FORMATION AND REDUCTION PROCESSES OF RIVER DELTAS; THEORY AND EXPERIMENTS

[摘要] Beach erosion has recently been recognized as accelerating due to change in sediment sources from rivers. This can be considered as reduction processes of river deltas. In this paper, the formation and reduction processes of river deltas are first investigated theoretically by introducing the non-uniformity of longshore sediment transport into the equation of" continuity of shoreline changes. Theoretical solutions to shoreline changes in the formation and reduction processes are well explained. Secondly, experiments both on the formation and reduction processes were carried out. The theoretical results of the processes compared favorably with the experimental ones.

[学科分类] 建筑学

[关键词] river delta;delta formation;delta experiment