Die Küste, 81 (2014), 369-392
386
6 Sediment transport in the German Bight
The sediment transport quantities are charged from different sources. Beneath the estuary
discharges into the German Bight the exchange with adjacent regions of the North Sea
are considerable. Several studies have been performed in the past to estimate wide area
sediment transport within the North Sea and the German Bight. Fig. 15 shows the basic
results.
/ input
f output
transport
References
A: Pohlmann and Puls (1994)
B: McManus and Prandle (1997)
C: Eisma and Irion (1988)
D: McCave (1987)
E: Odd and Murphy (1992)
F: Boon et al. (1997)
G: van Alphen (1990)
H: Eisma (1981)
I: Puls et al. (1997)
J: de Kok (2004)
K: Nauw (2009)
L: BAW (unpublished)
1.4° -
Cliff
0.7 B -
Coastal
1 G -2.4 H
erosion
Rivers: 4.41 F -4.8°
Primary production: 1 H
Atmospheric Deposition: 1 w
Deposition on land: 2.7 C
Transport
[ Mt / yr ]
Figure 15: Estimation of sediment transport budgets in the literature.
6.1 Sediment transport paths
Identifying sediment transport paths in the German Bight was one of die main targets in
AufMod. The sediment transport paths were calculated from the vectors of the resulting
total transport (suspended and bed-load sediment transport) for the year 2006, including
the wave effect. Fig. 16 shows the sediment transport paths in the southern North Sea
calculated by TELEMAC (A), MARINA (B) and UnTRIM (C), as well as die mean value
resulting from diese different simulation runs (D).
The basic trend of the movement of sediment from west to east seaward of the West-
and East Frisian coast is shown. Mixed inconsistent transports predominate within the
inner German Bight (Jade, Weser, Elbe estuary up to approximately Helgoland). On the
western part of the North Frisian coast the vectors deviate widely seaward in a northerly
direction. A left-turning circulation arises in die area between Wash and Doggerbank.