Author(s): Luis Manuel Lopez Zarate; Stefan Kraatz; Jan-Moritz Muller; Gabriele Gonnert

Linked Author(s):

Keywords: Elbe; Tidal creek / Tideway; 2D- Hydro numerical Modelling

Abstract: Between the weir in Geesthacht and the mouth into the North Sea, the Elbe river is under the influence of the tides. It is therefore also referred to as the Tidal Elbe. The alternation of high and low tide poses a special challenge for maintaining the water-side accessibility of the city but specially the port, because the tidal forces, the currents, constantly change the river. Due to the open mouth to the North Sea, the water level is influenced by the tide and the water level of Hamburg St. Pauli (the main gauging station in Hamburg) changes in approximately 4 meters twice a day. Many examples of tidal creeks exist already around Hamburg, some natural, some man-made. Through the experience of the already existing tidal creeks and 2D- hydro numerical and morphodynamical models it is possible to earn a deep understanding of the hydraulic and morphological development of tidal creeks. With the creation of a new tidal creek which is morphologically stable, it is possible to enhance the ecology in a faster way, at the time the building and maintenance cost are reduced; for this, long-term morphological model are to be implemented and evaluated by the diverse Equilibrium-theories.

DOI: https://doi.org/10.3850/978-90-833476-1-5_iahr40wc-p1593-cd

Year: 2023