Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 22-03-2017 and time 09:36:06 (Italy) in region 7 km W Pietralunga (PG)

A magnitude ML 1.1 earthquake occured in region: 7 km W Pietralunga (PG), on

  • 22-03-2017 08:36:06 (UTC)
  • 22-03-2017 09:36:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4580, 12.3520 at 10 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 20 3531 78278
Piobbico PU 20 2029 80307
Monterchi AR 20 1757 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)
100 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 1.1 2017-03-22
08:36:06		 43.458 12.3522 10 2018-01-10
09:55:04		 Bollettino Sismico Italiano INGV 50020921
Reviewed
Rev100 		ML 1.1 2017-03-22
08:36:06		 43.4582 12.3528 10 2017-03-22
08:40:34		 Sala Sismica INGV-Roma 42775341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-22 08:36:06 ± 0.06
Latitude 43.4580 ± 0.0027
Longitude 12.3522 ± 0.0050
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 50020921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 305
Semi-minor axis of confidence ellipse (meter) 285
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 307
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
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) 0.03687
Epicentral distance of station farthest from the epicenter (degree) 0.30847
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.5
Num. used stations 8
Type of magnitude ML
Reference to an origin 42775341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-22 08:40:34

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 50020921
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-09-12 14:59:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2017-03-22T08:36:18.03 0.6 undecidable manual S 245 34.2435 50 -0.17 47
IV.FRON.EHZ. 2017-03-22T08:36:17.12 0.6 undecidable manual S 77 30.747 50 -0.16 47
IV.MURB.HHZ. 2017-03-22T08:36:16.14 0.6 undecidable manual S 147 25.752 111 0.27 47
IV.PARC.HHZ. 2017-03-22T08:36:15.20 0.6 undecidable manual S 337 23.0547 113 0.2 48
IV.PIEI.HHZ. 2017-03-22T08:36:13.57 0.6 undecidable manual S 60 17.0718 120 0.43 46
IV.CAFI.HHZ. 2017-03-22T08:36:13.34 0.3 undecidable manual P 245 34.2435 50 0.17 70
IV.ATMI.HHZ. 2017-03-22T08:36:12.68 0.6 undecidable manual S 206 15.2736 123 0.05 50
IV.FRON.EHZ. 2017-03-22T08:36:12.42 0.3 undecidable manual P 77 30.747 50 -0.22 70
IV.ATTE.HHZ. 2017-03-22T08:36:12.35 0.6 undecidable manual P 180 28.8489 50 0 49
IV.ATVO.HHZ. 2017-03-22T08:36:11.16 0.6 undecidable manual S 152 9.4794 136 0.11 50
IV.PARC.HHZ. 2017-03-22T08:36:11.47 0.6 undecidable manual P 337 23.0547 113 0.14 48
IV.MURB.HHZ. 2017-03-22T08:36:11.77 0.3 undecidable manual P 147 25.752 111 -0.06 73
IV.APEC.HNN. 2017-03-22T08:36:11.96 0.6 undecidable manual S 26 12.3765 128 0.16 49
IV.BADI.EHZ. 2017-03-22T08:36:11.03 0.6 undecidable manual S 303 10.3785 133 -0.25 48
IV.PIEI.HHZ. 2017-03-22T08:36:10.26 0.1 undecidable manual P 60 17.0718 120 0 100
IV.ATMI.HHZ. 2017-03-22T08:36:10.15 0.3 undecidable manual P 206 15.2736 123 0.19 72
IV.BADI.EHZ. 2017-03-22T08:36:09.12 0.1 undecidable manual P 303 10.3785 133 -0.06 100
IV.ATVO.HHZ. 2017-03-22T08:36:09.14 0.1 undecidable manual P 152 9.4794 136 0.09 100
IV.ATPI.EHZ. 2017-03-22T08:36:09.30 0.6 undecidable manual S 101 4.0959 157 -0.7 42
IV.APEC.HNN. 2017-03-22T08:36:09.56 0.3 undecidable manual P 26 12.3765 128 0.08 74
IV.ATPI.EHZ. 2017-03-22T08:36:08.22 0.1 undecidable manual P 101 4.0959 157 -0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATMI.HHE. ML:1.0 0.00010145000000000001 1.2 AML other m 2017-03-22T08:36:17.30
IV.ATMI.HHN. ML:1.2 0.000133 1.66 AML other m 2017-03-22T08:36:18.08
IV.ATPI.EHN. ML:1.4 0.00042449999999999996 0.26 AML other m 2017-03-22T08:36:09.36
IV.ATPI.EHE. ML:1.4 0.0004435 0.3 AML other m 2017-03-22T08:36:09.37
IV.ATVO.HHE. ML:1.2 0.00023199999999999997 0.44 AML other m 2017-03-22T08:36:11.79
IV.ATVO.HHN. ML:1.0 0.000149 0.1 AML other m 2017-03-22T08:36:11.85
IV.CAFI.HHE. ML:0.8 0.00002465 0.12 AML other m 2017-03-22T08:36:18.32
IV.CAFI.HHN. ML:0.9 0.000027649999999999998 0.32 AML other m 2017-03-22T08:36:18.42
IV.MURB.HHE. ML:1.1 0.00007655 1.8 AML other m 2017-03-22T08:36:18.02
IV.MURB.HHN. ML:1.2 0.00008879999999999999 0.16 AML other m 2017-03-22T08:36:17.40
IV.PARC.HHE. ML:0.7 0.0000363 0.56 AML other m 2017-03-22T08:36:15.85
IV.PARC.HHN. ML:0.8 0.0000375 1.66 AML other m 2017-03-22T08:36:16.12
IV.PIEI.HHN. ML:1.2 0.0001229 0.3 AML other m 2017-03-22T08:36:13.85
IV.PIEI.HHE. ML:1.2 0.00013700000000000002 0.26 AML other m 2017-03-22T08:36:13.87
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