the German Bight. MufMod aimed at bringing together marine geoscientists and coastal engineers to build
up consistent bathymetric and sedimentological databases and to compare different numerical models using
the same data input and model grid with respect to uncertainties in their results.
AufMod provides a suite of consistent annual bathymetries as well as initial sediment parameters which
can be used by numerical MD models for further analyses. Different patchy datasets from bathymetric
survey campaigns since 1948 have been compiled and have undergone a sophisticatedpostprocessingproce-
dure to overcome inconsistencies arising from the use of different echosounding techniques, vessels, tidal
correction and so on. Dor the first time, data on grain sige distribution have been composed for the entire
North Sea including the German Bight in order to analyge geomorphologicalprocesses and to calculate
sediment input parameters for morphodynamic modelling. By establishinga so-called ‘Dunctional Seabed-
Model” consistent annual bathymetries and initial sediment distribution and composition (grain sige dis
tribution) have been made available together with their spatial and temporal uncertainties.
The morphodynamic numerical model simulations cover a time span from 1996 to 2008. They are based
on natural processes and take account of the whole variability of tides, external surge, river run-off, wind
and waves. “AupMod”'provides a suite of consistent annual bathymetries as well as initial sediment pa
rameters which can be used by numerical MD mode Is forfurther analyses. By using the same model grids
the strength and weakness of the different numeric models can be evaluated and their uncertainties can be
assessed. The morphodynamic model results provide a first comprehensive impression of the resulting sedi
ment transport pathways in the German Bight.
Turther model runs have focused on the sensitivity of sediment transport and the morphological response
due to wind forcing mean sea level rise and variation in porosity.
Keywords
North Sea, German Bight, sediment mixture, sediment distribution, porosity, bathymetry, sediment
transport, morphodynamic, numerical modelling mean sea level rise
Inhalt
1 Einleitung. 3
2 Untersuchungsgebiet 4
3 Datenbasis 5
3.1 Sedimentdaten 5
3.2 Bathymetrische Daten 8
3.3 Hydrodynamische und meteorologische Daten 9
4 Funktionales Bodenmodell 10
5 Suite der numerischen Modellierungswerkzeuge 16
5.1 Modellgebiet (Gitter) 16
5.2 Randbedingungen 17
5.3 Modellkalibrierung und -Validierung 17
5.4 Sensitivitätsstudien 19
6 Sedimenttransport in der Deutschen Bucht 19
6.1 Sedimenttransportpfade 20
