1. Univ. of Siegen, Research Institute for Water and Environment, Paul-Bonatz-Str. 9-11, 57076 Siegen, NW, Germany (corresponding author). ORCID: .
2. Univ. of Siegen, Research Institute for Water and Environment, Paul-Bonatz-Str. 9-11, 57076 Siegen, NW, Germany. ORCID: .
3. Federal Waterways Engineering and Research Institute, Dep. Hydraulic Engineering in Coastal Areas, Wedeler Landstr. 157, 22559 Hamburg, Hamburg, Germany.
4. Univ. of Siegen, Research Institute for Water and Environment, Paul-Bonatz-Str. 9-11, 57076 Siegen, NW, Germany.
5. Retired, Federal Waterways Engineering and Research Institute, Dep. Hydraulic Engineering in Coastal Areas, Wedeler Landstr. 157, 22559 Hamburg, Hamburg, Germany.