Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 11-03-2021 and time 22:37:29 (Italy) in region 4 km NE Pescasseroli (AQ)

A magnitude ML 1.4 earthquake occured in region: 4 km NE Pescasseroli (AQ), on

  • 11-03-2021 21:37:29 (UTC)
  • 11-03-2021 22:37:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8360, 13.8220 at 18 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 4 2203 2203
Opi AQ 6 420 2623
Scanno AQ 9 1847 4470
Bisegna AQ 11 223 4693
Villetta Barrea AQ 11 653 5346
Villalago AQ 11 568 5914
Civitella Alfedena AQ 13 296 6210
San Donato Val di Comino FR 14 2107 8317
Lecce nei Marsi AQ 16 1702 10019
Campoli Appennino FR 16 1725 11744
Pescosolido FR 17 1555 13299
Villavallelonga AQ 17 919 14218
Barrea AQ 17 726 14944
Gioia dei Marsi AQ 17 1989 16933
Rocca Pia AQ 17 178 17111
Alvito FR 18 2713 19824
Anversa degli Abruzzi AQ 18 341 20165
Settefrati FR 19 728 20893
Posta Fibreno FR 19 1139 22032
Pettorano sul Gizio AQ 19 1376 23408
Ortona dei Marsi AQ 20 542 23950
Ortucchio AQ 20 1860 25810
Gallinaro FR 20 1269 27079
Vicalvi FR 20 783 27862

Municipalities with at least 50000 inhabitants

An earthquake occurred to
64 Km SW of Chieti (51815 inhabitants)
67 Km SE of L'Aquila (69753 inhabitants)
77 Km SW of Pescara (121014 inhabitants)
80 Km SW of Montesilvano (53738 inhabitants)
86 Km E of Tivoli (56533 inhabitants)
86 Km E of Latina (125985 inhabitants)
88 Km E of Velletri (53303 inhabitants)
92 Km S of Teramo (54892 inhabitants)
92 Km E of Guidonia Montecelio (88673 inhabitants)
95 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 1.4 2021-03-11
21:37:29		 41.836 13.8215 18 2021-07-12
16:55:03		 Bollettino Sismico Italiano INGV 88427051
Reviewed
Rev100 		ML 1.4 2021-03-11
21:37:29		 41.832 13.8223 18 2021-03-11
21:50:15		 Sala Sismica INGV-Roma 88012671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-11 21:37:29 ± 0.06
Latitude 41.8360 ± 0.0018
Longitude 13.8215 ± 0.0024
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88427051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 250
Semi-minor axis of confidence ellipse (meter) 65
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 281
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
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) 0.06025
Epicentral distance of station farthest from the epicenter (degree) 0.55848
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 88427051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-24 09:38:54

