Earthquake with magnitude of ML 0.1 on date 15-08-2015 and time 20:36:31 (Italy) in region 8 km N Sellano (PG)

A magnitude ML 0.1 earthquake occured in region: 8 km N Sellano (PG), on

  • 15-08-2015 18:36:31 (UTC)
  • 15-08-2015 20:36:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.96, 12.91 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sellano PG 8 1079 1079
Monte Cavallo MC 8 145 1224
Serravalle di Chienti MC 13 1070 2294
Preci PG 14 724 3018
Pieve Torina MC 15 1458 4476
Visso MC 15 1107 5583
Cerreto di Spoleto PG 16 1075 6658
Trevi PG 16 8469 15127
Fiordimonte MC 17 202 15329
Valtopina PG 17 1398 16727
Foligno PG 17 57155 73882
Muccia MC 17 915 74797
Pievebovigliana MC 18 866 75663
Ussita MC 19 444 76107
Campello sul Clitunno PG 19 2442 78549
Nocera Umbra PG 20 5839 84388
Spello PG 20 8645 93033

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
46 Km E of Perugia (166134 inhabitants)
49 Km NE of Terni (111501 inhabitants)
73 Km W of Teramo (54892 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
99 Km S of Fano (60888 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
Rev 100 ML 0.1 2015-08-15
18:36:31
42.96 12.91 12 2015-08-15
19:31:35
Sala Sismica INGV-Roma 20918831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-08-15 18:36:31 ± 0.16
Latitude 42.96 ± 0.01
Longitude 12.91 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 20918831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1564
Semi-minor axis of confidence ellipse (meter) 162
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 3
Circular confidence region, given by single value of horizontal uncertainty (meter) 1560
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 235
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.30037
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.1

Field Value
Value 0.1
Uncertainty 0.1
Num. used stations 1
Type of magnitude ML
Reference to an origin 20918831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-08-15 19:31:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NARO.HHZ. 2015-08-15T18:36:59.99 3.0 undecidable manual Sg -0.01 0
IV.PP3.EHZ. 2015-08-15T18:36:51.99 3.0 undecidable manual Sg 0.05 0
IV.ATCC.EHZ. 2015-08-15T18:36:43.04 0.1 undecidable manual S 318 0.3004 93 0.1 96
IV.ASSB.HHZ. 2015-08-15T18:36:40.00 0.1 undecidable manual S 294 0.2032 97 -0.08 94
IV.ATCC.EHZ. 2015-08-15T18:36:38.13 0.1 undecidable manual P 318 0.3004 93 -0.01 94
IV.FDMO.HHZ. 2015-08-15T18:36:38.33 0.1 undecidable manual S 59 0.1475 105 -0.14 93
IV.ASSB.HHZ. 2015-08-15T18:36:36.44 0.1 undecidable manual P 294 0.2032 97 -0.05 95
IV.CESI.HHZ. 2015-08-15T18:36:35.96 0.1 undecidable manual S 352 0.0441 152 -0.08 98
IV.FDMO.HHZ. 2015-08-15T18:36:35.61 0.1 undecidable manual P 59 0.1475 105 0.05 97
IV.CESI.HHZ. 2015-08-15T18:36:34.38 0.1 undecidable manual P 352 0.0441 152 0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.2 2.045E-5 0.3 AML other m 2015-08-15T18:36:36.07
IV.CESI.HHE. ML:0 1.267E-5 1.4 AML other m 2015-08-15T18:36:36.08
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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