Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 07-02-2020 and time 12:53:15 (Italy) in region 4 km NW Arquata del Tronto (AP)

A magnitude ML 1.1 earthquake occured in region: 4 km NW Arquata del Tronto (AP), on

  • 07-02-2020 11:53:15 (UTC)
  • 07-02-2020 12:53:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8080, 13.2710 at 11 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
Arquata del Tronto AP 4 1178 1178
Montegallo AP 7 523 1701
Montemonaco AP 11 604 2305
Acquasanta Terme AP 12 2916 5221
Accumoli RI 13 667 5888
Castelsantangelo sul Nera MC 14 281 6169
Norcia PG 15 4957 11126
Montefortino FM 16 1178 12304
Roccafluvione AP 18 2010 14314
Palmiano AP 19 196 14510
Ussita MC 19 444 14954
Amatrice RI 20 2657 17611
Venarotta AP 20 2066 19677

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
49 Km E of Foligno (57155 inhabitants)
52 Km N of L'Aquila (69753 inhabitants)
58 Km E of Terni (111501 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
79 Km E of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
92 Km S of Ancona (100861 inhabitants)
100 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 1.1 2020-02-07
11:53:15		 42.8078 13.2708 11 2020-07-18
21:08:25		 Bollettino Sismico Italiano INGV 77189851
Reviewed
Rev100 		ML 1.1 2020-02-07
11:53:15		 42.8027 13.2732 10 2020-02-07
12:06:16		 Sala Sismica INGV-Roma 76317061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-07 11:53:15 ± 0.06
Latitude 42.8078 ± 0.0036
Longitude 13.2708 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77189851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 450
Semi-minor axis of confidence ellipse (meter) 277
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.09982
Epicentral distance of station farthest from the epicenter (degree) 0.53510
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 76317061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-07 12:06:16

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 77189851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-11 11:34:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-02-07T11:53:34.76 0.6 undecidable manual S 347 59.3961 50 1.13 32
IV.CESI.HHZ. 2020-02-07T11:53:27.76 0.3 undecidable manual S 306 36.9297 50 0.14 71
IV.CSP1.EHZ. 2020-02-07T11:53:26.23 0.6 undecidable manual S 350 31.9458 50 -0.06 48
IV.LNSS.HNZ. 2020-02-07T11:53:26.32 0.6 undecidable manual S 220 29.5482 50 0.68 41
IV.TERO.HHZ. 2020-02-07T11:53:26.72 0.6 undecidable manual S 127 34.0437 50 -0.14 47
IV.FDMO.HHZ. 2020-02-07T11:53:25.30 0.1 undecidable manual S 330 29.4483 50 -0.32 92
IT.MTCL.HGZ. 2020-02-07T11:53:25.65 0.6 undecidable manual S 313 30.1476 50 -0.18 47
IV.EL6.EHZ. 2020-02-07T11:53:25.97 0.3 undecidable manual P 347 59.3961 50 0.11 68
IV.FEMA.HNE. 2020-02-07T11:53:24.44 0.6 undecidable manual S 314 24.753 50 0.05 49
IV.MF5.EHZ. 2020-02-07T11:53:24.90 0.1 undecidable manual S 38 25.1526 50 0.41 91
IV.T1299.HNN. 2020-02-07T11:53:23.19 0.6 undecidable manual S 177 19.2696 119 0.28 47
IV.CESI.HHZ. 2020-02-07T11:53:22.24 0.1 undecidable manual P 306 36.9297 50 -0.15 94
IV.SMA1.EHZ. 2020-02-07T11:53:22.80 0.3 undecidable manual S 165 20.3685 50 -0.41 69
IV.TERO.HHZ. 2020-02-07T11:53:21.90 0.1 undecidable manual P 127 34.0437 50 -0.05 96
IV.NRCA.HHZ. 2020-02-07T11:53:21.00 0.1 undecidable manual S 283 13.0758 130 -0.12 99
IV.MC2.EHZ. 2020-02-07T11:53:21.30 0.1 undecidable manual S 330 13.2756 129 0.12 98
IV.CSP1.EHZ. 2020-02-07T11:53:21.38 0.1 undecidable manual P 350 31.9458 50 -0.25 93
IV.LNSS.HNZ. 2020-02-07T11:53:21.41 0.3 undecidable manual P 220 29.5482 50 0.16 71
IT.MTCL.HGZ. 2020-02-07T11:53:21.15 0.1 undecidable manual P 313 30.1476 50 -0.21 94
IV.MF5.EHZ. 2020-02-07T11:53:20.74 0.1 undecidable manual P 38 25.1526 50 0.16 96
IV.FDMO.HHZ. 2020-02-07T11:53:20.93 0.1 undecidable manual P 330 29.4483 50 -0.31 92
IV.FEMA.HNE. 2020-02-07T11:53:20.47 0.3 undecidable manual P 314 24.753 50 -0.06 73
IV.MTRA.EHE. 2020-02-07T11:53:20.56 0.6 undecidable manual S 119 11.6772 133 -0.21 48
IV.MMO1.EHZ. 2020-02-07T11:53:20.37 0.1 undecidable manual S 24 11.0778 134 -0.25 96
IV.T1299.HNN. 2020-02-07T11:53:19.96 0.3 undecidable manual P 177 19.2696 119 0.29 71
IV.SMA1.EHZ. 2020-02-07T11:53:19.72 0.3 undecidable manual P 165 20.3685 50 -0.12 73
IV.MTRA.EHE. 2020-02-07T11:53:18.38 0.1 undecidable manual P 119 11.6772 133 -0.06 100
IV.MMO1.EHZ. 2020-02-07T11:53:18.55 0.3 undecidable manual P 24 11.0778 134 0.2 73
IV.NRCA.HHZ. 2020-02-07T11:53:18.72 0.1 undecidable manual P 283 13.0758 130 0.08 99
IV.MC2.EHZ. 2020-02-07T11:53:18.81 0.1 undecidable manual P 330 13.2756 129 0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.6 0.0004435 0.12 AML other m 2020-02-07T11:53:21.28
IV.NRCA.HHN. ML:1.9 0.000798 0.14 AML other m 2020-02-07T11:53:21.40
IV.SMA1.EHN. ML:1.0 0.0000755 0.34 AML other m 2020-02-07T11:53:23.11
IV.SMA1.EHE. ML:1.0 0.00006945 0.16 AML other m 2020-02-07T11:53:23.11
IV.CESI.HHN. ML:0.8 0.00002615 0.84 AML other m 2020-02-07T11:53:28.03
IV.CESI.HHE. ML:0.9 0.000029599999999999998 0.52 AML other m 2020-02-07T11:53:29.28
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