sládek, rusnák
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MONITORING OF CHUTE CUTOFF IN MEANDER BEND
(ONDAVA RIVER, STROPKOV)
Ján Sládek, Miloš Rusnák
STUDY AREA
METHODS HiSystems GmbH – Mikrokopter hexa (hexakopter)
ERT – ARES
Avulsion channel
1949 1961 1972 1981
1987
2002
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
Avulsion channel
Geodetic survey 2012 > 700 points
UAV photogrammetry june_2012
april_2014
july_2014
UAV photogrammetry
UAV photogrammetry: processing
UAV photogrammetry: results
UAV photogrammetry: results
• low altitude of fly (to 70 m) • high resolution photo
UAV photogrammetry: results
UAV photogrammetry: results
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
Sediment analysis
Geophysics
Thank you for
your attention
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