.HNZ. 2021-03-11T16:30:03.11 0.3 undecidable manual P 18 28.5492 110 -0.11 71
IT.SULP.HGE. 2021-03-11T16:30:03.63 0.3 undecidable manual P 18 30.0477 109 0.19 70
IT.OPI.HGZ. 2021-03-11T16:30:03.03 0.3 undecidable manual S 165 5.994 158 -0.02 76
IT.SULC.HNZ. 2021-03-11T16:30:03.20 0.6 undecidable manual P 17 27.75 111 0.09 48
IV.LRP.EHZ. 2021-03-11T16:30:02.98 0.3 undecidable manual P 223 27.4503 111 -0.08 72
IV.VVLD.HNZ. 2021-03-11T16:30:01.52 0.3 undecidable manual P 286 16.2726 128 -0.04 74
IV.POFI.HHZ. 2021-03-11T16:30:01.49 0.1 undecidable manual P 214 14.7741 132 0.1 98
IV.INTR.HNE. 2021-03-11T16:30:01.95 0.3 undecidable manual P 21 21.7671 118 -0.31 69
IT.OPI.HGZ. 2021-03-11T16:30:00.64 0.1 undecidable manual P 165 5.994 158 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHN. ML:1.1 0.00009653194499999999 0.1664 AML other m 2021-03-11T16:30:05.15
IV.POFI.HHE. ML:1.3 0.00013075699999999998 0.2176 AML other m 2021-03-11T16:30:05.13
IV.LRP.EHE. ML:0.9 0.000032529799999999995 0.72 AML other m 2021-03-11T16:30:06.85
IV.CERA.HHN. ML:1.0 0.000040819135000000006 0.72 AML other m 2021-03-11T16:30:09.58
IV.POFI.HNE. ML:1.4 0.00016471314999999998 0.768 AML other m 2021-03-11T16:30:05.13
IV.LRP.EHN. ML:0.6 0.00002035557 0.3456 AML other m 2021-03-11T16:30:08.28
IV.CERA.HNN. ML:1.0 0.000039779555 0.8192 AML other m 2021-03-11T16:30:08.58
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