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Bed form dynamics in relation to headwater discharge and human influences in the tidal Elbe river, Germany
Gehres, N.; Winterscheid, A.; Frings, R.M.; Vollmer, S. (2013). Bed form dynamics in relation to headwater discharge and human influences in the tidal Elbe river, Germany, in: Van Lancker, V. et al. (Ed.) MARID 2013: Fourth International Conference on Marine and River Dune Dynamics. Bruges, Belgium, 15-17 April 2013. VLIZ Special Publication, 65: pp. 119-126
In: Van Lancker, V.; Garlan, T. (Ed.) (2013). MARID 2013: Fourth International Conference on Marine and River Dune Dynamics. Bruges, Belgium, 15-17 April 2013. VLIZ Special Publication, 65. Royal Belgian Institute of Natural Sciences/SHOM/Flanders Marine Institute (VLIZ): Oostende. ISBN 978-2-11-128352-7. 338 pp., more
In: VLIZ Special Publication. Vlaams Instituut voor de Zee (VLIZ): Oostende. ISSN 1377-0950, more

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  • Gehres, N.
  • Winterscheid, A.
  • Frings, R.M.
  • Vollmer, S.

Abstract
    The major part of the navigation channel in the tidal Elbe river in Germany is covered with bed form structures. When increasing in height, these structures impair the safety of navigation and therefore have to be eliminated by dredging or water injection procedures. Hence it is important for river managers that the understanding of bed form dynamics is improved. Therefore we analyzed eleven echo-sounding datasets from March to August 2010 during different headwater discharge with the Rheno Bedform Tracking software. In our study area near St. Margarethen we detected over 10.000 individual bed form structures with an average height of 2m and an average length of 82m. Results of the bed form height and length do not show correlation with headwater discharge. But we identified a correlation between migration rate and headwater discharge. Using the example of one individual bed form structure we were able to monitor the re-development of this structure after it has been eliminated by water injection procedure. It could not be established whether sediment supply on relocation sites close to the navigation channel in the study area has an influence on growth rate of bed form structures in the navigation channel.

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