globalchange  > 气候变化与战略
DOI: 10.1016/j.earscirev.2019.02.002
论文题名:
Matching trends in channel width, sinuosity, and depth along the fluvial to marine transition zone of tide-dominated river deltas: The need for a revision of depositional and hydraulic models
作者: Gugliotta M.; Saito Y.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2019
卷: 191
起始页码: 93
结束页码: 113
语种: 英语
中文关键词: Backwater ; Channel morphology ; Human impact ; River discharge ; Sedimentation ; Tidal energy
英文关键词: anthropogenic effect ; backwater ; channel hydraulics ; channel morphology ; depositional environment ; fluvial deposit ; river discharge ; sedimentation ; tidal power
英文摘要: Along their fluvial to marine transition zone, tide-dominated river deltas show upstream to downstream trends in channel width, sinuosity, and depth, which at present have been only partially reported. This review article aims to describe these morphological trends from five modern tide-dominated river deltas using original data collected from satellite images and bathymetric maps and published data from field surveys. All the studied channels show similar trends with two distinct tracts separated by areas of morphological changes. The upstream tracts are characterized by constant width, relatively high sinuosity, and seaward-increasing depth, and are mainly controlled by the fluvial dynamics. The downstream tracts are characterized by seaward-increasing width, relatively low sinuosity, and seaward-decreasing depth, and are mainly controlled by the tidal dynamics. The delineation of this morphological configuration of the channels is crucial to understand the responses of deltas to the interacting riverine and marine processes. Additionally, this has important implications for depositional and hydraulic models, and for the long-term evolution and the assessment of human-induced versus natural modifications of these systems. © 2019 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165820
Appears in Collections:气候变化与战略

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作者单位: Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, 690-8504, Japan; Geological Survey of Japan, AIST, Central 7, Higashi 1-1-1, Tsukuba, 305-8567, Japan

Recommended Citation:
Gugliotta M.,Saito Y.. Matching trends in channel width, sinuosity, and depth along the fluvial to marine transition zone of tide-dominated river deltas: The need for a revision of depositional and hydraulic models[J]. Earth Science Reviews,2019-01-01,191
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