Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 01-09-2021 and time 03:05:51 (Italy) in region 2 km S Bisegna (AQ)

A magnitude ML 1.2 earthquake occured in region: 2 km S Bisegna (AQ), on

  • 01-09-2021 01:05:51 (UTC)
  • 01-09-2021 03:05:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9060, 13.7600 at 15 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
Bisegna AQ 2 223 223
Lecce nei Marsi AQ 7 1702 1925
Villalago AQ 7 568 2493
Gioia dei Marsi AQ 8 1989 4482
Scanno AQ 10 1847 6329
Anversa degli Abruzzi AQ 11 341 6670
Ortona dei Marsi AQ 11 542 7212
Pescasseroli AQ 11 2203 9415
Ortucchio AQ 11 1860 11275
Villavallelonga AQ 12 919 12194
Cocullo AQ 14 230 12424
Collelongo AQ 15 1233 13657
Opi AQ 15 420 14077
Bugnara AQ 15 1125 15202
Pescina AQ 16 4133 19335
San Benedetto dei Marsi AQ 16 3909 23244
Introdacqua AQ 16 2126 25370
Prezza AQ 18 945 26315
Rocca Pia AQ 18 178 26493
Pettorano sul Gizio AQ 18 1376 27869
Trasacco AQ 19 6246 34115
Pescosolido FR 19 1555 35670
Goriano Sicoli AQ 20 569 36239
Campoli Appennino FR 20 1725 37964
Balsorano AQ 20 3569 41533
Villetta Barrea AQ 20 653 42186

Municipalities with at least 50000 inhabitants

An earthquake occurred to
58 Km SE of L'Aquila (69753 inhabitants)
60 Km SW of Chieti (51815 inhabitants)
73 Km SW of Pescara (121014 inhabitants)
75 Km SW of Montesilvano (53738 inhabitants)
80 Km E of Tivoli (56533 inhabitants)
84 Km S of Teramo (54892 inhabitants)
85 Km E of Velletri (53303 inhabitants)
86 Km E of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Latina (125985 inhabitants)
98 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
Bulletin
Rev1000 		ML 1.2 2021-09-01
01:05:51		 41.9058 13.7603 15 2022-03-30
13:04:41		 Bollettino Sismico Italiano INGV 102049621
Reviewed
Rev100 		ML 1.1 2021-09-01
01:05:52		 41.9068 13.7612 14 2021-09-01
01:12:20		 Sala Sismica INGV-Roma 94892371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-01 01:05:51 ± 0.06
Latitude 41.9058 ± 0.0018
Longitude 13.7603 ± 0.0036
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 102049621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 289
Semi-minor axis of confidence ellipse (meter) 132
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) 290.0
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 27
Number of defining phases 27
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) 0.10792
Epicentral distance of station farthest from the epicenter (degree) 0.51261
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 102049621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-16 23:37:23

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 94892371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-01 01:12:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MIDA.HHZ. 2021-09-01T01:06:08.04 0.6 undecidable manual S 125 50.2164 96 0.17 46
IV.FAGN.HHZ. 2021-09-01T01:06:05.48 0.3 undecidable manual S 340 42.5241 98 -0.33 67
IV.CERA.HHZ. 2021-09-01T01:06:05.24 0.3 undecidable manual S 148 40.3263 98 0.01 72
IV.T0110.HHZ. 2021-09-01T01:06:04.17 0.3 undecidable manual S 2 35.9418 100 0.09 73
IV.LPEL.HHZ. 2021-09-01T01:06:04.70 0.6 undecidable manual S 66 38.2284 99 0.02 49
IV.LRP.EHZ. 2021-09-01T01:06:03.17 0.6 undecidable manual S 207 32.1456 102 0.09 48
IV.PTQR.HHZ. 2021-09-01T01:06:03.16 0.6 undecidable manual S 294 32.3454 101 0.02 49
IV.GIUL.HHZ. 2021-09-01T01:06:02.01 0.1 undecidable manual P 228 56.8986 95 -0.15 91
IV.MIDA.HHZ. 2021-09-01T01:06:01.11 0.3 undecidable manual P 125 50.2164 96 -0.03 71
IT.SULP.HGE. 2021-09-01T01:06:01.08 0.6 undecidable manual S 35 24.1536 108 0.05 50
IV.POFI.HHZ. 2021-09-01T01:06:00.27 0.3 undecidable manual S 191 21.2676 112 -0.03 75
IT.SULA.HNN. 2021-09-01T01:06:00.89 0.3 undecidable manual S 35 22.6551 110 0.26 71
IV.INTR.HHZ. 2021-09-01T01:05:59.05 0.1 undecidable manual S 45 16.6722 120 -0.15 49
IV.LPEL.HHZ. 2021-09-01T01:05:59.07 0.1 undecidable manual P 66 38.2284 99 -0.23 93
IV.FAGN.HHZ. 2021-09-01T01:05:59.67 0.3 undecidable manual P 340 42.5241 98 -0.28 68
IV.CERA.HHZ. 2021-09-01T01:05:59.53 0.3 undecidable manual P 148 40.3263 98 -0.08 72
IV.PTQR.HHZ. 2021-09-01T01:05:58.87 0.3 undecidable manual P 294 32.3454 101 0.46 67
IV.LRP.EHZ. 2021-09-01T01:05:58.37 0.1 undecidable manual P 207 32.1456 102 0 99
IV.VVLD.HHZ. 2021-09-01T01:05:58.01 0.3 undecidable manual S 251 11.9769 132 -0.18 74
IV.T0110.HHZ. 2021-09-01T01:05:58.99 0.3 undecidable manual P 2 35.9418 100 0.04 73
IT.OPI.HGE. 2021-09-01T01:05:58.68 0.6 undecidable manual S 158 15.4734 123 -0.24 49
IT.SULA.HNN. 2021-09-01T01:05:57.03 0.1 undecidable manual P 35 22.6551 110 0.07 99
IT.SULP.HGE. 2021-09-01T01:05:57.20 0.1 undecidable manual P 35 24.1536 108 0.01 100
IT.OPI.HGE. 2021-09-01T01:05:56.08 0.1 undecidable manual P 158 15.4734 123 0.11 99
IV.INTR.HHZ. 2021-09-01T01:05:56.22 0.1 positive manual P 45 16.6722 120 0.09 100
IV.POFI.HHZ. 2021-09-01T01:05:56.85 0.1 undecidable manual P 191 21.2676 112 0.08 99
IV.VVLD.HHZ. 2021-09-01T01:05:55.65 0.1 undecidable manual P 251 11.9769 132 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHE. ML:1.5 0.00028700000000000004 0.44 AML other m 2021-09-01T01:05:58.40
IV.VVLD.HHN. ML:1.6 0.0003095 0.28 AML other m 2021-09-01T01:05:58.19
IV.INTR.HHE. ML:1.8 0.000519 0.46 AML other m 2021-09-01T01:05:59.15
IV.INTR.HHN. ML:1.8 0.0004945 0.18 AML other m 2021-09-01T01:06:00.10
IV.POFI.HHE. ML:1.2 0.0000891 0.74 AML other m 2021-09-01T01:06:00.90
IV.POFI.HHN. ML:1.1 0.00007199999999999999 0.94 AML other m 2021-09-01T01:06:01.25
IV.LRP.EHE. ML:1.3 0.00008979999999999999 0.44 AML other m 2021-09-01T01:06:03.50
IV.LRP.EHN. ML:0.9 0.0000304 0.12 AML other m 2021-09-01T01:06:03.58
IV.PTQR.HHN. ML:0.9 0.0000286 0.72 AML other m 2021-09-01T01:06:04.96
IV.PTQR.HHE. ML:1.0 0.000040300000000000004 0.58 AML other m 2021-09-01T01:06:04.69
IV.T0110.HHE. ML:1.4 0.00009315000000000001 0.38 AML other m 2021-09-01T01:06:05.29
IV.T0110.HHN. ML:1.4 0.0000975 0.6 AML other m 2021-09-01T01:06:05.23
IV.LPEL.HHN. ML:1.2 0.00006175 1.02 AML other m 2021-09-01T01:06:06.98
IV.CERA.HHN. ML:0.9 0.0000249 0.84 AML other m 2021-09-01T01:06:06.27
IV.LPEL.HHE. ML:1.3 0.00007569999999999998 1.48 AML other m 2021-09-01T01:06:06.14
IV.CERA.HHE. ML:0.8 0.000018825 1.58 AML other m 2021-09-01T01:06:06.09
IV.FAGN.HHN. ML:1.3 0.0000663 0.5 AML other m 2021-09-01T01:06:08.98
IV.FAGN.HHE. ML:1.5 0.000088 0.42 AML other m 2021-09-01T01:06:09.71
IV.GIUL.HHN. ML:0.8 0.000016550000000000002 1.54 AML other m 2021-09-01T01:06:10.08
IV.GIUL.HHE. ML:0.8 0.0000132 0.42 AML other m 2021-09-01T01:06:13.17
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