The role of bedrock groundwater on runoff and landslide initiation

基岩地下水对径流和滑坡引发的作用

• 批准号: 11660146
• 负责人: ONDA Yuichi
• 金额: $ 2.24万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11660146/
• 关键词: hillslope hydrology; groundwater flow; landslide; shale; granite; steep landform; delayed runoff peak; bedrock groundwater; 深層崩壊; 土壌水; 表層崩壊; 深層地下水; 岩盤湧水; 2次ピーク; 砂岩; チャート

To examine runoff generation processes in very steep terrain underlain by relatively unweathered granite and shale, several small watersheds were monitored ; two are in shale and two are in granite in Ina, two are in Shale in Kanuma, central Japan. The shale catchments had distinctly different runoff responses to the same storm event, whereas the two granite catchments had similar runoff response ; high peak runoff coincides with rainfall peak. Most of the storm runoff water is defined as 'old water', in shale basins, and more than half in the granite basin. Soil water percolated vertically downward into bedrock even during storm event in shale watershed, whereas subsurface storm flow parallel to slope is observed in granite watersheds. These data suggest that subsurface storm flow is dominant even in very steep mountains, and subsurface flow through soil mantle is dominant in granite basins, whereas bedrock flow is dominant in shale basins.

为了研究相对未风化的花岗岩和页岩覆盖的非常陡峭的地形上的径流生成过程，对几个小流域进行了监测；其中两个位于页岩中，两个位于稻田的花岗岩中，两个位于日本中部卡努马的页岩中。页岩集水区对同一暴雨事件的径流响应明显不同，而两个花岗岩集水区的径流响应相似，峰值径流峰值与降雨峰值重合。大部分暴雨径流水在页岩盆地被定义为“老水”，在花岗岩盆地中超过一半。在泥页岩流域，土壤水分即使在暴雨过程中也垂直向下渗入基岩，而在花岗岩流域观测到平行于坡面的地下暴雨流。这些数据表明，即使在非常陡峭的山区，地下风暴流也占主导地位，花岗岩盆地以穿过土壤地幔的地下流为主，而页岩盆地以基岩流为主。

项目成果

Onda, Y., Komatsu, Y., Tsujimura, M., Fujihara, J.: "The role of subsurface runoff through bedrock on storm flow generation,"Hydrological Processes. 15. 1693-1706. (2001)

Onda, Y.、Komatsu, Y.、Tsujimura, M.、Fujihara, J.：“通过基岩的地下径流对暴雨流生成的作用”，水文过程。

Onda,Y., Komatsu,Y.: "The Delayed Run off Hydrograph: a Possibility for Bedrock Groundwater Outflow"Journal of Japanese Association of Hydrological Sciences. 31(2). 49-58 (2001)

Onda，Y.，Komatsu，Y.：“延迟径流水文：基岩地下水流出的可能性”日本水文科学协会杂志。

Ogawa, T., Matsumoto, C., Takenaka, C., and Tezuka, T.: "Effect of Ca on Al-induced activation of antioxidant Enzymes in the needles of Hinoki Cypress (Chamaecyparis obtusa)"Journal of Forest Research. 5. 81-85 (2000)

Okawa, T.、Matsumoto, C.、Takenaka, C. 和 Tezuka, T.：“Ca 对铝诱导的扁柏 (Chamaecyparis obtusa) 针叶抗氧化酶活化的影响”森林研究杂志。

Onda,Y: "The role of subsurface runoff through bedrock on storm flow generation"Hydrological Processes. (In press).

Onda，Y：“通过基岩的地下径流对暴雨流生成的作用”水文过程。

Tsujimura,M.,Onda,Y.,Fujiwara,J.and Ito,J.: "Hydrometric and tracer approaches to investigate rainfall-runoff processes in mountainous basins with different geology"International Association of Hydrological Sciences Publication. 258. 159-166 (1999)

Tsujimura,M.、Onda,Y.、Fujiwara,J. 和 Ito,J.：“水文测量和示踪剂方法研究不同地质山区盆地的降雨径流过程”国际水文科学协会出版物。