Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 25-03-2014 and time 05:02:51 (UTC) in region 6 km NW Pietralunga (PG)

A magnitude ML 1.8 earthquake occured in region: 6 km NW Pietralunga (PG), on

  • 25-03-2014 05:02:51 (UTC)
  • 25-03-2014 06:02:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4870, 12.3890 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 6 2111 2111
Apecchio PU 8 1882 3993
Città di Castello PG 13 39913 43906
Montone PG 15 1680 45586
Piobbico PU 15 2029 47615
San Giustino PG 18 11297 58912
Mercatello sul Metauro PU 18 1378 60290
Monte Santa Maria Tiberina PG 19 1183 61473
Cantiano PU 19 2245 63718
Sant'Angelo in Vado PU 20 4133 67851

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Arezzo (99543 inhabitants)
42 Km N of Perugia (166134 inhabitants)
63 Km SW of Pesaro (94582 inhabitants)
64 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km S of Rimini (147750 inhabitants)
73 Km S of Cesena (96758 inhabitants)
87 Km SE of Forlì (117913 inhabitants)
87 Km E of Siena (53903 inhabitants)
92 Km W of Ancona (100861 inhabitants)
96 Km E of Firenze (382808 inhabitants)
98 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 1.8 2014-03-25
05:02:51		 43.4868 12.3892 9 2015-09-21
09:35:11		 Bollettino Sismico Italiano INGV 17322341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-03-25 05:02:51 ± 0.1
Latitude 43.4868 ± 0.0036
Longitude 12.3892 ± 0.0062
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 17322341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 391
Semi-minor axis of confidence ellipse (meter) 382
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.28958
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 1
Type of magnitude ML
Reference to an origin 17322341
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-03-02 00:39:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2014-03-25T05:03:02.75 0.6 undecidable manual S 100 32.1456 50 -0.18 47
IV.MURB.HHZ. 2014-03-25T05:03:01.63 0.6 undecidable manual S 156 27.1506 108 0.26 46
IV.PARC.HHZ. 2014-03-25T05:03:00.03 0.6 undecidable manual S 326 21.6672 113 0.44 45
IV.ATFO.HHZ. 2014-03-25T05:02:59.26 0.6 undecidable manual S 132 19.869 115 0.24 47
IV.PIEI.HHZ. 2014-03-25T05:02:57.24 0.6 undecidable manual S 65 12.876 125 0.32 47
IV.MURB.HHZ. 2014-03-25T05:02:57.23 0.3 undecidable manual P 156 27.1506 108 0.05 72
IV.SSFR.HHZ. 2014-03-25T05:02:57.78 0.3 undecidable manual P 100 32.1456 50 -0.3 68
IV.ATMI.HHZ. 2014-03-25T05:02:56.18 0.6 undecidable manual P 210 19.5693 115 0.42 45
IV.BADI.EHZ. 2014-03-25T05:02:56.45 0.3 undecidable manual S 282 11.877 127 -0.19 72
IV.PARC.HHZ. 2014-03-25T05:02:56.06 0.3 undecidable manual P 326 21.6672 113 -0.09 73
IV.ATVO.HHZ. 2014-03-25T05:02:56.66 0.6 undecidable manual S 173 11.6772 128 0.08 49
IV.PE3.EHZ. 2014-03-25T05:02:56.97 0.6 undecidable manual P 20 24.753 110 0.24 47
IV.ATFO.HHZ. 2014-03-25T05:02:55.81 0.1 undecidable manual P 132 19.869 115 -0.01 99
IV.NARO.HHZ. 2014-03-25T05:02:55.77 0.1 undecidable manual P 48 20.6682 114 -0.19 95
IV.BADI.EHZ. 2014-03-25T05:02:54.46 0.1 positive manual P 282 11.877 127 0.01 100
IV.ATVO.HHZ. 2014-03-25T05:02:54.57 0.1 positive manual P 173 11.6772 128 0.16 97
IV.ATPI.EHZ. 2014-03-25T05:02:54.34 0.3 undecidable manual S 165 4.1958 155 -0.56 67
IV.PIEI.HHZ. 2014-03-25T05:02:54.69 0.1 undecidable manual P 65 12.876 125 0.08 98
IV.ATPI.EHZ. 2014-03-25T05:02:53.30 0.1 undecidable manual P 165 4.1958 155 -0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHN. ML:1.7 0.000411 0.16 AML other m 2014-03-25T05:03:04.62
IV.ATFO.HHE. ML:1.8 0.0004875 0.3 AML other m 2014-03-25T05:03:04.72
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