BANK EROSION AND MEANDER MIGRATION OF THE RED AND MISSISSIPPI RIVERS, USA

摘要: On large rivers serious bank retreat usually occurs by a combination of fluvial attack intact material plus mass failure under gravity, followed basal clean-out failed material. Both components are affected properties. The susceptibility the to erosion various erosive proces­ ses depends on engineering and geomorphic properties distribution materials with different pro­ perties through bank. stability its characte­ ristic mode depend geotechnical geological materials. However, rate that can be sustained over considerable period is determined capacity flow at toe entrain remove bed, balance between accretion sediments described state endpoint control. importance for retreat, channel geometry meander evolution may illustrated reference migration bends Red Lower Mississippi Rivers in USA. Historical evidence shows how nature encountered outer affects both bend, influencing speed direction bend so altering overall pattern evolution.