1. Institute of Hydraulic Engineering and Water Resources Management; RWTH Aachen Univ.; Mies-van-der-Rohe-Straße 17, 52056 Aachen, Germany.
2. Schleswig-Holstein’s Government-Owned Company for Coastal Protection, National Parks and Ocean Protection (LKN); Herzog-Adolf-Straße 1, 25813 Husum, Germany.