2009 Fiscal Year Final Research Report
Geological engineering study of slope in accretionary prism area, Shikoku-The mountains in Shikoku split initially from mountain ridges-
| Project/Area Number |
18540456
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geology
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| Research Institution | Kochi University |
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Principal Investigator |
YOKOYAMA Shunji Kochi University, 教育研究部自然科学系, 教授 (20325400)
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| Co-Investigator(Kenkyū-buntansha) |
KASHIWAGI Kenji 富山大学, 理工学研究部(理学), 准教授 (90422625)
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| Project Period (FY) |
2006 – 2009
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| Keywords | 斜面地質工学 / 硬岩 / 玄武岩 / 付加体地すべり / 四国山地 / 南海地震 / 地震性ノンテクトニック断層 / 線状凹地 |
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| Research Abstract |
In Shikoku mountains, hard rock of accretionary prism slips down. The mountain ridges, everywhere, have split by the motion of Nankai earthquake which occurs once in about 100 years. Rainwater flowed into the crack deteriorates bed of specific lithofacies, and the deteriorated bed is bred up slip surface of juvenile landslide. The landslide of accretionary prism begins to slip from the crack on the mountain ridge and continues to move without erosion of the toe.
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