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河道遷移或河流改道（英語：river channel migration）是指沖積河道在氾濫平原橫向遷移的現象。這個過程主要是由河岸侵蝕和沉積共同造成的。一般在曲流河。或辮狀河中常見。 當水流進入沖積河流的彎道時，因離心力引起了螺旋流（英語：helicoidal flow），螺旋流在一邊的河岸侵蝕堤岸，被侵蝕的沉積物在對面河岸沉積，造成岸坝.
, River channel migration is the geomorpholo … River channel migration is the geomorphological process that involves the lateral migration of an alluvial river channel across its floodplain. This process is mainly driven by the combination of bank erosion of and point bar deposition over time. When referring to river channel migration, it is typically in reference to meandering streams. In braided streams, channel change is driven by sediment transport. It has been proposed that lateral migration is a particularly dominant erosive process in savanna landscapes.ant erosive process in savanna landscapes.
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| rdfs:comment |
River channel migration is the geomorpholo … River channel migration is the geomorphological process that involves the lateral migration of an alluvial river channel across its floodplain. This process is mainly driven by the combination of bank erosion of and point bar deposition over time. When referring to river channel migration, it is typically in reference to meandering streams. In braided streams, channel change is driven by sediment transport. It has been proposed that lateral migration is a particularly dominant erosive process in savanna landscapes.ant erosive process in savanna landscapes.
, 河道遷移或河流改道（英語：river channel migration）是指沖積河道在氾濫平原橫向遷移的現象。這個過程主要是由河岸侵蝕和沉積共同造成的。一般在曲流河。或辮狀河中常見。 當水流進入沖積河流的彎道時，因離心力引起了螺旋流（英語：helicoidal flow），螺旋流在一邊的河岸侵蝕堤岸，被侵蝕的沉積物在對面河岸沉積，造成岸坝.
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河道遷移
, River channel migration
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