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首页> 外文期刊>International Journal of Erosion Control Engineering >Large Rivers and Sediment Cascades: Connectivity and Discontinuity
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Large Rivers and Sediment Cascades: Connectivity and Discontinuity

机译：大型河流和泥沙流域：连通性和间断性

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The role of large rivers in conveying sediments from continents to oceans has long interested geoscientists but until relatively recently the quantitative description of sediment cascades within large river catchments had been somewhat limited. Renewed interest in global biogeochemical cycles has refocused attention on questions of how large rivers respond to disturbance imposed by changing climate and tectonic conditions or from human-induced influences on sediment production and conveyance. Some progress has been made in examining the contemporary and spatial dynamics of sediment delivery in some Asian river basins, where the exposure of populations to water and sediment-related disasters is acute. This paper considers how these essentially desk-top studies of sediment cascades can be linked effectively to field-based studies in order to contribute to explaining and predicting sediment disasters. It focuses on current understanding of response to disturbance in large rivers and considers the conceptual challenge of representing connectivity and discontinuity in sediment cascades.
机译：长期以来，大型河流在将沉积物从大陆输送到海洋中的作用一直引起地球学家的兴趣，但是直到最近，对大型河流流域内的沉积物级联的定量描述仍受到一定的限制。对全球生物地球化学循环的新兴趣将注意力重新集中在以下问题上：大型河流如何应对气候和构造条件变化或人类对沉积物生产和输送的影响所造成的干扰。在审查亚洲某些流域的泥沙输送的当代和空间动态方面取得了一些进展，那里的人口面临着与水和泥沙有关的灾难，这是非常严重的。本文考虑了如何将这些基本的台式沉积物级联研究有效地与基于实地的研究联系起来，从而有助于解释和预测沉积物灾害。它着重于当前对大河流域扰动响应的理解，并考虑了代表级联沉积物的连通性和不连续性的概念挑战。

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