New Method for an Easy Use of Stochastic Process-Based Models Such as Flumy to Reproduce a Fluvial Meandering Reservoir

摘要

Introduction FLUMY is a comprehensive modeling tool dedicated to meandering fluvial systems. The simulation is based on the migration of the centerline, based on hydraulic equations. The model reproduces the growth of meander loops, including chute and neck cut-off. Associated deposits correspond to point bars built up in relation to the migration, sand and mud. plugs filling the abandoned channel in association to neck cut-off. Aggradation is controlled by the frequency and intensity of overbank floods, resulting in coarse sandy deposits at the bottom of the channel, deposition of silty levees in the vicinity of the channel and shale alluvium further away in the floodplain. Levee breaching results in crevasse splays and may generate avulsion, creating a new channel path.