Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 07-09-2021 and time 10:21:36 (Italy) in region 3 km SE Campotosto (AQ)

A magnitude ML 1.5 earthquake occured in region: 3 km SE Campotosto (AQ), on

  • 07-09-2021 08:21:36 (UTC)
  • 07-09-2021 10:21:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5320, 13.3830 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
Campotosto AQ 3 542 542
Capitignano AQ 7 665 1207
Crognaleto TE 8 1297 2504
Montereale AQ 11 2581 5085
Barete AQ 12 737 5822
Pizzoli AQ 13 4326 10148
Fano Adriano TE 13 296 10444
Amatrice RI 13 2657 13101
Pietracamela TE 14 271 13372
Cortino TE 14 656 14028
Cagnano Amiterno AQ 15 1369 15397
L'Aquila AQ 20 69753 85150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km N of L'Aquila (69753 inhabitants)
30 Km W of Teramo (54892 inhabitants)
60 Km E of Terni (111501 inhabitants)
63 Km W of Montesilvano (53738 inhabitants)
68 Km W of Chieti (51815 inhabitants)
69 Km W of Pescara (121014 inhabitants)
73 Km SE of Foligno (57155 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
80 Km NE of Guidonia Montecelio (88673 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 1.5 2021-09-07
08:21:36		 42.5322 13.3832 15 2022-03-30
13:04:11		 Bollettino Sismico Italiano INGV 96507151
Reviewed
Rev100 		ML 1.5 2021-09-07
08:21:36		 42.5308 13.3848 15 2021-09-07
08:33:51		 Sala Sismica INGV-Roma 95146001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-07 08:21:36 ± 0.06
Latitude 42.5322 ± 0.0027
Longitude 13.3832 ± 0.0037
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 96507151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 347
Semi-minor axis of confidence ellipse (meter) 70
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
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) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.57467
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 96507151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-13 16:07:01

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 95146001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-07 08:33:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2021-09-07T08:21:50.67 0.3 undecidable manual S 294 43.7229 97 0.05 71
IV.MC2.EHZ. 2021-09-07T08:21:50.78 0.6 undecidable manual S 339 44.9217 97 -0.17 46
IV.MMO1.HNZ. 2021-09-07T08:21:50.03 0.6 undecidable manual S 354 41.0256 98 0.13 47
IV.NRCA.HHZ. 2021-09-07T08:21:49.60 0.3 undecidable manual S 327 39.9267 98 -0.03 72
IV.VCEL.EHZ. 2021-09-07T08:21:49.46 0.6 undecidable manual S 112 40.4262 98 -0.3 45
IV.CSP1.EHZ. 2021-09-07T08:21:47.54 0.6 undecidable manual P 347 63.7917 94 -0.16 45
IV.MF5.EHZ. 2021-09-07T08:21:46.13 0.1 undecidable manual P 7 50.9157 96 0.4 87
IV.LNSS.HHZ. 2021-09-07T08:21:46.85 0.3 undecidable manual S 286 29.0487 103 0.08 73
IV.MTRA.EHZ. 2021-09-07T08:21:45.55 0.3 undecidable manual S 3 24.9528 106 -0.15 72
IV.T0110.HHZ. 2021-09-07T08:21:45.48 0.6 undecidable manual P 136 46.5201 96 0.42 44
IV.GAVE.EHZ. 2021-09-07T08:21:44.43 0.3 undecidable manual P 294 43.7229 97 -0.19 69
IV.MC2.EHZ. 2021-09-07T08:21:44.87 0.6 undecidable manual P 339 44.9217 97 0.05 47
IV.TERO.HHZ. 2021-09-07T08:21:44.60 0.3 undecidable manual S 61 20.6682 112 -0.02 75
IV.VCEL.EHZ. 2021-09-07T08:21:44.09 0.6 undecidable manual P 112 40.4262 98 -0.04 48
IV.MMO1.HNZ. 2021-09-07T08:21:43.92 0.6 undecidable manual P 354 41.0256 98 -0.29 45
IV.RM33.EHZ. 2021-09-07T08:21:43.03 0.1 undecidable manual S 259 13.9749 126 -0.04 100
IV.NRCA.HHZ. 2021-09-07T08:21:43.92 0.1 undecidable manual P 327 39.9267 98 -0.14 94
IV.T1299.HNE. 2021-09-07T08:21:43.29 0.3 undecidable manual S 324 13.9749 126 0.23 72
IV.GIGS.HHE. 2021-09-07T08:21:43.76 0.1 undecidable manual S 119 17.871 117 -0.17 97
IV.SMA1.EHZ. 2021-09-07T08:21:42.04 0.3 undecidable manual S 340 11.5773 133 -0.52 68
IV.LNSS.HHZ. 2021-09-07T08:21:42.39 0.1 undecidable manual P 286 29.0487 103 -0.01 98
IV.TERO.HHZ. 2021-09-07T08:21:41.17 0.1 undecidable manual P 61 20.6682 112 0.01 99
IV.MTRA.EHZ. 2021-09-07T08:21:41.67 0.1 undecidable manual P 3 24.9528 106 -0.11 97
IV.CAMP.HHE. 2021-09-07T08:21:41.47 0.3 undecidable manual S 79 2.1978 170 0.14 75
IV.T1299.HNE. 2021-09-07T08:21:40.48 0.3 undecidable manual P 324 13.9749 126 0.22 72
IV.GIGS.HHE. 2021-09-07T08:21:40.71 0.1 undecidable manual P 119 17.871 117 -0.05 99
IV.SMA1.EHZ. 2021-09-07T08:21:40.14 0.1 undecidable manual P 340 11.5773 133 0.17 98
IV.RM33.EHZ. 2021-09-07T08:21:40.33 0.1 positive manual P 259 13.9749 126 0.07 100
IV.CAMP.HHE. 2021-09-07T08:21:39.47 0.1 undecidable manual P 79 2.1978 170 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.3 0.000182 1.58 AML other m 2021-09-07T08:21:42.91
IV.RM33.EHN. ML:1.4 0.00022799999999999999 0.84 AML other m 2021-09-07T08:21:43.13
IV.RM33.EHE. ML:1.4 0.0002195 0.38 AML other m 2021-09-07T08:21:43.72
IV.SMA1.EHE. ML:1.7 0.000432 0.46 AML other m 2021-09-07T08:21:43.32
IV.TERO.HHN. ML:1.5 0.00020800000000000001 0.08 AML other m 2021-09-07T08:21:44.76
IV.TERO.HHE. ML:1.5 0.00021450000000000004 1.58 AML other m 2021-09-07T08:21:44.13
IV.MTRA.EHE. ML:1.5 0.00017199999999999998 0.54 AML other m 2021-09-07T08:21:46.00
IV.MTRA.EHN. ML:1.3 0.0001019 0.56 AML other m 2021-09-07T08:21:46.67
IV.LNSS.HHN. ML:1.7 0.000232 0.14 AML other m 2021-09-07T08:21:47.17
IV.LNSS.HHE. ML:1.8 0.0003005 0.28 AML other m 2021-09-07T08:21:47.13
IV.NRCA.HHE. ML:1.9 0.0002715 0.14 AML other m 2021-09-07T08:21:49.87
IV.NRCA.HHN. ML:1.7 0.00016649999999999998 1.58 AML other m 2021-09-07T08:21:50.84
IV.FAGN.HHE. ML:1.4 0.0001085 0.4 AML other m 2021-09-07T08:21:53.42
IV.FAGN.HHN. ML:1.2 0.0000698 1.24 AML other m 2021-09-07T08:21:55.17
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