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  sophisticatedpostprocessingprocedure
  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  distribution) ­
  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  parameters ­
  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  sediment ­
  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