Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 31-03-2020 and time 10:02:51 (Italy) in region 8 km E Pietralunga (PG)

A magnitude ML 1.0 earthquake occured in region: 8 km E Pietralunga (PG), on

  • 31-03-2020 08:02:51 (UTC)
  • 31-03-2020 10:02:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4360, 12.5380 at 12 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
Pietralunga PG 8 2111 2111
Cantiano PU 8 2245 4356
Gubbio PG 10 32216 36572
Scheggia e Pascelupo PG 11 1393 37965
Cagli PU 15 8731 46696
Costacciaro PG 16 1216 47912
Apecchio PU 17 1882 49794
Piobbico PU 17 2029 51823
Frontone PU 19 1300 53123
Montone PG 19 1680 54803
Serra Sant'Abbondio PU 20 1027 55830

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NE of Perugia (166134 inhabitants)
53 Km E of Arezzo (99543 inhabitants)
55 Km N of Foligno (57155 inhabitants)
60 Km SW of Fano (60888 inhabitants)
61 Km SW of Pesaro (94582 inhabitants)
70 Km S of Rimini (147750 inhabitants)
82 Km SE of Cesena (96758 inhabitants)
82 Km W of Ancona (100861 inhabitants)
96 Km SE of Forlì (117913 inhabitants)
98 Km N of Terni (111501 inhabitants)
98 Km E of Siena (53903 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 1.0 2020-03-31
08:02:51		 43.4362 12.5385 12 2020-07-18
21:08:32		 Bollettino Sismico Italiano INGV 78243901
Reviewed
Rev100 		ML 1.0 2020-03-31
08:02:51		 43.4323 12.5392 12 2020-03-31
08:11:22		 Sala Sismica INGV-Roma 77722171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 08:02:51 ± 0.04
Latitude 43.4362 ± 0.0018
Longitude 12.5385 ± 0.0025
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78243901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 227
Semi-minor axis of confidence ellipse (meter) 71
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 148
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 35
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 0.26170
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 12
Type of magnitude ML
Reference to an origin 78243901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-15 15:15:30

