B. Van Maren Albert P. Oost
Relation with large-scale sediment budgets
Landfills
N a a
Wadden Sea: mud transport from west to east
2
Landfill (% of total deposition)
Landfill (% of coastal flux)
Total extraction is 11 – 16%
12.1-16.5
0.6-5.5
0.48
0.32
0.2 0.8
Ems estuary: high turbidity
Land reclamations: loss of natural sediment sinks
van Maren et al. (2016)
Ems estuary: high turbidity
4
Deepening of fairways: more landward transport of mud
TIDE facts, NY
Land reclamations: loss of natural sediment sinks
Result: large dredging volumes …
van Maren et al. (2016)
6
… which also reduce turbidity in the Ems Estuary
Predicted reduction in surface sediment concentration when
extracting all sediment depositing in ports and fairways (van Maren et al., 2016)
Main message:
• Landfills constitute a substantial amount of the large-
scale fine-grained sediment budget (11-16%, depending on the metric)
• Landfills are created from excess sediment depositing in ports and fairways
• Landfills may lead to a reduction in sediment concentrations
