A Multiscale Centennial Morphodynamic Model for the Southern Baltic Coast

Abstract

Abstract The Darss-Zingst Peninsula on the southern Baltic Sea was formed after the Littorina transgression onset about 8000 cal. y BP. It originated from several discrete islands, has been reshaped by littoral currents and wind-induced waves during the last 8000 y, and evolved into a complex lagoon system as seen today; thus, it may serve as an example to study coastal evolution under long-term climate change. A methodology for developing a multiscale process-based morphodynamic model for simulation of decadal to centennial evolution of a wave-dominated coastal environment is presented here. The model consists of eight main modules. The two-dimensional vertically integrated current module, the wave module, the bottom boundary layer module, the sediment transport module, the cliff erosion module, and the nearshore storm module are real-time calculation modules that aim to solve the short-term processes. A bathymetry update module and a long-term control function set, in which the “reduction” concepts and ...