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Sea-level-rise-induced threats depend on the size of tide-influenced estuaries worldwide
Leuven, J.R.F.W.; Pierik, H.J.; van der Vegt, M.; Bouma, T.J.; Kleinhans, M.G. (2019). Sea-level-rise-induced threats depend on the size of tide-influenced estuaries worldwide. Nat. Clim. Chang. 9(12): 986-992. https://hdl.handle.net/10.1038/s41558-019-0608-4

Bijhorende info:
In: Nature Climate Change. Nature Publishing Group: London. ISSN 1758-678X; e-ISSN 1758-6798, meer
Is gerelateerd aan:
Goodbred Jr., S.L. (2019). Estuaries wrangle with the tides. Nat. Clim. Chang. 9(12): 908-909. https://hdl.handle.net/10.1038/s41558-019-0629-z, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Auteurs  Top 
  • Leuven, J.R.F.W.
  • Pierik, H.J.
  • van der Vegt, M.
  • Bouma, T.J., meer
  • Kleinhans, M.G.

Abstract
    The effects of sea-level rise on the future morphological functioning of estuaries are largely unknown because tidal amplitudes will change due to combined deepening of the estuary mouth and shifting amphidromic points at sea. Fluvial sediment supply is also globally decreasing, which hampers infilling necessary to maintain elevation relative to sea level. Here we model 36 estuaries worldwide with varying sizes, shapes and hydrodynamic characteristics, and find that small shallow estuaries and large deep estuaries respond in opposite ways to sea-level rise. Large estuaries are threatened by sediment starvation and therefore loss of intertidal area, particularly if tidal amplitude decreases at the mouth. In contrast, small estuaries face enhanced flood risks and are more sensitive to tidal amplification on sea-level-rise-induced deepening. Estuary widening can partly mitigate adverse effects. In large estuaries, expanded intertidal areas increase tidal prism and available erodible sediment for adaptation, whereas it slightly reduces tidal amplification in small estuaries.

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