Measurement of soil characteristics controlling runoff processes and model development

控制径流过程的土壤特性测量和模型开发

基本信息

  • 批准号:
    14350267
  • 负责人:
  • 金额:
    $ 4.74万
  • 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:
    2002
  • 资助国家:
    日本
  • 起止时间:
    2002 至 2004
  • 项目状态:
    已结题

项目摘要

1.Estimation of soil hydraulic properties based on the investigation of soil structuresWe develop a new method to estimate pore size distributions from microstructures of the soils. The microstructures are numerically generated by the distinct element method(DEM), which was originally proposed to describe rock block movement (Cundall and Strack, 1979). The distinct element method simulates how a group of discrete particles move collectively by tracing each particle on the basis of equation of motion. We use this method to pack soil particles with various radius in specific volume in random manner, and repeat this procedure to evaluate pore size distributions of soil packages.2.Development and applications of hydrological models incorporating soil propertiesWe developed several hydrological models which incorporate soil physical properties and applied to study catchments. First of all, we developed a flow routing model for forest hillslopes, on the basis of physical mechanics of water f … More low on and/or beneath the hillslope surface (Mouri et al. (2003), Tachikawa (2004)). Mouri et al.(2003) developed an algorithm to predict dynamic behavior of water and sediment in the basin scale. In their algorithm, a basin is divided into a number of hillslopes, and a kinematic wave model incorporating soil characteristics is applied to each hillslope to predict water and sediment movement. Tachikawa et al.(2004) developed a stage-discharge relationship equation incorporating saturated-unsaturated flow mechanism of hillslopes. This equation is able to describe a wide range of flow patterns from dry to wet periods. Secondly, we developed a soil runoff model based on water flow models which incorporate soil physical characteristics (Ichikawa et al.(2003), Ichikawa et al.(2003)). In this model, rate of soil erosion is calculated using friction velocity, which is determined from overland flow depth. Thirdly, we developed a coupled model of two dimensional shallow surface water flow and one dimensional saturated-unsaturated subsurface flow to precisely predict micro physics of rainfall-runoff processes, by incorporating soil hydraulic properties and micro topography of soil surface. Less
1.在土壤结构调查的基础上估算土壤水力性质我们发展了一种根据土壤微观结构估算土壤孔隙分布的新方法。微结构是由离散单元法(DEM)数值生成的,DEM最初是用来描述岩石块体运动的(Cundall和Strack,1979)。离散单元法通过根据运动方程追踪每个粒子来模拟一组离散粒子的集体运动。我们使用这种方法以随机的方式将不同半径的土壤颗粒在比体积中包装,并重复这个过程来评估土壤包装的孔隙分布。2.考虑土壤性质的水文模型的发展和应用我们建立了几个考虑土壤物理性质的水文模型,并应用于流域研究。首先,在水的物理力学基础上,建立了森林坡面的径流模型。在此基础上,建立了基于…的森林坡面径流模型山坡表面更低和/或更低(Mouri等人)。(2003年)、立川(2004年))。Mouri等人(2003)开发了一种算法来预测流域尺度上的水和泥沙的动态行为。在他们的算法中,将一个盆地划分为多个山坡,并对每个山坡应用包含土壤特性的运动学波浪模型来预测水和泥沙的运动。Tchikawa等人(2004)建立了包含坡面饱和-非饱和水流机制的水位-流量关系方程。该方程能够描述从枯水期到丰水期的各种流型。其次,我们基于包含土壤物理特性的水流模型(Ichikawa等人(2003),Ichikawa等人(2003))发展了一个土壤径流模型。在该模型中,土壤侵蚀速率是由坡面水流深度确定的摩阻速度来计算的。第三,将土壤水力特性与地表微地形相结合,建立了二维浅层水流与一维饱和-非饱和地下水流耦合模型,用于精确预报降雨径流过程的微观物理过程。较少

项目成果

期刊论文数量(18)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Development of distributed red soil runoff model using radar data
利用雷达数据开发分布式红壤径流模型
Modeling of water and sediment dynamic in the basin scale and its application to the actual basin
流域尺度水沙动态建模及其在实际流域中的应用
飽和不飽和流れの機構を導入した流量流積 関係式の開発
开发了引入饱和和非饱和流动机理的流量乘积关系表达式
Development of distributed red soil runoff model for Okinawa region
冲绳地区分布式红壤径流模型的开发
Development of stage-discharge relationship equation incorporating saturated-unsaturated flow mechanism
结合饱和-非饱和流动机制的阶段-流量关系方程的发展
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SHIIBA Michiharu其他文献

SHIIBA Michiharu的其他文献

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{{ truncateString('SHIIBA Michiharu', 18)}}的其他基金

Development of integrated common base environment for hydraulic-hydrologic modeling
水文水文建模集成公共基础环境的开发
  • 批准号:
    20246082
  • 财政年份:
    2008
  • 资助金额:
    $ 4.74万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Study on real-time flood tovecasting method by distributed runoff model
分布式径流模型实时洪水预报方法研究
  • 批准号:
    11650526
  • 财政年份:
    1999
  • 资助金额:
    $ 4.74万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of hydrological data base and its sharing through camputer network
水文数据库的开发及其校园网络共享
  • 批准号:
    10555174
  • 财政年份:
    1998
  • 资助金额:
    $ 4.74万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Modeling the impact of human activity on water cycle and its incorporation to water cycle model
模拟人类活动对水循环的影响并将其纳入水循环模型
  • 批准号:
    08650605
  • 财政年份:
    1996
  • 资助金额:
    $ 4.74万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of a macro scale hydrological model based on grid lumping of watershed characteristics
基于流域特征网格集总的宏观水文模型的开发
  • 批准号:
    05555145
  • 财政年份:
    1993
  • 资助金额:
    $ 4.74万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B)

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城市造林建设前后土壤特征
  • 批准号:
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RAPID: Collecting critical data for advancing our understanding of wildfire impacts on soil characteristics and research on post-wildfire compound hazards
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燃烧对为加里橡树草甸生态系统中的本土植物建立生态适宜的土壤特性的影响
  • 批准号:
    542749-2019
  • 财政年份:
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外来植物对海洋岛屿的入侵:生态系统中植物养分利用特征与土壤特征之间的相互作用
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    19H02978
  • 财政年份:
    2019
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Soil colour spectra of prehistoric pit fillings as a new analytical tool to measure changing soil characteristics over time on a regional scale
史前坑填土的土壤色谱作为一种新的分析工具,用于测量区域范围内随时间变化的土壤特征
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    $ 4.74万
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    Research Grants
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大规模耕作侵蚀及其对土壤特征和农药归宿过程的影响
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大规模耕作侵蚀及其对土壤特征和农药归宿过程的影响
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    246185-2001
  • 财政年份:
    2002
  • 资助金额:
    $ 4.74万
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    Strategic Projects - Group
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大规模耕作侵蚀及其对土壤特征和农药归宿过程的影响
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    246185-2001
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  • 项目类别:
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