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 88012671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-11 21:50:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCEL.EHN. 2021-03-11T21:37:48.92 0.6 undecidable manual S 1 61.9935 98 0.07 45
IV.PTQR.HHZ. 2021-03-11T21:37:43.29 0.6 undecidable manual S 301 40.4262 104 0.09 47
IV.MIDA.HHZ. 2021-03-11T21:37:43.52 0.3 undecidable manual S 121 41.7249 104 -0.03 71
IV.LPEL.HHZ. 2021-03-11T21:37:42.61 0.3 undecidable manual S 52 37.9287 106 0.05 71
IV.CERA.HHZ. 2021-03-11T21:37:40.92 0.3 undecidable manual S 148 31.0467 110 0.11 71
IT.SULA.HNE. 2021-03-11T21:37:40.23 0.3 undecidable manual S 17 27.4503 114 0.3 69
IV.RNI2.HHZ. 2021-03-11T21:37:40.88 0.6 undecidable manual S 118 31.0467 110 0.06 48
IV.VCEL.EHN. 2021-03-11T21:37:40.72 0.1 undecidable manual P 1 61.9935 98 -0.05 91
IT.SULP.HGZ. 2021-03-11T21:37:40.53 0.6 undecidable manual S 18 28.9488 112 0.23 47
IV.LRP.EHZ. 2021-03-11T21:37:40.03 0.3 undecidable manual S 223 28.5492 113 -0.17 71
IV.GIUL.HHZ. 2021-03-11T21:37:39.74 0.6 undecidable manual P 237 56.1993 99 -0.14 45
IT.SULC.HNZ. 2021-03-11T21:37:39.98 0.6 undecidable manual S 16 26.751 114 0.23 47
IV.FAGN.HHZ. 2021-03-11T21:37:39.08 0.6 undecidable manual P 338 51.5151 101 -0.1 46
IV.INTR.HHZ. 2021-03-11T21:37:38.16 0.3 undecidable manual S 19 20.6682 123 -0.16 72
IV.TST02.HHE. 2021-03-11T21:37:38.86 0.6 undecidable manual P 72 47.9187 102 0.23 45
IV.GUAR.HNN. 2021-03-11T21:37:38.22 0.6 undecidable manual P 264 42.3243 104 0.43 43
IV.MIDA.HHZ. 2021-03-11T21:37:37.49 0.3 undecidable manual P 121 41.7249 104 -0.21 69
IV.MCI.EHE. 2021-03-11T21:37:37.10 0.6 undecidable manual P 181 38.2284 105 -0.08 47
IV.POFI.HHZ. 2021-03-11T21:37:37.62 0.3 undecidable manual S 215 15.9729 131 0.29 71
IV.VVLD.HHZ. 2021-03-11T21:37:37.43 0.6 undecidable manual S 283 16.7721 130 -0.06 49
IV.PTQR.HHZ. 2021-03-11T21:37:37.52 0.1 undecidable manual P 301 40.4262 104 0.02 95
IV.RNI2.HHZ. 2021-03-11T21:37:36.53 0.3 undecidable manual P 118 31.0467 110 0.41 67
IV.LPEL.HHZ. 2021-03-11T21:37:36.87 0.1 undecidable manual P 52 37.9287 106 -0.26 91
IV.LRP.EHZ. 2021-03-11T21:37:35.62 0.3 undecidable manual P 223 28.5492 113 -0.15 71
IT.OPI.HGE. 2021-03-11T21:37:35.75 0.3 undecidable manual S 174 6.6933 157 -0.1 74
IV.CERA.HHZ. 2021-03-11T21:37:35.98 0.3 undecidable manual P 148 31.0467 110 -0.14 71
IT.SULA.HNE. 2021-03-11T21:37:35.52 0.1 undecidable manual P 17 27.4503 114 -0.09 96
IT.SULC.HNZ. 2021-03-11T21:37:35.26 0.1 undecidable manual P 16 26.751 114 -0.25 93
IT.SULP.HGZ. 2021-03-11T21:37:35.62 0.3 undecidable manual P 18 28.9488 112 -0.21 70
IV.VVLD.HHZ. 2021-03-11T21:37:34.13 0.6 undecidable manual P 283 16.7721 130 -0.07 49
IV.INTR.HHZ. 2021-03-11T21:37:34.61 0.3 undecidable manual P 19 20.6682 123 -0.07 73
IV.POFI.HHZ. 2021-03-11T21:37:34.18 0.3 undecidable manual P 215 15.9729 131 0.07 74
IT.OPI.HGE. 2021-03-11T21:37:33.33 0.1 undecidable manual P 174 6.6933 157 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHE. ML:1.4 0.000156 0.66 AML other m 2021-03-11T21:37:37.56
IV.VVLD.HHN. ML:1.4 0.000169 0.6 AML other m 2021-03-11T21:37:37.59
IV.POFI.HHE. ML:1.4 0.00016849999999999998 1.22 AML other m 2021-03-11T21:37:38.80
IV.POFI.HHN. ML:1.2 0.00011344999999999999 0.44 AML other m 2021-03-11T21:37:38.82
IV.INTR.HHE. ML:1.7 0.00029949999999999996 1.42 AML other m 2021-03-11T21:37:39.88
IV.INTR.HHN. ML:1.7 0.00026000000000000003 0.2 AML other m 2021-03-11T21:37:39.27
IV.LRP.EHN. ML:0.8 0.000028049999999999997 0.38 AML other m 2021-03-11T21:37:40.96
IV.LRP.EHE. ML:1.3 0.00009465000000000001 0.5 AML other m 2021-03-11T21:37:40.72
IV.RNI2.HHN. ML:1.4 0.00011665 0.16 AML other m 2021-03-11T21:37:43.78
IV.RNI2.HHE. ML:1.5 0.00013550000000000001 1.02 AML other m 2021-03-11T21:37:43.27
IV.LPEL.HHN. ML:1.6 0.0001295 1.36 AML other m 2021-03-11T21:37:44.26
IV.LPEL.HHE. ML:1.6 0.00011899999999999999 1.06 AML other m 2021-03-11T21:37:45.20
IV.MIDA.HHE. ML:1.3 0.00006654999999999999 1.02 AML other m 2021-03-11T21:37:45.81
IV.MIDA.HHN. ML:1.2 0.00005155 1.24 AML other m 2021-03-11T21:37:45.35
IV.FAGN.HHN. ML:1.5 0.00007125000000000001 0.7 AML other m 2021-03-11T21:37:48.63
IV.FAGN.HHE. ML:1.4 0.00006665000000000001 0.3 AML other m 2021-03-11T21:37:51.14
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