FLOW STRUCTURES DETERMINING RIVER LEVEL IN AN ESTUARY
决定河口河流水位的水流结构
基本信息
- 批准号:13450199
- 负责人:
- 金额:$ 4.35万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2001
- 资助国家:日本
- 起止时间:2001 至 2003
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
It is essential to find the correct relationship between flow rate and river level in order to have information about the flow rate during flood and about uses of the river water like agriculture and hydroelectric generation. Normally, the river flow rate is assumed to be given by the level through the empirical H-Q equation, where H is the water level (height) and Q is the flowrate, but during drought, it becomes extremely more difficult to apply this expression to the estuary than to locations upstream. This is because the river level can take a large range of values under the influence of the four key factors of tide, atmospheric pressure, wind direction and wind speed. In this study, it was attempted to derive a method for quantitative estimation of the effects of tide, atmospheric pressure, wind direction and wind speed on flowrate in the estuary of the Ishikari River, where these four factors dramatically lower the correlation between water level (H) and river flowrate (Q). It was found that the effect of tide and atmospheric pressure on sea level is almost exactly reflected in the fluctuations of river level. Data from observations of river level under windless conditions and steady river flowrate allowed application of empirical rules for river rise due purely to flowrate, providing a quantitative estimate of the relation between wind and river behavior. Next, the flowrate was estimated at a certain location using the obtained quantitative relation between the four factors and river level, and this was found to be nearly identical to the observed flowrate. This confirmed the practical validity of this study.
必须找到流量和河流水位之间的正确关系,以便了解洪水期间的流量以及农业和水力发电等河流水的使用情况。通常情况下,河流流速被假定为通过经验H-Q方程的水平,其中H是水位(高度)和Q是流量,但在干旱期间,它变得非常困难,将这个表达式应用到河口比上游的位置。这是因为在潮汐、气压、风向和风速这四个关键因素的影响下,河流水位可以取很大的数值范围。在这项研究中,它试图推导出一种方法来定量估计潮汐,大气压,风向和风速对流量的影响,在石狩河河口,这四个因素显着降低水位(H)和河流流量(Q)之间的相关性。结果表明,潮汐和气压对海平面的影响几乎完全反映在河流水位的波动中。无风条件下的河流水位和稳定的河流流量的观测数据允许应用经验规则的河流上升纯粹是由于流量,提供了风和河流行为之间的关系的定量估计。其次,流量估计在一定的位置使用的四个因素和河流水位之间的定量关系,这被发现是几乎相同的观测流量。这证实了本研究的实际有效性。
项目成果
期刊论文数量(32)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
吉田静男, 西田修三, 横尾啓介: "石狩川の密度成層構造と地形,気象,海象-XI"福田水文センター(印刷中). (2004)
Shizuo Yoshida、Shuzo Nishida、Keisuke Yokoo:“石狩川 XI 的密度分层结构和地形、天气和海洋现象”福田水文中心(2004 年)。
- DOI:
- 发表时间:
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- 影响因子:0
- 作者:
- 通讯作者:
S.Yoshida, K.Yokoo, S.Nishida, Y.Nakamichi: "Fukuda Suimon Corp."Stratified Flow Strictures Affected by Topology, Weather and Sea Condition at the Mouth of Ishikari River-IX (in Japanese). 348 (2002)
S.Yoshida、K.Yokoo、S.Nishida、Y.Nakamichi:“Fukuda Suimon Corp.”石狩河口受拓扑、天气和海况影响的分层流限制 - IX(日文)。
- DOI:
- 发表时间:
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- 影响因子:0
- 作者:
- 通讯作者:
吉田静男, 西田修三, 横尾啓介, 中道陽文: "石狩川の密度成層構造と地形,気象,海象-IX"福田水文センター. 348 (2002)
Shizuo Yoshida、Shuzo Nishida、Keisuke Yokoo、Yobumi Nakamichi:“石狩川-IX的密度分层结构和地形、天气和海洋现象”福田水文中心348(2002)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
吉田静男, 西田修三, 横尾啓介, 中道陽文: "石狩川の密度成層構造と地形,気象,海象-X"福田水文センター. 397 (2003)
Shizuo Yoshida、Shuzo Nishida、Keisuke Yokoo、Yobumi Nakamichi:“石狩川X的密度分层结构和地形、天气和海洋现象”福田水文中心397(2003)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
吉田静男, 酉田修三, 横尾啓介: "石狩川の密度成層構造と地形,気象,海象-XI"福田水文センター(印刷中). (2004)
Shizuo Yoshida、Shuzo Torita、Keisuke Yokoo:“石狩川 XI 的密度分层结构和地形、天气和海洋现象”福田水文中心(2004 年)。
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- 影响因子:0
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YOSHIDA Shizuo其他文献
YOSHIDA Shizuo的其他文献
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{{ truncateString('YOSHIDA Shizuo', 18)}}的其他基金
Entrainment Phenomena in a Stratified Flow with Average Velocities and Turbulent Surface Layers
具有平均速度和湍流表面层的分层流中的夹带现象
- 批准号:
09450186 - 财政年份:1997
- 资助金额:
$ 4.35万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
An existence of cold stable vacuolar H^+-ATPase in Plants and its structural properties.
植物冷稳定液泡H^-ATP酶的存在及其结构特性。
- 批准号:
05454012 - 财政年份:1993
- 资助金额:
$ 4.35万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
UNSTEADY FACTORS AFFECTING SALT DIFFUSION IN THE STRATIFIED FLOW SYSTEM AT A RIVER MOUTH
影响河口层流系统盐分扩散的不稳定因素
- 批准号:
04452231 - 财政年份:1992
- 资助金额:
$ 4.35万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Effects of cold-induced dysfunction of vacuoles upon homeostasis in intracellular ionic environment.
寒冷诱导的液泡功能障碍对细胞内离子环境稳态的影响。
- 批准号:
03454005 - 财政年份:1991
- 资助金额:
$ 4.35万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Studies on plasma membrane proteins which are specifically induced by cold acclimation in plants.
植物冷驯化特异性诱导的质膜蛋白的研究。
- 批准号:
01480009 - 财政年份:1989
- 资助金额:
$ 4.35万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Molecular mechanisms of chilling injury and freezing injury
冷害和冻害的分子机制
- 批准号:
62304004 - 财政年份:1987
- 资助金额:
$ 4.35万 - 项目类别:
Grant-in-Aid for Co-operative Research (A)
Time-Space Variations of Hydraulic Parameters and Mixing Processes at the Density interface of River Mouth Flows
河口流密度界面水力参数及混合过程的时空变化
- 批准号:
62460158 - 财政年份:1987
- 资助金额:
$ 4.35万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Studies on deformation mechanisms of regional metamorphic rocks by means of microfabric analyses
区域变质岩变形机制的微结构分析研究
- 批准号:
61420015 - 财政年份:1986
- 资助金额:
$ 4.35万 - 项目类别:
Grant-in-Aid for General Scientific Research (A)
Development of a laser optical cryomicroscope for the study of freeze-preservation of plant gene resources.
开发用于植物基因资源冷冻保存研究的激光光学冷冻显微镜。
- 批准号:
60840020 - 财政年份:1985
- 资助金额:
$ 4.35万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research
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