Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 29-02-2020 and time 08:02:49 (Italy) in region 4 km W Campotosto (AQ)

A magnitude ML 1.1 earthquake occured in region: 4 km W Campotosto (AQ), on

  • 29-02-2020 07:02:49 (UTC)
  • 29-02-2020 08:02:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.57, 13.32 at 21 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 4 542 542
Capitignano AQ 6 665 1207
Amatrice RI 7 2657 3864
Montereale AQ 8 2581 6445
Crognaleto TE 13 1297 7742
Barete AQ 14 737 8479
Cittareale RI 14 482 8961
Accumoli RI 15 667 9628
Cagnano Amiterno AQ 15 1369 10997
Pizzoli AQ 15 4326 15323
Cortino TE 16 656 15979
Borbona RI 17 617 16596
Fano Adriano TE 18 296 16892
Posta RI 19 694 17586
Pietracamela TE 20 271 17857

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
66 Km SE of Foligno (57155 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
74 Km W of Chieti (51815 inhabitants)
74 Km W of Pescara (121014 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km SE of Perugia (166134 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 1.1 2020-02-29
07:02:49		 42.57 13.32 21 2020-07-18
21:08:27		 Bollettino Sismico Italiano INGV 77503371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-29 07:02:49 ± 0.2
Latitude 42.57 ± 0.01
Longitude 13.32 ± 0.01
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77503371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 980
Semi-minor axis of confidence ellipse (meter) 43
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 15
Circular confidence region, given by single value of horizontal uncertainty (meter) 980
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.30127
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77503371
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-23 14:26:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-02-29T07:03:01.29 0.1 undecidable manual S 330 0.3013 113 0.09 96
IV.TERO.HHZ. 2020-02-29T07:02:59.10 0.3 undecidable manual S 77 0.2122 124 0.21 71
IV.LNSS.HHZ. 2020-02-29T07:02:58.40 0.3 undecidable manual S 278 0.2095 124 -0.43 67
IV.GIGS.HHZ. 2020-02-29T07:02:58.90 0.1 undecidable manual S 123 0.2203 123 -0.18 95
IV.NRCA.HHZ. 2020-02-29T07:02:56.15 0.1 negative manual P 330 0.3013 113 -0.01 96
IV.RM33.EHZ. 2020-02-29T07:02:56.83 0.1 undecidable manual S 231 0.1025 147 0.25 95
IV.CAMP.HHE. 2020-02-29T07:02:55.83 0.1 undecidable manual S 121 0.0737 155 -0.34 94
IV.SMA1.EHZ. 2020-02-29T07:02:55.90 0.1 undecidable manual S 9 0.0576 161 -0.08 98
IV.TERO.HHZ. 2020-02-29T07:02:55.02 0.1 undecidable manual P 77 0.2122 124 0.2 94
IV.RM33.EHZ. 2020-02-29T07:02:54.19 0.1 positive manual P 231 0.1025 147 0.7 83
IV.LNSS.HHZ. 2020-02-29T07:02:54.47 0.1 undecidable manual P 278 0.2095 124 -0.31 92
IV.GIGS.HHZ. 2020-02-29T07:02:54.87 0.1 undecidable manual P 123 0.2203 123 -0.06 97
IV.CAMP.HHE. 2020-02-29T07:02:53.20 0.1 negative manual P 121 0.0737 155 -0.05 100
IV.SMA1.EHZ. 2020-02-29T07:02:53.21 0.1 negative manual P 9 0.0576 161 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.5 0.000209 0.18 AML other m 2020-02-29T07:02:57.15
IV.RM33.EHN. ML:1.2 0.00011275 1.48 AML other m 2020-02-29T07:02:57.17
IV.TERO.HHN. ML:1 4.905E-5 0.5 AML other m 2020-02-29T07:02:59.60
IV.TERO.HHE. ML:0.9 3.335E-5 0.42 AML other m 2020-02-29T07:03:00.60
IV.NRCA.HHE. ML:1 4.185E-5 0.16 AML other m 2020-02-29T07:03:01.63
IV.NRCA.HHN. ML:1 4.21E-5 0.8 AML other m 2020-02-29T07:03:02.51
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download