Upstream perturbation and floodplain formation effects on chute-cutoff-dominated meandering river pattern and dynamics.

ABSTRACT: A sustained dynamic inflow perturbation and bar-floodplain conversion are considered crucial to dynamic meandering. Past experiments, one-dimensional modelling and linear theory have demonstrated that the initiation and persistence of dynamic meandering require a periodic transverse motion of the inflow. However, it remains unknown whether the period of the inflow perturbation affects self-formed meander dynamics. Here, we numerically study the effect of the inflow perturbation period on the development and meander dynamics of a chute-cutoff-dominated river, which requires two-dimensional modelling with vegetation forming floodplain on bars. We extended the morphodynamic model Nays2D with growth and mortality rules of vegetation to allow for meandering. We tested the effect of a transverse

SUBMITTER: Weisscher SAH 

PROVIDER: S-EPMC6774324 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature