Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 29-12-2020 and time 22:20:07 (Italy) in region 1 km E Costacciaro (PG)

A magnitude ML 1.1 earthquake occured in region: 1 km E Costacciaro (PG), on

  • 29-12-2020 21:20:07 (UTC)
  • 29-12-2020 22:20:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3640, 12.7250 at 13 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Costacciaro PG 1 1216 1216
Sigillo PG 4 2404 3620
Scheggia e Pascelupo PG 6 1393 5013
Fossato di Vico PG 8 2840 7853
Gubbio PG 12 32216 40069
Sassoferrato AN 14 7285 47354
Cantiano PU 15 2245 49599
Serra Sant'Abbondio PU 15 1027 50626
Fabriano AN 15 31480 82106
Gualdo Tadino PG 16 15208 97314
Frontone PU 17 1300 98614
Genga AN 19 1797 100411

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NE of Perugia (166134 inhabitants)
45 Km N of Foligno (57155 inhabitants)
59 Km SW of Fano (60888 inhabitants)
63 Km S of Pesaro (94582 inhabitants)
69 Km E of Arezzo (99543 inhabitants)
70 Km W of Ancona (100861 inhabitants)
79 Km S of Rimini (147750 inhabitants)
89 Km N of Terni (111501 inhabitants)
94 Km SE of Cesena (96758 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
Reviewed
Rev100 		ML 1.1 2020-12-29
21:20:07		 43.3637 12.7252 13 2020-12-29
21:25:39		 Sala Sismica INGV-Roma 85858681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-29 21:20:07 ± 0.09
Latitude 43.3637 ± 0.0027
Longitude 12.7252 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85858681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 273
Semi-minor axis of confidence ellipse (meter) 253
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25001
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 7
Type of magnitude ML
Reference to an origin 85858681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-29 21:25:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRTC.HHZ. 2020-12-29T21:20:24.90 3.0 undecidable manual Sg 0.01 0
IV.ATVO.HNN. 2020-12-29T21:20:17.07 0.1 undecidable manual S 275 25.752 99 -0.23 92
IV.ATPC.HHE. 2020-12-29T21:20:17.40 0.1 undecidable manual S 301 25.1526 99 0.24 93
IV.PIEI.HHZ. 2020-12-29T21:20:16.90 0.1 undecidable manual S 321 24.4533 100 -0.06 96
IV.MURB.HHZ. 2020-12-29T21:20:15.91 0.3 undecidable manual S 235 19.6692 105 0.2 71
IV.FRON.EHZ. 2020-12-29T21:20:14.96 0.1 undecidable manual S 0 17.0718 110 -0.09 97
IV.FOSV.EHZ. 2020-12-29T21:20:13.00 0.1 undecidable manual S 159 8.1807 139 -0.08 98
IV.ATPC.HHE. 2020-12-29T21:20:13.16 0.1 undecidable manual P 301 25.1526 99 -0.1 96
IV.SSFR.HHZ. 2020-12-29T21:20:13.34 0.1 undecidable manual S 30 9.2796 135 0.06 99
IV.ATVO.HNN. 2020-12-29T21:20:13.25 0.1 undecidable manual P 275 25.752 99 -0.09 96
IV.ATPI.EHE. 2020-12-29T21:20:13.65 0.1 undecidable manual P 290 27.75 98 0 97
IV.MURB.HHZ. 2020-12-29T21:20:12.63 1.0 positive manual P 235 19.6692 105 0.21 24
IV.ATSC.EHZ. 2020-12-29T21:20:12.92 0.1 undecidable manual S 335 7.3815 143 -0.02 99
IV.PIEI.HHZ. 2020-12-29T21:20:12.99 0.1 undecidable manual P 321 24.4533 100 -0.15 95
IV.FRON.EHZ. 2020-12-29T21:20:12.06 0.1 undecidable manual P 0 17.0718 110 0.02 98
IV.SSFR.HHZ. 2020-12-29T21:20:11.18 0.1 undecidable manual P 30 9.2796 135 0.16 96
IV.ATSC.EHZ. 2020-12-29T21:20:10.90 0.1 undecidable manual P 335 7.3815 143 0.07 99
IV.FOSV.EHZ. 2020-12-29T21:20:10.91 0.1 undecidable manual P 159 8.1807 139 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:0.6 0.000050392965 0.3584 AML other m 2020-12-29T21:20:13.12
IV.FOSV.EHN. ML:0.5 0.000032873055 0.064 AML other m 2020-12-29T21:20:13.30
IV.MURB.HHE. ML:1.4 0.00016728625 0.2432 AML other m 2020-12-29T21:20:16.68
IV.MURB.HHN. ML:1.4 0.00017521915 0.2304 AML other m 2020-12-29T21:20:16.54
IV.MURB.HNE. ML:1.4 0.00017825465 0.2688 AML other m 2020-12-29T21:20:16.81
IV.PIEI.HHE. ML:1.0 0.000059381415 0.1024 AML other m 2020-12-29T21:20:17.43
IV.PIEI.HHN. ML:0.8 0.000036101935 0.128 AML other m 2020-12-29T21:20:17.08
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