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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Patterns of sediment slug translation and dispersion following typhoon-induced disturbance, Oyabu Creek, Kyushu, Japan
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Patterns of sediment slug translation and dispersion following typhoon-induced disturbance, Oyabu Creek, Kyushu, Japan

机译：台风诱发扰动后的泥过渡和扩散模式，日本九州大矢溪

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摘要

A six-year monitoring programme characterized the migration/dispersion patterns of sediment slugs generated following typhoon-induced disturbances in 1993 and 1997 along a single-thread gravel-bed stream, Oyabu Creek, on Kyushu Island, Japan. This laterally confined creek comprises riffle-pool sequences with intervening bedrock outcrops. The passage of sediment pulses associated with sediment slug processes reflected, and was controlled by, the riffle-pool structures which provided channel bed roughness, the volume of sediment stored along valley floors, and the distribution of bedrock outcrops. Changes to bed material size following major sediment inputs during the disturbance events also exerted an influence on subsequent sediment slug processes. The sequence of rainfall events, together with changes to channel bed structure, induced different phases in the sediment slug processes. The capacity of a reach to store or trap sediment, as recorded by the longitudinal structure of the channel, varied during these differing phases.
机译：一项为期六年的监测计划描述了1993年和1997年台风引发的扰动后沿日本九州岛的Oyabu Creek单线砾石床流产生的沉积物团块的迁移/扩散模式。这条横向受限的小溪包括浅滩-池层序列，中间有基岩露头。与沉积物段塞过程相关的沉积物脉冲的通过反映并控制了浅滩-池结构，该浅滩-池结构提供了河床层的粗糙度，沿谷底的沉积物量以及基岩露头的分布。在扰动事件期间，随着主要沉积物的输入，床料尺寸的变化也影响了随后的沉积物段塞过程。降雨事件的顺序，以及河床结构的变化，导致了沉积物段塞过程的不同阶段。如通道的纵向结构所记录的，在这些不同阶段中，河床存储或捕获沉积物的能力有所不同。

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