Verification of a hypothesis and development of a numerical model on feedback mechanism between variation of calving glaciers and proglacial lakes

2011 Fiscal Year Final Research Report

• Project/Area Number: 20540430
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Hiroshima Institute of Technology
• Principal Investigator: NAITO Nozomu 広島工業大学, 環境学部, 教授 (90368762)
• Project Period (FY): 2008 – 2011
• Keywords: 氷河変動 / カービング / 氷河湖 / 氷河流動 / フィードバック

Research Abstract

Valuable observational data were obtained in order to verify a hypothesis that a positive feedback can operate between variation of glacier thickness and calving rate into a proglacial lake in case of a lake-calving glacier. In concrete terms, glacier thinning rate, terminal flow speed, water level of proglacial lake and so on were repeatedly measured at Glaciar Perito Moreno in the Patagonia Icefield, South America. In addition, glacier thinning was surveyed on two glaciers and size change was detected through repeat photos on 18 glaciers and glacial lakes, in the Bhutan Himalayas.

Research Products

• [Journal Article] Recent glacier shrinkages in the Lunana region, Bhutan Himalayas (2012)
  • Author(s): Naito, N., 他7名(1番目)
  • Journal Title: Global Environmental Research Volume: Vol.16, No.1(in press)
  • Peer Reviewed
• [Journal Article] Ice speed of a calving glacier modulated by small fluctuation in basal water pressure (2011)
  • Author(s): Sugiyama, S., N. Naito, 他6名(3番目)
  • Journal Title: Nature Geoscience Volume: Vol.4, No.9 Pages: 597-600
  • DOI: doi:10.1038/ngeo1218
  • Peer Reviewed
• [Journal Article] Glaciological research project in Patagonia 2006-2009 : Studies at Glaciar Perito Moreno, Hielo Patagonico Sur, in area of Hielo Patagonico Norte and along the Pacific Coast (2011)
  • Author(s): Aniya, M., N. Naito, 他13名(7番目)
  • Journal Title: Bulletin of Glaciological Research Volume: Vol.29 Pages: 1-17
  • URL: https://www.jstage.jst.go.jp/article/bgr/29/0/29_0_1/_pdf
  • Peer Reviewed
• [Journal Article] Hot-water drilling at Glaciar Perito Moreno, Southern Patagonia Icefield (2010)
  • Author(s): Sugiyama, S., N. Naito, 他6名(3番目)
  • Journal Title: Bulletin of Glaciological Research Volume: Vol.28 Pages: 27-32
  • URL: https://www.jstage.jst.go.jp/article/bgr/28/0/28_0_27/_pdf
  • Peer Reviewed
• [Presentation] ヒマラヤにおける氷河変動と氷河湖決壊洪水 (2011)
  • Author(s): 内藤望
  • Organizer: 電気・情報関連学会中国支部連合大会
  • Place of Presentation: 広島市
  • Year and Date: 2011-10-22
• [Presentation] 2010年秋期ブータン・ヒマラヤにおける小型氷河の変動調査報告 (2011)
  • Author(s): 内藤望, 他5名(1番目)
  • Organizer: 雪氷研究大会(2011・長岡)
  • Place of Presentation: 長岡市
  • Year and Date: 2011-09-20
• [Presentation] Calving glacier dynamics controlled by subglacial water pressure close to ice overburden pressure in Glaciar Perito Moreno, Patagonia (2011)
  • Author(s): Sugiyama, S., N. Naito, 他6名(3番目)
  • Organizer: EGU General Assembly 2011
  • Place of Presentation: Vienna, Austria
  • Year and Date: 2011-04-07
• [Presentation] ヒマラヤの氷河縮小と氷河湖決壊洪水 (2009)
  • Author(s): 内藤望
  • Organizer: 大気環境学会・日本水環境学会・廃棄物資源循環学会中国四国支部合同講演会
  • Place of Presentation: 広島市
  • Year and Date: 2009-06-26
• [Presentation] 南パタゴニア氷原ペリート・モレノ氷河動態観測-2007, 2008年観測報告- (2008)
  • Author(s): 内藤望, 榎本浩之, 他6名(1番目)
  • Organizer: 雪氷研究大会(2008・東京)
  • Place of Presentation: 東京都文京区
  • Year and Date: 2008-09-24
• [Book] Summer accumulation type glaciers. In "Encyclopedia of Snow, Ice and Glaciers" ed. (2011)
  • Author(s): Naito, N. V. P. Singh, P. Singh and U. K. Haristha
  • Total Pages: 1107-1108
  • Publisher: Springer
• [Remarks] 中国新聞,「氷河縮小世界に警鐘」(研究紹介), 2012年4月2日.
• [Remarks] 読売新聞(中部支社版),「ヒマラヤ解ける氷河」(研究紹介), 2012年2月14日.
• [Remarks] KUENSEL,「Visual glacier shrinkages in the decades」(ブータン王国の現地新聞に研究成果解説文を寄稿), 2012年2月11日.
• [Remarks] 内藤望:地球温暖化に伴う氷河の変化.インテレクチャル・カフェ広島(産官学連携講演会), 2011年12月13日,広島市.
• [Remarks] 内藤望:地球温暖化と氷河.はつかいち環境講座(一般市民向公開講座), 2010年12月16日,廿日市市.