Sedimentation processes in a short residence‐time intermontane lake, Kamloops Lake, British Columbia
Sedimentation processes in a short residence‐time intermontane lake, Kamloops Lake, British Columbia
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不列颠哥伦比亚省坎卢普斯湖短停留时间山间湖的沉积过程
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
E. Carmack
中科院分区：
文献类型：
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作者：
C. Pharo;E. Carmack
不列颠哥伦比亚省中部的坎卢普斯湖是一个深山间湖泊，由汤普森河强劲且季节性变化的水流注入。对湖河相互作用的考虑，得到物理和地质证据的支持，表明湖内沉积物的迁移和沉积是由三个相互依存但又不同的过程控制的：湖河交汇处的三角洲进积，导致三角洲顶积和可预见的层理；沿三角洲表面产生的沉积物密度激增，导致从三角洲底部向湖面形成浊积岩层序；以及由相互流动的河流羽流的分散，由于科里奥利效应，导致沿着湖的右侧（北半球）沿水流方向产生更高的沉积速率和更大比例的粗物质。
Kamloops Lake in central British Columbia is a deep, intermontane lake fed by the strong and seasonally variable flows of the Thompson River. Considerations of lake-river interaction, supported by physical and geological evidence, suggest that sediment transport and deposition within the lake is controlled by three interdependent but distinct processes: delta progradation at the lake-river confluence which results in delta topset and foresee bedding; sediment density surges originating along the delta face which result in turbidite sequences lakeward from the base of the delta; and dispersal by the interflowing river plume which, due to Coriolis effects, results in a higher sedimentation rate and greater fraction of coarser material along the right-hand side (Northern Hemisphere) of the lake in the direction of flow.