TY - GEN
T1 - Bed load movement over a fully developed armor layer -A tracer experiment
AU - Spiller, S.
AU - Rüther, N.
AU - Koll, Kl
AU - Koll, Ka
PY - 2012
Y1 - 2012
N2 - A cooperation between NTNUTrondheim and the Leichtweiß-Institute for Hydraulic Engineering and Water Resources in Braunschweig brought up an experiment regarding the movement of constantly added tracer particles over a fully developed armor layer. The experiment was performed in a straight hydraulic flume at the hydraulic laboratory in Braunschweig. After developing a static armor layer, additional 60 kg of sediment (d=3 to 5 mm) were added at the upstream end of the flume, constantly over a total time of one hour. Those tracer particles were dyed in a distinctive color with a magnetic sub layer, so that they could easily be distinguished from the bed material after the experiment. This hour of tracer supply was long enough to produce an equilibrium of tracer in- and output at some point, so that the experimental situation can be compared to a persistent tracer addition. The study gave insight in the transport behavior of tracer particles over a developed armor layer under steady flow conditions. It contributed to a discussion about the destabilization of armored streambeds due to upstream sediment addition. Further investigations at NTNU will show how armor layers and additional sediment react on unsteady flow conditions.
AB - A cooperation between NTNUTrondheim and the Leichtweiß-Institute for Hydraulic Engineering and Water Resources in Braunschweig brought up an experiment regarding the movement of constantly added tracer particles over a fully developed armor layer. The experiment was performed in a straight hydraulic flume at the hydraulic laboratory in Braunschweig. After developing a static armor layer, additional 60 kg of sediment (d=3 to 5 mm) were added at the upstream end of the flume, constantly over a total time of one hour. Those tracer particles were dyed in a distinctive color with a magnetic sub layer, so that they could easily be distinguished from the bed material after the experiment. This hour of tracer supply was long enough to produce an equilibrium of tracer in- and output at some point, so that the experimental situation can be compared to a persistent tracer addition. The study gave insight in the transport behavior of tracer particles over a developed armor layer under steady flow conditions. It contributed to a discussion about the destabilization of armored streambeds due to upstream sediment addition. Further investigations at NTNU will show how armor layers and additional sediment react on unsteady flow conditions.
UR - http://www.scopus.com/inward/record.url?scp=84867965228&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84867965228
SN - 9781466575516
T3 - River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics
SP - 465
EP - 471
BT - River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics
T2 - International Conference on Fluvial Hydraulics, River Flow 2012
Y2 - 5 September 2012 through 7 September 2012
ER -