Study on the morphological equilibrium condition on river mouths and tidal inlets
河口及入潮口形态平衡条件研究
基本信息
- 批准号:14550506
- 负责人:
- 金额:$ 2.24万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2002
- 资助国家:日本
- 起止时间:2002 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
River mouths and tidal inlets in sandy beaches develop sand spits by trapping littoral drift. Since narrowing of the channels often causes obstruction of flood passage or navigation, appropriate control of the channels is one of the important subjects in coastal management. The aim of this study is to find the universal condition of the morphology equilibrium for the channels in order to serve the management.Morphological development is quantified by the sediment budget with the sediment supply from littoral drift and sediment removal by river and tidal flows. The equilibrium condition is theoretically derived as the balance of the supply and removal and is equivalent with the stationary condition of the morphology. The dimensionless channel width in equilibrium is expressed as a function of two dimensionless parameters, Φ_R and Φ_T which proportional to the relative importance of the sediment removals by the fiver flows and tidal flows to the sediment supply respectively.This equilibrium condition on the river mouths is verified by the field data. The Indonesian rivers, Opac, Serayu, Wawar, Tipar, and Bogowanot, which all face the Indian Ocean in the south coast of Jawa Island and prone to close in the dry season for the high wave, were examined. Six major rivers in Japan were also examined.The condition was also examined for the tidal inlets in the Pacific, Atlantic and Gulf coasts in USA. The equilibrium condition derived here is shown to be universal and to unify the river mouths and tidal inlets.
沙滩上的河口和潮汐入口通过截留沿岸漂移而形成沙嘴,由于河道变窄常常导致洪水通道或航行受阻,因此对河道进行适当的控制是海岸管理的重要课题之一。就是要找到河道形态平衡的普遍条件,为管理服务。形态发展是通过沉积物收支来量化的,其中包括沿岸漂移的沉积物供应和河流和潮汐流的沉积物去除,平衡条件为。理论上推导为供给和去除的平衡,并且与形态的稳态条件等效。平衡状态下的无量纲河道宽度表示为两个无量纲参数 Φ_R 和 Φ_T 的函数,其与沉积物去除的相对重要性成正比。河口的这种平衡条件通过印度尼西亚河流 Opac、Serayu、Wawar、Tipar 和 的现场数据得到验证。还对日本六条主要河流进行了检查,这些河流均位于爪哇岛南海岸,面向印度洋,并且在旱季容易因高浪而关闭。美国太平洋、大西洋和墨西哥湾沿岸的平衡条件被证明是通用的,并且统一了河口和潮汐入口。
项目成果
期刊论文数量(16)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
富樫 昇, 真野 明: "阿武隈川の洪水時の浮遊土砂輸送"水工論文集. 48. 949-954 (2004)
Noboru Togashi、Akira Mano:“阿武隈河洪水期间的悬浮沉积物输送”水利工程杂志 48. 949-954 (2004)。
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- 影响因子:0
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Equilibrium condition for the narrowest cross section of major river mouths with sand spit
沙嘴主要河口最窄断面的平衡条件
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:T.Sato;T.Suprijo;A.Mano
- 通讯作者:A.Mano
Equilibrium condition at the narrowest section of the major rivers with sand spits
主要河流沙嘴最窄段的平衡状况
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Y.Adikari;S. Kikuchi;and T.Araya;長濱嘉孝;小林 亨;清水収・米津仁司・都築一憲・山下彰司;Kiyoshi Soyano;清水収;Yasuhisa Kobayashi;Sato T.
- 通讯作者:Sato T.
Hiroyasu Kato, Akira Mano: "Flood runoff model on one kilometer mesh for the Upper Chang Jiang River"International Conference of GIS and Remote Sensing in Hydrology, Water Resources and Environment. 156-163 (2003)
Hiroyasu Kato、Akira Mano:“长江上游一公里网格洪水径流模型”水文、水资源与环境GIS与遥感国际会议。
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- 影响因子:0
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MANO Akira其他文献
MANO Akira的其他文献
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