Deglaciation of East Antarctica Ice Sheet during the Quaternary and its response to the Earth's climatic system

2012 Fiscal Year Final Research Report

• Project/Area Number: 22500991
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geography
• Research Institution: National Institute of Polar Research
• Principal Investigator: SUGANUMA Yusuke 国立極地研究所, 研究教育系, 助教 (70431898)
• Co-Investigator(Kenkyū-buntansha): MIURA Hideki 国立極地研究所, 研究教育系, 助教 (10271496)
• Project Period (FY): 2010 – 2012
• Keywords: 南極氷床 / 古環境復元 / 地形 / 地質学 / 地球システム変動学 / 地球温暖化 / 未来予測 / 第四紀学

Research Abstract

In this study, we reconstruct the precise magnitude and timing of ice sheet retreat at the Sor Rondane Mountains in Dronning Maud Land, East Antarctica, based on detailed geomorphological survey and cosmogenic exposure dating. Our data show ~570 m of ice sheet thinning in this region since early Pleistocene. The most recent deglaciation started at 14 ka, and may continue until today, suggesting that the EAIS of Dronning Maud land is unlikely to be a major contributor to Meltwater Pulse 1A.

Research Products

• [Journal Article] 東ドロンイングモードランド,セール・ロンダーネ山地地学調査隊報告2011-2012(JARE-53) (2013)
  • Author(s): 菅沼悠介,金丸龍夫,大岩根尚,齋田宏明,赤田幸久
  • Journal Title: 南極資料 Pages: 381-433
• [Journal Article] 東ドロンイングモードランド、セール・ロンダーネ山地 地学調査隊報告 2009-2010 (JARE-51) (2013)
  • Author(s): 土屋範芳, 石川正弘, Satish Kumar, 河上哲生, 小島秀康, 海田博司, 三浦英樹, 菅沼悠介、阿部幹雄, 佐々木大輔, 千葉政範, 岡田豊
  • Journal Title: 南極資料 Volume: 56 Pages: 295-379
• [Journal Article] A new sampling technique for surface exposure dating using a portable electric rock cutter (2012)
  • Author(s): Suganuma Y., Miura H., Okuno J.
  • Journal Title: Antarctic Record Volume: 56 Pages: 85-90
  • Peer Reviewed
• [Presentation] Glacial history of Sor Rondane Mountains in Dronning Maud Land, East Antarctica introduced by geomorphology and surface exposure ages (2012)
  • Author(s): Suganuma,Y., Miura,H., Zondervan,A.
  • Organizer: 第3回極域科学シンポジウム 横断セッション「海・陸・氷床から探る後期新生代の南極寒冷圏環境変動」
  • Place of Presentation: 東京
  • Year and Date: 20121100
• [Presentation] 東南極セール・ロンダーネ山地における更新世以降の氷床変動史の復元 (2011)
  • Author(s): 菅沼悠介,三浦英樹,Albert Zondervan
  • Organizer: 日本地質学会118年学術大会
  • Place of Presentation: 茨城
  • Year and Date: 20110900
• [Presentation] Deglaciation history of Sor Rondane Mountains in Dronning Maud Land, East Antarctica: a geomorphologic reconstruction supported by surface exposure age observations (2011)
  • Author(s): Suganuma, Y., Miura, H. Zondervan, A.
  • Organizer: 11th Internationl Symposium on Antarctic earth Sciences
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 20110700
• [Presentation] 地磁気強度を用いた海底堆積物とアイスコアの高精度年代対比手法の確立 (2011)
  • Author(s): 菅沼悠介
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 20110500
• [Presentation] The glacial history of Sor Rondane Mountains in Dronning Maud Land, East Antarctica (2011)
  • Author(s): Suganuma, Y., Miura, H. Zondervan, A.
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 20110500
• [Presentation] Deglaciation history of Sor-Rondane Mountains in Dronning Maud Land (2011)
  • Author(s): Suganuma, Y., Miura, H., Zondervan, A.
  • Organizer: East Antarctica, AMS-12, GNS Science
  • Place of Presentation: Wellington, New Zealand
  • Year and Date: 20110320-25
• [Remarks]
  • URL: http://polaris.nipr.ac.jp/~suganuma/