Morphodynamic modeling concepts

Lehfeldt, R, Barthel, V, 1998:
Numerische Simulation der Morphogenese von Windwatten. Die Küste, 60
  • Modeling of morphodynamic processes requires more diverse data sets than conventional hydrodynamic simulations: high-resolution bathymetry, detailed information on sediment parameters, hydro-dynamic and transport boundary conditions for scenarios under investigation.
  • Morphodynamic models are run for limited domains in the coastal zone. Input data for these regional models are obtained from large scale circulation models of the atmosphere and the Baltic Sea provided by local agencies and coastal data centers.
  • Model validation relies on long-term water level data from coastal gauges, wave data from near- and off-shore buoys as well as wind measurements. Additional current meter data in channel systems is used for the assessment of simulated 2D flow patterns.
  • Long-term simulation of wave-induced sediment transport is checked against coastal profile data at selected locations for various periods. First estimates of littoral transport are obtained from 1D long-shore models applied in uniform parts of the coastline. This information is used to specify reasonable boundary conditions for 2D area morphodynamic models.
  • Definition of scenarios for significant morphodynamic activity is based on long-term analyses of wind, wave and water-level field and hindcast data.