Foredunes and blowouts: initiation, geomorphology and dynamics
Foredunes and blowouts: initiation, geomorphology and dynamics
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DOI：
10.1016/s0169-555x(02)00184-8
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发表时间：
2002-11-01
期刊：
影响因子：
3.9
通讯作者：
Hesp, P
中科院分区：
文献类型：
--
作者：
Hesp, P
本文综述了早期前丘、成熟前丘和井喷的形成、动力学、地貌和演化。初期前沙丘可能以各种方式形成，形成斜坡、阶地或山脊的堡垒，这取决于侵蚀速率、植被类型和覆盖、沉积物搬运速率和侵蚀过程的规模。植被覆盖、形态、生长速率和类型联合收割机与空气动力学过程相结合，决定沙丘和洼地的形态。已建立的前沙丘分为五种形态生态类型，并详细说明了两种类型的流动行为。本文提出了一个不同时间尺度下沙丘演化路径的新模型。井喷启动，动力学和沉积物运输，和演变进行了检查。在整个审查中，目前的沙丘过程的理解和一系列的想法，新的研究可能性的差距。(C)2002 Elsevier Science B.V.保留所有权利。
This paper reviews the initiation, dynamics, geomorphology and evolution of incipient foredunes, established foredunes, and blowouts. Incipient foredunes may be initiated in a variety of ways leading to the fort-nation of ramps, terraces or ridges depending on progradation rates, vegetation type and cover, sediment transport rates and scale of erosional processes. Vegetation cover, morphology, growth rates, and types combine with aerodynamic processes to determine dune and swale morphology. Established foredunes are classified into five morpho-ecological types, and the flow behaviour over two types is detailed. A new model of foredune evolutionary paths at various possible time scales is presented. Blowout initiation, dynamics and sediment transport, and evolution is examined. Throughout the review, the gaps in present understanding of dune processes and a range of ideas for new research possibilities are provided. (C) 2002 Elsevier Science B.V. All rights reserved.