| Project/Area Number |
01580248
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
自然地理学
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| Research Institution | Chuo University |
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Principal Investigator |
SUZUKI Takasuke Chuo University, Institute of Geosciences, Professor, 理工学部, 教授 (60055168)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Ken'ichi Chuo University, Faculty of Literature, Assistant Professor, 文学部, 助教授 (40129961)
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| Project Period (FY) |
1989 – 1990
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1990: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1989: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Keywords | Slope Evolution / fluvial Terrace Scarps / Geomorphology / Chichibu Basin / Saikawa Hills / Oi river / Slope Decline Rate / Slope Profile |
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| Research Abstract |
Slope profiles were measured with a slope profiler having a unit span of 2 meters on the fluvial bedrock-terrace scarps in the Chichibu Basin and along the Sai and Oi Rivers. The terrace scarps studied range from 2.5 m to 90 m in height, from 7 to 90 degree in mean angle, and from 0.5 ka B. P. to 30 ka B. P. in the scarp age. The bedrocks are Cretaceous and Tertiary sedimentary rocks ranging from 15ﾟ to 90ﾟ in true dip. Most of the profiles were divided into three segments : crstal convex, middle straight and basal concave segments.
The rate of slope decline and the rate of changes in the height ratio of each of the three segments at an arbitrary site and at a given time were formulated in terms of the practically measured and estimated variables such as scarp age, initial height of scarp, retive dip and mechanical properties of bedrock, and climatic condition.
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