Geomorphological characteristics and formation factors of V-shaped valleys in East Asian mountains
Project/Area Number |
23501237
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Geography
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Research Institution | The University of Tokyo |
Principal Investigator |
OGUCHI Takashi 東京大学, 空間情報科学研究センター, 教授 (80221852)
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Co-Investigator(Renkei-kenkyūsha) |
HAYAKAWA Yuichi 東京大学, 空間情報科学研究センター, 准教授 (70549443)
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Project Period (FY) |
2011-04-28 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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Keywords | 谷 / 地形 / デジタル標高モデル / 地理情報システム / 斜面崩壊 / 土砂流出 / 侵食 / 山地 / 日本 / 台湾 |
Outline of Final Research Achievements |
The most typical landform type in steep Japanese mountains is V-shaped valleys. However, their detailed geomorphological characteristics have rarely been investigated, probably because they occur very commonly. This study utilized digital elevation models and geographical information systems to quantitatively and statistically analyze cross sections of valleys including V-shaped ones. Based on the results, geomorphological characteristics of valleys and their controlling factors were discussed. In addition, valley-forming processes such as slope failure and sediment yields from valleys were investigated. The study areas included Japan, Taiwan, southeastern China, and the western Arabian Peninsula.
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Report
(5 results)
Research Products
(45 results)
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[Journal Article] Differentiation of shallow and deep-seated landslides using support vector machines: a case study of the Chuetsu area, Japan2015
Author(s)
Dou, J., Paudel, U., Oguchi, T., Uchiyama, S., Hayakawa, Y.S.
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Journal Title
Terrestrial, Atmospheric and Oceanic Sciences
Volume: 印刷中
Issue: 2-2
Pages: 227-239
DOI
Related Report
Peer Reviewed
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[Journal Article] Geomorphic imprints of repeated tsunami waves in a coastal valley in northeastern Japan.2015
Author(s)
Hayakawa, Y.S., Oguchi, T., Saito, H., Kobayashi, A., Baker, V.R., Pelletier, J.D., McGuire, L.A., Komatsu, G., Goto, K.
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Journal Title
Geomorphology
Volume: 印刷中
Pages: 3-10
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Effects of tsunami wave erosion on natural landscapes: Examples from the 2011 Tohoku-oki Tsunami.2014
Author(s)
Komatsu, G., Goto, K., Baker, V.R., Oguchi, T., Hayakawa, Y.S., Saito, H., Pelletier, J.D., Mcguire, L., Iijima, Y.
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Journal Title
Advances in Natural and Technological Hazards Research
Volume: 35
Pages: 243-253
DOI
ISBN
9789400772687, 9789400772694
Related Report
Peer Reviewed / Open Access
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[Presentation] Morphological analysis of an uplifted coastal terrace using high definition topographic data: possible erosion by high waves of tsunamis.2014
Author(s)
Hayakawa, Y.S., Obanawa, H., Wassmer, P., Oguchi, T., Saito, H.
Organizer
Geological Society of America Annual Meeting
Place of Presentation
Vancouver, Canada
Year and Date
2014-10-19 – 2014-10-22
Related Report
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[Presentation] Rainfall conditions, typhoon frequency, and contemporary landslide erosion in Japan2014
Author(s)
Saito, H., Korup, O., Uchida, T., Hayashi, S., Oguchi, T.
Organizer
Asia Oceania Geosciences Society 11th Annual Meeting
Place of Presentation
Sapporo, Hokkaido, Japan
Year and Date
2014-07-28
Related Report
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[Presentation] Using back-propagation networks to predict landslides based on an airborne LiDAR DEM2013
Author(s)
Dou, J., Oguchi, T., Uchiyama S., Hayakawa, S. Y., Doshida, S., Saito, H.
Organizer
JpGU International Symposium 2013
Place of Presentation
Makuhari, Japan
Related Report
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[Presentation] Application of support vector machines to predict landslides based on Lidar DEM: a case study from Chuetsu earthquake, in Japan2013
Author(s)
Dou, J., Oguchi, T., Hayakawa, S. Y., Uchiyama, S., Saito, H.
Organizer
2013 International Conference on Earth Observations and Societal Impacts
Place of Presentation
Tainan, Taiwan
Related Report
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[Presentation] Back propagation (BP) model optimized by genetic algorithms (GA) for predicting landslides.2013
Author(s)
Dou, J., Oguchi, T., Uchiyama, S., Doshida, S., Saito, H.
Organizer
International Geographical Uniton Kyoto Regional Conference
Place of Presentation
Kyoto, Japan
Related Report
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[Presentation] Landslide magnitude and frequency related to rainfall conditions in Japan.2013
Author(s)
Saito, H., Korup, O., Uchida, T., Hayashi, S., Oguchi, T.
Organizer
International Geographical Uniton Kyoto Regional Conference
Place of Presentation
Kyoto, Japan
Related Report
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