sládek, rusnák
TRANSCRIPT
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MONITORING OF CHUTE CUTOFF IN MEANDER BEND
(ONDAVA RIVER, STROPKOV)
Ján Sládek, Miloš Rusnák
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STUDY AREA
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METHODS HiSystems GmbH – Mikrokopter hexa (hexakopter)
ERT – ARES
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Avulsion channel
1949 1961 1972 1981
1987
2002
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Avulsion channel
width: 150 m; length: 450 m created by meander chute cut off 3 floods events in 2010
Q 254 m3.s-1 (17.05.), Q 220 m3.s-1 (04.06.) and Q 150 m3.s-1 (29.07.) with recurrence interval 1 – 5 years
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Avulsion channel
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Geodetic survey 2012 > 700 points
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UAV photogrammetry june_2012
april_2014
july_2014
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UAV photogrammetry
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UAV photogrammetry: processing
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UAV photogrammetry: results
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UAV photogrammetry: results
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• low altitude of fly (to 70 m) • high resolution photo
UAV photogrammetry: results
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UAV photogrammetry: results
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UAV photogrammetry: results
Period Volume of eroded material
june 2012 – april 2014 1236 m3
april 2014 – july 2014 1064 m3
Total (june 2012 – july 2014) 2300 m3
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Sediment analysis
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Geophysics
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Thank you for
your attention