Presenters-0600

From CSDMS
CSDMS 2023: Patterns and Processes Across Scales


Modelling chenier dynamics in the context of mangrove-mud coasts: A challenge across spatial and temporal scales



Silke Tas

Boston University, United States
silke@bu.edu
Ad Reniers Delft University of Technology Netherlands
Bas van Maren East China Normal University, Delft University of Technology, Deltares Netherlands
Zoe Hughes Boston University United States
Duncan FitzGerald Boston University United States


Abstract
Cheniers are ridges consisting of coarse-grained sediments, resting on top of muddy sediment. Along these muddy coastlines, cheniers provide shelter against wave attack, mitigating erosion or even enhancing accretion. As such, cheniers play an important role in the dynamics of the entire coastal landscape. This research focused on cheniers along mangrove-mud coasts. Therefore, chenier dynamics needed to be understood at the temporal and spatial scales of the mangrove vegetation as well. We developed a hybrid modelling approach, combining the strengths of complex process-based modelling (Delft3D), which allowed us to model the mixed-sediment dynamics at small temporal and spatial scales, with the strengths of a highly idealized profile model, providing low computational efforts for larger temporal and spatial scales.

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Of interest for:
  • Marine Working Group
  • Coastal Working Group
  • Ecosystem Dynamics Focus Research Group