FLOOD FLOW AND BED VARIATION ANALYSIS METHOD FOR GRAVEL BED RIVER OF THE KAMANASHI RIVER WITH LARGE AMOUNT OF INFLOW SEDIMENT DURING LARGE-SCALE FLOOD

DOI

Bibliographic Information

Other Title
  • 大規模洪水時に大量の土砂流入を伴う石礫河川釜無川の洪水流・河床変動解析法に関する研究

Description

<p>The Kamanashi River is a steep river covered with gravel grains, cobbles and boulders. In 1982, the record breaking largest flood occurred and brought large scale sediment deposition in the river channels due to sediment yielding from the upstream mountainous areas. In addition, the grain size distributions became coarser in the upper reaches and finer in the lower reaches due to sorting during the flood. In this study, we developed and applied a flood flow and bed variation analysis method considering the nonequilibrium sediment motions of boulders, gravel grains and sands with large amount of suspended sediments in the 1982 flood. The developed model could explain that the bed materials in the downstream reaches became finer by fine sediment grains transported from the upstream to the downstream due to longitudinal sorting.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390854717777046528
  • DOI
    10.11532/river.26.0_657
  • ISSN
    24366714
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Allowed

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