Evaluation of megafans in relation to definition of alluvial fans

2009 Fiscal Year Final Research Report

• Project/Area Number: 19500879
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geography
• Research Institution: Saitama University
• Principal Investigator: SAITO Kyoji Saitama University, 教育学部, 教授 (60170495)
• Project Period (FY): 2007 – 2009
• Keywords: 自然現象観測・予測 / 地形学 / 洪水 / 土砂災害 / 自然災害

Research Abstract

The Japanese common knowledge that fluvial fans are alluvial fans was suspected. But I emphasized that fluvial fans are alluvial fans, and the knowledge is recognized by researchers on alluvial fans at the Alluvial Fans 2007 conference in Canada. As far as megafans are concerned, the values of drainage basin areas and fan areas are located on two extended lines of extraordinarily large alluvial fans in General Valley of Costa Rica and in San Joaquin Valley of USA. When the reason of the excess is clarified, it is possible to discriminate between megafans and alluvial fans.

Research Products

• [Journal Article] 東アジアの地表プロセスと扇状地形成 (2010)
  • Author(s): 斉藤享治
  • Journal Title: 学術の動向 15(2) Pages: 18-22
• [Journal Article] 太平洋西縁変動帯における扇状地の分布条件 (2010)
  • Author(s): 斉藤享治
  • Journal Title: 埼玉大学紀要 (教育学部) 59(1)別冊1 Pages: 85-98
• [Journal Article] ニュージーランドにおける扇状地の形成条件 (2009)
  • Author(s): 斉藤享治
  • Journal Title: 地理学研究報告 (埼玉大学教育学部) 29 Pages: 1-12
• [Journal Article] Characteristics of mega-fans in the Gran Chaco of South America (2009)
  • Author(s): Saito, K.
  • Journal Title: Occasional Paper of Department of Geography of Saitama University 29 Pages: 26-30
• [Journal Article] Constant-slope alluvial fans and source basins in Taiwan (2009)
  • Author(s): Lin, Z, Oguchi, T., Chen, Y-G., Saito, K.
  • Journal Title: Geology 37 Pages: 787-790
  • Peer Reviewed
• [Journal Article] ヴェズヴィオ火山・大山火山北麓の地形と集落 (2008)
  • Author(s): 斉藤享治
  • Journal Title: 地理学研究報告 (埼玉大学教育学部) 28 Pages: 25-36
• [Journal Article] Characteristics of mega-fans on the basis of relationships between drainage-basin areas and alluvial-fan areas (2008)
  • Author(s): Saito, K.
  • Journal Title: Occasional Paper of Department of Geography of Saitama University 28 Pages: 37-44
• [Journal Article] GIS analysis of depositional slope change at alluvial-fan toes in Japan and the American Southwest (2008)
  • Author(s): Hashimoto, A., Oguchi, T., Hayakawa, Y., Lin, Z., Saito, K, Wasklewicz, T. A.
  • Journal Title: Geomorphology 100 Pages: 120-130
  • Peer Reviewed
• [Journal Article] ニュージーランドにおける扇状地の分布と形態 (2007)
  • Author(s): 斉藤享治
  • Journal Title: 地理学研究報告 (埼玉大学教育学部) 27 Pages: 1-22
• [Journal Article] Lower limit of alluvial-fan slope in Japan (2007)
  • Author(s): Saito, K., Oguchi, T.
  • Journal Title: Occasional Paper of Department of Geography of Saitama University 27 Pages: 36-45
• [Journal Article] Long-term sediment supply in New Zealand based on alluvial fan areas (2007)
  • Author(s): Saito, K.
  • Journal Title: Occasional Paper of Department of Geography of Saitama University 27 Pages: 46-49
• [Presentation] Characteristics of megafans in the Gran Chaco of South America (2009)
  • Author(s): Saito, K.
  • Organizer: 6th International Workshop on Present Earth Surface Processes and Historical Environmental Changes in East Asia
  • Place of Presentation: Howard International House Taipei (台湾, 台北)
  • Year and Date: 2009-09-25
• [Presentation] Characteristics of mega-fans on the basis of relationships between drainage-basin areas and alluvial-fan areas (2008)
  • Author(s): Saito, K.
  • Organizer: 5th International Workshop on Present Earth Surface Processes and Historical Environmental Changes in East Asia
  • Place of Presentation: Cremona Hall (函館市)
  • Year and Date: 2008-10-08
• [Presentation] Characteristics of alluvial fan slope in New Zealand (2008)
  • Author(s): Saito, K.
  • Organizer: Taiwan and Japan Joint Symposium on Geomorphological Hazards and Management
  • Place of Presentation: 国立台湾大学 (台湾, 台北)
  • Year and Date: 2008-03-17
• [Presentation] Long-term sediment supply in New Zealand based on alluvial fan areas (2007)
  • Author(s): Saito, K.
  • Organizer: 4th International Workshop on Present Earth Surface Processes and Historical Environmental Changes in East Asia
  • Place of Presentation: Ramada Plaza Nanjing (中国, 南京)
  • Year and Date: 2007-09-18
• [Presentation] Lower limit of alluvial fan slope in Japan (2007)
  • Author(s): Saito, K., Oguchi, T.
  • Organizer: Alluvial fans 2007
  • Place of Presentation: Banf Park Lodge (カナダ, バンフ)
  • Year and Date: 2007-06-18
• [Remarks] 埼玉大学研究者総覧 (斉藤享治)
  • URL: http://sucra-rd.saitama-u.ac.jp/search/profile.do?id=HNkpumyC