bertalan ph d_sajó_(slaná)_2014
TRANSCRIPT
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Investigations of channel evolution on River Sajó
László Bertalan PhD studentUnviversity of Debrecen (Hungary)
11.10. 2014.
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Sample areas 1.
2.
3.
4.
I. Recent channel development of River Sajó
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I. Recent channel development of River Sajó
Survey methods:• Total station• RTK GPS
Soil samples:• Every 10 cm from surface to groundwater level• 312 samples yet…but more coming • Grain size distribution, CaCO3
Channel evolution monitoring:• DJI Phantom 1 UAV• Ortophotos + Digital Surface Models
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Sample area 1-2.
I. Recent channel development of River Sajó
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I. Recent channel development of River Sajó
Sample area 1-2.
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Sample area 3.
I. Recent channel development of River Sajó
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I. Recent channel development of River Sajó
Sample area 3.
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8,9 m
8,4 m
2,8 m
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UAV - DFM
I. Recent channel development of River Sajó
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UAVDFM + Ortophoto
I. Recent channel development of River Sajó
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Accuracy assessment
I. Recent channel development of River Sajó
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19802010
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Channel morphometryanalysis
Archive military aerial photographs•1951•1956•1975•1988
Ortophotos•2000•2005•2011
II. Long term temporal analysis of River Sajó