Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 04-03-2017 and time 00:07:56 (Italy) in region 7 km W Pietralunga (PG)

A magnitude ML 1.2 earthquake occured in region: 7 km W Pietralunga (PG), on

  • 03-03-2017 23:07:56 (UTC)
  • 04-03-2017 00:07:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4580, 12.3500 at 9 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 7 2111 2111
Città di Castello PG 9 39913 42024
Montone PG 11 1680 43704
Apecchio PU 13 1882 45586
Monte Santa Maria Tiberina PG 15 1183 46769
Umbertide PG 17 16681 63450
San Giustino PG 17 11297 74747
Citerna PG 19 3531 78278
Monterchi AR 19 1757 80035
Piobbico PU 20 2029 82064

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Arezzo (99543 inhabitants)
39 Km N of Perugia (166134 inhabitants)
63 Km NW of Foligno (57155 inhabitants)
68 Km SW of Pesaro (94582 inhabitants)
69 Km SW of Fano (60888 inhabitants)
69 Km S of Rimini (147750 inhabitants)
76 Km S of Cesena (96758 inhabitants)
84 Km E of Siena (53903 inhabitants)
89 Km S of Forlì (117913 inhabitants)
95 Km E of Firenze (382808 inhabitants)
96 Km W of Ancona (100861 inhabitants)
99 Km SE of Faenza (58541 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 1.2 2017-03-03
23:07:56		 43.4585 12.3505 9 2018-01-10
09:55:05		 Bollettino Sismico Italiano INGV 50553631
Reviewed
Rev100 		ML 1.1 2017-03-03
23:07:56		 43.4578 12.3512 9 2017-03-03
23:15:14		 Sala Sismica INGV-Roma 41923461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-03 23:07:56 ± 0.04
Latitude 43.4585 ± 0.0027
Longitude 12.3505 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 50553631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 277
Semi-minor axis of confidence ellipse (meter) 238
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 31
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.43078
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 41923461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-03 23:15:14