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 77722171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 08:11:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPAG.HNZ. 2020-03-31T08:03:01.46 0.3 undecidable manual S 40 27.8499 92 0.24 69
IV.FOSV.EHZ. 2020-03-31T08:03:00.18 0.6 undecidable manual S 131 23.8539 93 0.03 48
IV.ATVA.EHZ. 2020-03-31T08:03:00.78 0.3 undecidable manual S 230 26.8509 92 -0.18 70
IV.ATMI.HHZ. 2020-03-31T08:03:00.22 0.6 undecidable manual S 243 24.5532 93 -0.13 47
IV.MURB.HNZ. 2020-03-31T08:02:59.20 0.3 undecidable manual S 183 19.2696 95 0.27 70
IV.APEC.HHZ. 2020-03-31T08:02:58.32 0.3 undecidable manual S 325 16.5723 99 0.09 74
IV.ATLO.EHZ. 2020-03-31T08:02:58.23 0.3 undecidable manual S 218 17.0718 98 -0.13 72
IV.SSFR.HHZ. 2020-03-31T08:02:58.92 0.3 undecidable manual S 90 19.6692 95 -0.12 73
IV.FRON.EHZ. 2020-03-31T08:02:58.25 0.1 undecidable manual S 59 17.5713 97 -0.24 95
IV.NARO.HHZ. 2020-03-31T08:02:58.75 0.3 undecidable manual S 10 19.6692 95 -0.29 70
IV.ATMC.EHZ. 2020-03-31T08:02:57.12 0.1 undecidable manual P 273 27.8499 92 0.07 97
IV.CDCA.HNZ. 2020-03-31T08:02:57.20 0.6 undecidable manual P 276 24.6531 93 0.64 42
IV.TB02.DHZ.01 2020-03-31T08:02:57.10 0.3 undecidable manual S 235 12.6762 112 -0.12 73
IV.ATVA.EHZ. 2020-03-31T08:02:57.07 0.3 undecidable manual P 230 26.8509 92 0.18 71
IV.ATCC.EHZ. 2020-03-31T08:02:57.54 0.3 undecidable manual P 164 29.0487 92 0.32 68
IV.MPAG.HNZ. 2020-03-31T08:02:57.01 0.1 undecidable manual P 40 27.8499 92 -0.03 97
IV.ATSC.EHZ. 2020-03-31T08:02:56.89 0.3 undecidable manual S 96 11.9769 115 -0.16 74
IV.ATMI.HHZ. 2020-03-31T08:02:56.28 0.3 undecidable manual P 243 24.5532 93 -0.26 69
IV.ATVO.HHZ. 2020-03-31T08:02:56.88 0.3 undecidable manual S 241 12.1767 114 -0.22 72
IV.TB03.DHZ. 2020-03-31T08:02:56.80 0.6 undecidable manual S 250 10.9779 119 -0.02 50
IV.ATFO.HHZ. 2020-03-31T08:02:56.00 0.3 undecidable manual S 161 8.1807 133 -0.2 74
IV.FOSV.EHZ. 2020-03-31T08:02:56.49 0.3 undecidable manual P 131 23.8539 93 0.07 72
IV.TB01.DHZ.01 2020-03-31T08:02:56.45 0.3 undecidable manual S 234 10.2786 123 -0.19 72
IV.ATPC.HHZ. 2020-03-31T08:02:56.19 0.3 undecidable manual S 307 8.1807 133 -0.02 75
IV.ATPI.EHZ. 2020-03-31T08:02:56.75 0.3 undecidable manual S 278 11.0778 119 -0.09 74
IV.MURB.HNZ. 2020-03-31T08:02:55.68 0.3 undecidable manual P 183 19.2696 95 -0.04 74
IV.FRON.EHZ. 2020-03-31T08:02:55.37 0.1 undecidable manual P 59 17.5713 97 -0.09 98
IV.ATBU.EHZ. 2020-03-31T08:02:55.87 0.1 undecidable manual S 10 4.4955 153 0.27 95
IV.NARO.HHZ. 2020-03-31T08:02:55.53 0.3 undecidable manual P 10 19.6692 95 -0.25 70
IV.APEC.HHZ. 2020-03-31T08:02:55.29 0.6 undecidable manual P 325 16.5723 99 -0.02 49
IV.ATLO.EHZ. 2020-03-31T08:02:55.47 0.3 undecidable manual P 218 17.0718 98 0.08 74
IV.SSFR.HHZ. 2020-03-31T08:02:55.71 0.1 undecidable manual P 90 19.6692 95 -0.07 98
IV.ATPC.HHZ. 2020-03-31T08:02:54.25 0.1 undecidable manual P 307 8.1807 133 0.1 99
IV.ATPI.EHZ. 2020-03-31T08:02:54.62 0.1 undecidable manual P 278 11.0778 119 0.11 98
IV.PIEI.HHZ. 2020-03-31T08:02:54.48 0.1 undecidable manual P 359 11.0778 119 -0.02 100
IV.ATSC.EHZ. 2020-03-31T08:02:54.62 0.1 undecidable manual P 96 11.9769 115 -0.01 100
IV.ATBU.EHZ. 2020-03-31T08:02:54.06 0.1 undecidable manual P 10 4.4955 153 0.26 96
IV.ATVO.HHZ. 2020-03-31T08:02:54.68 0.1 undecidable manual P 241 12.1767 114 0.02 100
IV.TB03.DHZ. 2020-03-31T08:02:54.49 0.1 undecidable manual P 250 10.9779 119 -0.01 100
IV.ATFO.HHZ. 2020-03-31T08:02:54.19 0.1 undecidable manual P 161 8.1807 133 0.05 99
IV.TB02.DHZ.01 2020-03-31T08:02:54.82 0.1 undecidable manual P 235 12.6762 112 0.09 99
IV.TB01.DHZ.01 2020-03-31T08:02:54.48 0.1 undecidable manual P 234 10.2786 123 0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHN. ML:1.2 0.00021166575 0.1344 AML other m 2020-03-31T08:02:56.13
IV.ATFO.HHE. ML:1.0 0.0001178288 0.1984 AML other m 2020-03-31T08:02:56.19
IV.ATPI.HNN. ML:1.0 0.00011607581999999998 1.9104 AML other m 2020-03-31T08:02:57.01
IV.ATPI.EHN. ML:1.1 0.00013546575 0.1216 AML other m 2020-03-31T08:02:57.02
IV.ATVO.HHN. ML:1.0 0.000106474925 1.776 AML other m 2020-03-31T08:02:57.98
IV.ATPI.EHE. ML:0.9 0.00009450046499999999 0.1216 AML other m 2020-03-31T08:02:57.10
IV.ATVO.HHE. ML:0.8 0.00006370592 0.2048 AML other m 2020-03-31T08:02:57.30
IV.PIEI.HHN. ML:0.7 0.000059234303499999996 0.0768 AML other m 2020-03-31T08:02:57.44
IV.ATPI.HNE. ML:1.1 0.0001420101 0.7232 AML other m 2020-03-31T08:02:57.45
IV.PIEI.HHE. ML:0.9 0.000088657105 0.1984 AML other m 2020-03-31T08:02:57.60
IV.FRON.EHE. ML:0.9 0.0000671471 0.096 AML other m 2020-03-31T08:02:58.33
IV.FRON.EHN. ML:1.1 0.00010627098499999999 0.0576 AML other m 2020-03-31T08:02:58.73
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