Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 23-02-2020 and time 12:47:18 (Italy) in region 5 km SE Pietralunga (PG)

A magnitude ML 1.0 earthquake occured in region: 5 km SE Pietralunga (PG), on

  • 23-02-2020 11:47:18 (UTC)
  • 23-02-2020 12:47:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4120, 12.4740 at 6 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
Pietralunga PG 5 2111 2111
Gubbio PG 11 32216 34327
Montone PG 13 1680 36007
Cantiano PU 14 2245 38252
Scheggia e Pascelupo PG 16 1393 39645
Umbertide PG 17 16681 56326
Apecchio PU 17 1882 58208
Città di Castello PG 20 39913 98121
Piobbico PU 20 2029 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
48 Km E of Arezzo (99543 inhabitants)
54 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
73 Km S of Rimini (147750 inhabitants)
83 Km S of Cesena (96758 inhabitants)
87 Km W of Ancona (100861 inhabitants)
93 Km E of Siena (53903 inhabitants)
96 Km N of Terni (111501 inhabitants)
97 Km SE of Forlì (117913 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 1.0 2020-02-23
11:47:18		 43.4122 12.4738 6 2020-02-23
11:59:01		 Sala Sismica INGV-Roma 76750581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-23 11:47:18 ± 0.08
Latitude 43.4122 ± 0.0036
Longitude 12.4738 ± 0.0062
Depth (km) 6 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76750581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 560
Semi-minor axis of confidence ellipse (meter) 370
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 14
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29138
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76750581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-23 11:59:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.BHB.HHZ. 2020-02-23T11:49:03.97 3.0 undecidable manual Sn 2.42 0
IV.MILN.HHZ. 2020-02-23T11:48:52.76 3.0 undecidable manual Sg 13.26 0
IV.MIDA.HHZ. 2020-02-23T11:48:28.72 3.0 undecidable manual Sg 12.18 0
IV.CRAC.EHZ. 2020-02-23T11:48:27.21 3.0 positive manual Pg 9.28 0
IV.SPS2.HHZ. 2020-02-23T11:48:25.83 3.0 negative manual Pn -3.2 0
SL.KOGS.BHZ. 2020-02-23T11:48:23.47 3.0 negative manual Pn 7.74 0
GU.GRAM.HHZ. 2020-02-23T11:48:22.02 3.0 undecidable manual Sg 8.51 0
IV.MGR.HHZ. 2020-02-23T11:48:10.92 3.0 undecidable manual Pn -3.82 0
IV.VIVA.HHZ. 2020-02-23T11:48:03.55 3.0 undecidable manual Sn -0.1 0
IV.TOLF.HHZ. 2020-02-23T11:47:56.55 3.0 undecidable manual Sn -0.28 0
IV.MNTV.HNZ. 2020-02-23T11:47:53.60 3.0 positive manual Pg 4.24 0
IV.RNI2.HHZ. 2020-02-23T11:47:51.27 3.0 negative manual Pn 2.48 0
IV.LAV9.HNZ. 2020-02-23T11:47:48.46 3.0 positive manual Pg 4.71 0
IT.FIE.HGZ. 2020-02-23T11:47:45.37 3.0 undecidable manual Sg -1.17 0
IV.VIVA.HHZ. 2020-02-23T11:47:43.21 3.0 positive manual Pn 0.37 0
IV.LPEL.HHZ. 2020-02-23T11:47:43.02 3.0 undecidable manual Pn -2.29 0
IV.MDAR.HNZ. 2020-02-23T11:47:38.61 3.0 undecidable manual S 2.78 0
IV.PARC.HHZ. 2020-02-23T11:47:29.97 0.3 undecidable manual S 324 32.3454 100 0.07 73
IV.ATCC.EHZ. 2020-02-23T11:47:28.92 0.3 undecidable manual S 152 28.5492 102 0.32 70
IV.FRON.EHZ. 2020-02-23T11:47:26.77 0.3 undecidable manual S 60 23.4543 104 -0.1 74
IV.PARC.HHZ. 2020-02-23T11:47:25.41 0.1 undecidable manual P 324 32.3454 100 0.34 92
IV.APEC.HHZ. 2020-02-23T11:47:25.11 0.3 undecidable manual S 345 16.7721 110 0.44 70
IV.MURB.HHZ. 2020-02-23T11:47:25.05 0.6 undecidable manual S 166 17.0718 109 0.3 48
IV.ATCC.EHZ. 2020-02-23T11:47:24.10 0.6 positive manual P 152 28.5492 102 -0.22 48
IV.APEC.HHZ. 2020-02-23T11:47:22.09 0.3 positive manual P 345 16.7721 110 0.03 76
IV.MURB.HHZ. 2020-02-23T11:47:22.21 0.1 positive manual P 166 17.0718 109 0.11 99
IV.FRON.EHZ. 2020-02-23T11:47:22.95 0.1 undecidable manual P 60 23.4543 104 -0.38 93
IV.ATPI.EHZ. 2020-02-23T11:47:21.57 0.1 undecidable manual S 307 7.1928 130 -0.16 100
IV.ATVO.HHZ. 2020-02-23T11:47:21.19 0.3 undecidable manual S 238 6.3936 133 -0.32 73
IV.ATPI.EHZ. 2020-02-23T11:47:20.20 0.1 undecidable manual P 307 7.1928 130 -0.16 100
IV.ATVO.HHZ. 2020-02-23T11:47:19.96 1.0 undecidable manual P 238 6.3936 133 -0.27 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHN. ML:1.2 0.000143 0.88 AML other m 2020-02-23T11:47:25.66
IV.APEC.HHN. ML:0.9 0.00007214999999999999 0.66 AML other m 2020-02-23T11:47:25.36
IV.MURB.HHE. ML:1.2 0.0001615 0.4 AML other m 2020-02-23T11:47:26.41
IV.APEC.HHE. ML:0.8 0.00006155 0.32 AML other m 2020-02-23T11:47:26.80
IV.ATCC.EHE. ML:1.0 0.000054600000000000006 0.16 AML other m 2020-02-23T11:47:29.03
IV.ATCC.EHN. ML:0.9 0.0000431 0.7 AML other m 2020-02-23T11:47:29.92
IV.FRON.EHE. ML:0.9 0.00004910000000000001 0.48 AML other m 2020-02-23T11:47:30.44
IV.FRON.EHN. ML:1.2 0.0001038 0.42 AML other m 2020-02-23T11:47:32.88
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