| Budget Amount *help |
¥21,060,000 (Direct Cost: ¥16,200,000、Indirect Cost: ¥4,860,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2014: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Outline of Final Research Achievements |
We explored whether certain snow cover characteristics facilitate long travel distances. We dropped about 5.8 cubic meters of rock fragments on 28-m-long slopes covered by snow. At the experiment site, snow falls from November to March, and in the early and late season, freeze-thaw cycles occur; as a result, snow cover conditions evolve depending on meteorological conditions. To simulate erosion of the snow cover by flowing material, we carried out four experiments on these slopes with various snow cover conditions and two slope angles. In two experiments, the flowing materials stopped after short travel distances and just pushed on its lower snow cover. In contrast, in the other two experiments, the flowing materials spread more widely and traveled farther. The H/L ratio of the latter two experiments were smaller than those of the former two experiments. The hard surfaces of the base snow covers in the latter tests formed under freeze-thaw conditions.
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