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 50553631
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-09-29 13:25:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
BA.PZUN.HHZ. 2017-03-03T23:09:05.45 3.0 undecidable manual Sn 0.1 0
IV.SRES.HHZ. 2017-03-03T23:08:10.19 3.0 undecidable manual S 2.13 0
IV.ATCC.EHZ. 2017-03-03T23:08:10.00 0.3 undecidable manual S 142 38.2284 50 0.44 65
IV.CRE.HHZ. 2017-03-03T23:08:08.88 0.3 undecidable manual S 299 36.6411 50 -0.25 69
IV.CAFI.HHZ. 2017-03-03T23:08:08.30 0.3 undecidable manual S 245 34.1436 50 -0.15 70
IV.FRON.EHZ. 2017-03-03T23:08:07.35 0.3 undecidable manual S 78 30.9468 50 -0.24 69
IV.PE3.EHZ. 2017-03-03T23:08:07.13 0.3 undecidable manual S 24 28.8489 108 0.11 71
IV.PARC.HHZ. 2017-03-03T23:08:05.17 0.3 undecidable manual S 337 22.9548 112 0.08 73
IV.NARO.HHZ. 2017-03-03T23:08:05.51 0.3 undecidable manual S 48 25.0527 110 -0.27 69
IV.ARVD.HHZ. 2017-03-03T23:08:05.51 0.3 undecidable manual P 85 47.8188 50 0 70
IV.ATFO.HHZ. 2017-03-03T23:08:04.51 0.3 undecidable manual S 120 20.5683 115 0.18 71
IV.FSSB.HHZ. 2017-03-03T23:08:04.75 0.3 undecidable manual P 53 43.0236 50 -0.02 71
IV.PIEI.HHZ. 2017-03-03T23:08:03.48 0.3 undecidable manual S 60 17.1717 119 0.2 71
IV.ATCC.EHZ. 2017-03-03T23:08:03.96 0.3 undecidable manual P 142 38.2284 50 -0.08 71
IV.MPAG.EHZ. 2017-03-03T23:08:03.84 0.3 undecidable manual P 60 37.9287 50 -0.14 70
IV.CRE.HHZ. 2017-03-03T23:08:03.82 0.3 undecidable manual P 299 36.6411 50 0.03 71
IV.CAFI.HHZ. 2017-03-03T23:08:03.31 0.3 undecidable manual P 245 34.1436 50 -0.09 71
IV.FRON.EHZ. 2017-03-03T23:08:02.67 0.1 undecidable manual P 78 30.9468 50 -0.23 93
IV.PE3.EHZ. 2017-03-03T23:08:02.91 0.3 undecidable manual P 24 28.8489 108 0.33 68
IV.APEC.HHZ. 2017-03-03T23:08:01.95 0.3 undecidable manual S 27 12.3765 127 0.06 74
IV.NARO.HHZ. 2017-03-03T23:08:01.76 0.3 undecidable manual P 48 25.0527 110 -0.1 72
IV.ATVO.HHZ. 2017-03-03T23:08:01.05 0.1 undecidable manual S 152 9.5793 134 -0.1 98
IV.ATFO.HHZ. 2017-03-03T23:08:01.08 0.1 undecidable manual P 120 20.5683 115 0.06 97
IV.BADI.EHZ. 2017-03-03T23:08:01.33 0.1 undecidable manual S 304 10.2786 132 0.01 100
IV.PARC.HHZ. 2017-03-03T23:08:01.52 0.3 undecidable manual P 337 22.9548 112 0.06 73
IV.PIEI.HHZ. 2017-03-03T23:08:00.55 0.1 undecidable manual P 60 17.1717 119 0.14 96
IV.ATMI.HHZ. 2017-03-03T23:08:00.19 0.3 undecidable manual P 206 15.2736 121 0.09 73
IV.ATVO.HHZ. 2017-03-03T23:07:59.36 0.3 negative manual P 152 9.5793 134 0.17 73
IV.BADI.EHZ. 2017-03-03T23:07:59.47 0.1 negative manual P 304 10.2786 132 0.19 97
IV.ATPI.EHZ. 2017-03-03T23:07:59.61 0.1 undecidable manual S 102 4.2957 156 -0.46 91
IV.APEC.HHZ. 2017-03-03T23:07:59.81 0.3 undecidable manual P 27 12.3765 127 0.2 72
IV.ATPI.EHZ. 2017-03-03T23:07:58.50 0.1 undecidable manual P 102 4.2957 156 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:1.4 0.0003145 1.06 AML other m 2017-03-03T23:08:02.56
IV.ATVO.HHN. ML:1.2 0.0001975 1.14 AML other m 2017-03-03T23:08:02.35
IV.PIEI.HHN. ML:1.4 0.0002045 0.36 AML other m 2017-03-03T23:08:04.16
IV.PIEI.HHE. ML:1.5 0.0002945 0.16 AML other m 2017-03-03T23:08:04.11
IV.ATFO.HHN. ML:1.4 0.00017749999999999998 1.66 AML other m 2017-03-03T23:08:04.14
IV.ATFO.HHE. ML:1.3 0.000133 0.5 AML other m 2017-03-03T23:08:05.09
IV.PARC.HHE. ML:1.1 0.0000789 0.48 AML other m 2017-03-03T23:08:05.64
IV.PARC.HHN. ML:1.0 0.00007185 1.02 AML other m 2017-03-03T23:08:06.10
IV.NARO.HHE. ML:1.1 0.00007769999999999999 1.34 AML other m 2017-03-03T23:08:06.85
IV.NARO.HHN. ML:1.2 0.00008474999999999999 0.62 AML other m 2017-03-03T23:08:07.32
IV.FRON.EHE. ML:0.8 0.0000318 0.28 AML other m 2017-03-03T23:08:07.98
IV.FRON.EHN. ML:1.2 0.0000759 0.1 AML other m 2017-03-03T23:08:09.06
IV.ATCC.EHE. ML:1.1 0.0000523 0.7 AML other m 2017-03-03T23:08:10.51
IV.ATMI.HHN. ML:1.0 0.00009415 1.56 AML other m 2017-03-03T23:08:10.95
IV.ATCC.EHN. ML:1.0 0.00003974999999999999 1.26 AML other m 2017-03-03T23:08:11.64
IV.ATMI.HHE. ML:1.1 0.000128 1.54 AML other m 2017-03-03T23:08:11.92
IV.FSSB.HHE. ML:1.4 0.0000765 1.48 AML other m 2017-03-03T23:08:11.84
IV.FSSB.HHN. ML:1.4 0.00007145 1 AML other m 2017-03-03T23:08:12.68
IV.ARVD.HHE. ML:0.9 0.000022 0.1 AML other m 2017-03-03T23:08:13.27
IV.ARVD.HHN. ML:0.9 0.000017500000000000002 0.46 AML other m 2017-03-03T23:08:15.31
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