| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
The present study investigated the physical mechanisms generating “scale dependency” and “spatial representativeness” in rainfall-runoff processes. Toward the goal, we firstly developed a methodology for identifying and modeling dominant rainfall-runoff processes based on discharge data alone. Then we applied this methodology for discharge data of 148 monitoring points in 97 watersheds in Japan and the United States. The results showed that quickest runoff process disappears only in larger continental watersheds. Although we investigated how the “spatial representativeness” appear in rainfall-runoff processes, we have not obtained any clear mechanisms behind it yet. Our additional study revealed climatic effects dominates in rainfall-runoff processes than scale effects.
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