Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.0 on date 18-08-2013 and time 18:27:56 (UTC) in region 8 km NW Gubbio (PG)

A magnitude ML 0.0 earthquake occured in region: 8 km NW Gubbio (PG), on

  • 18-08-2013 18:27:56 (UTC)
  • 18-08-2013 20:27:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4170, 12.5390 at 8 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
Gubbio PG 8 32216 32216
Pietralunga PG 9 2111 34327
Cantiano PU 10 2245 36572
Scheggia e Pascelupo PG 11 1393 37965
Costacciaro PG 15 1216 39181
Cagli PU 17 8731 47912
Montone PG 18 1680 49592
Apecchio PU 19 1882 51474
Sigillo PG 19 2404 53878
Piobbico PU 19 2029 55907
Frontone PU 20 1300 57207

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Perugia (166134 inhabitants)
53 Km N of Foligno (57155 inhabitants)
53 Km E of Arezzo (99543 inhabitants)
61 Km SW of Fano (60888 inhabitants)
63 Km SW of Pesaro (94582 inhabitants)
72 Km S of Rimini (147750 inhabitants)
82 Km W of Ancona (100861 inhabitants)
84 Km S of Cesena (96758 inhabitants)
96 Km N of Terni (111501 inhabitants)
98 Km E of Siena (53903 inhabitants)
98 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
Bulletin
Rev1000 		ML 0.0
Md 1.1 		2013-08-18
18:27:56		 43.4168 12.5387 8 2015-01-20
11:28:30		 Bollettino Sismico Italiano INGV 5786511
Reviewed
Rev100 		ML 0.0
Md 1.1 		2013-08-18
18:27:56		 43.4168 12.5387 8 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 4287531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-08-18 18:27:56 ± 0.17
Latitude 43.4168 ± 0.0027
Longitude 12.5387 ± 0.0062
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 5786511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 470
Semi-minor axis of confidence ellipse (meter) 37
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.05576
Epicentral distance of station farthest from the epicenter (degree) 0.15378
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:0.0

Field Value
Value 0.0
Uncertainty 0.1
Num. used stations 1
Type of magnitude ML
Reference to an origin 4287531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-08-18 18:38:51

ML:0.0

Field Value
Value 0.0
Uncertainty 0.1
Num. used stations 1
Type of magnitude ML
Reference to an origin 5786511
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:08:11

Md:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 5
Type of magnitude Md
Reference to an origin 5786511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2014-03-18 14:26:37

Md:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 5
Type of magnitude Md
Reference to an origin 4287531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-08-18 18:41:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2013-08-18T18:28:02.90 0.1 undecidable manual S 184 17.0718 114 0.26 94
IV.PIEI.HHZ. 2013-08-18T18:28:01.50 0.1 undecidable manual S 359 13.1757 120 0.07 98
IV.ATPI.EHZ. 2013-08-18T18:28:01.10 0.1 undecidable manual S 289 11.5773 123 0.14 97
IV.ATVO.HHZ. 2013-08-18T18:28:00.80 0.1 undecidable manual S 250 11.2776 124 -0.08 98
IV.ATPI.EHZ. 2013-08-18T18:27:59.01 0.1 undecidable manual P 289 11.5773 123 0.07 98
IV.ATFO.HHZ. 2013-08-18T18:27:59.42 0.1 undecidable manual S 154 6.1938 141 -0.11 98
IV.PIEI.HHZ. 2013-08-18T18:27:59.16 0.1 undecidable manual P 359 13.1757 120 -0.05 98
IV.MURB.HHZ. 2013-08-18T18:27:59.87 0.1 undecidable manual P 184 17.0718 114 -0.04 98
IV.ATFO.HHZ. 2013-08-18T18:27:58.14 0.1 negative manual P 154 6.1938 141 0.03 100
IV.ATVO.HHZ. 2013-08-18T18:27:58.61 0.1 undecidable manual P 250 11.2776 124 -0.28 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIEI.HHN. ML:0.0 0.000011145 0.42 AML other m 2013-08-18T18:28:02.65
IV.PIEI.HHE. ML:0.1 0.0000135 0.58 AML other m 2013-08-18T18:28:02.69
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