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Comparison of River Mouth Process in Tohoku District

东北地区河口过程比较

基本信息

批准号：
01302045
负责人：
SAWAMOTO Masaki
金额：
$ 1.6万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01302045/
关键词：
Tohoku District River Mouth Process Iwaki River Abukuma River Mogami River Medium And Small Rivers Nanakita River River Mouth Sand Barrier

项目摘要

Hydraulic and topographical characteristics of river mouth in Tohoku district were surveyed under the cooperation of the universities in six prefectures. The rivers surveyed are as follows :Aomori : Iwaki R. (stability and hydraulics at river mouth), Takase R. (water quality and hydraulics), Mabechi R. (topography change) and Niida R. (hydraulics)Iwate : 42 rivers on Sanriku Coast (Comparison of topography)Akita : Yoneshiro R. (topography change), Omono R. (topography change) and Koyoshi R. (river mouth process)Miyagi : Nanakita R. (river mouth process) and Abukuma R. (river mouth process)Yamagata : Mogami R. (topography change) and Aka R. (topography change)Fukushima : 36 small rivers (comparison of topography)Both the literature and the field survey were carried out for all rivers. Two gatherings were performed in order to discuss the comparison of each river at Jusanko, the Iwaki River mouth, 1989, and at Yunohama, near the Mogami River mouth and the Aka River mouth, 1990.The most important results obtained is that the scale of river controls phenomena observed at river mouths. For example, the topography change observed in large scale river varies over some years. On the other hand, the topography of small river varies according to annual variation of river flow.It was also confirmed that the further field survey may need to reveal the mechanism of river mouth process.

在日本东北部6个都道府县的大学的合作下，对河口的水力和地形特征进行了调查。调查的河流如下：青森：岩城河。（河口稳定性和水力学），Takase R.（水质和水力学），Mabechi R.（地形变化）和Niida R.（水力学）岩手县三陆沿岸42条河川（地形比较）秋田县米代河（topography change）、Omono R.（地形变化）和Koyoshi R.（河口过程）宫城：七北河（河口过程）和Abukuma R.（河口过程）山形：最上R.（地形变化）和Aka R.（地形变化）福岛：36条小河（地形比较）对所有河流进行了文献和实地调查。为了讨论1989年在岩城河口的Jusanko和1990年在最上河口和赤江河口附近的Yunohama的比较，进行了两次集会。例如，在大型河流中观察到的地形变化在几年内会发生变化。另一方面，小河流的地形也随着河流流量的年变化而变化，这也证实了进一步的实地调查可能需要揭示河口过程的机制。