Japan STA Program: Subsurface Flow in Relation to Landslide Initiation

日本 STA 计划：与滑坡引发相关的地下流动

• 批准号: 9022653
• 负责人: Roy Sidle
• 金额: $ 1.01万
• 依托单位: Forest Service Inter Mountain Forest & Range Experiment Sta
• 依托单位国家: 美国
• 项目类别: Interagency Agreement
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-01-15 至 1992-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9022653&HistoricalAwards=false
• 关键词: Japan; STA; Program; Subsurface; Flow

This award will provide supplementary support for a long-term research stay by Dr. Roy Sidle of the USDA Forest Service to conduct collaborative research with Dr. Makoto Tani of the Forestry and Forest Products Research Institute in Tsukuba, Japan. They will investigate how soil pipes in forest hillsides influence the subsurface water flow regime, and thus affect initiation of landslides. Soil pipes and macropores are recognized to be important conducts for subsurface water during intense rainstorms. The rapid transport of large quantities of water into unstable soil mantles during storms can create zones of water pressure buildup, resulting in landslide initiation. Existing models of subsurface flow and groundwater response do not adequately address the influence of pipeflow. The research work of Dr. Tani's lab on the effects of soil physical properties on groundwater accretion will complement Dr. Sidle's research background on subsurface flow processes and landslide modelling.

该奖项将为美国农业部林业局罗伊·西德尔博士与日本筑波林业和林产品研究所的Makoto Tani博士进行合作研究的长期研究提供补充支持。他们将研究森林山坡上的土壤管道如何影响地下水流动状况，从而影响山体滑坡的发生。在强暴雨期间，土管和大孔隙被认为是地下水的重要传输途径。在风暴期间，大量水快速输送到不稳定的土壤覆盖层中，可能会产生水压积聚区，从而引发滑坡。现有的地下水流和地下水响应模型不能充分考虑管流的影响。塔尼博士的实验室关于土壤物理性质对地下水吸收的影响的研究工作将补充西德尔博士在地下水流过程和滑坡建模方面的研究背景。