パタゴニアの氷河研究2006-2009

• 安仁屋 政武

  University of Tsukuba

• SKVARCA Pedro

  Instituto Antártico Argentino

• 杉山 慎

  Institute of Low Temperature Science, Hokkaido University

• 青木 賢人

  College of Natural Sciences, Kanazawa University

• 松元 高峰

  Centro de Investigación en Ecosistemas de la Patagonia

• 安間 了

  Graduate School of Life and Environmental Sciences, University of Tsukuba

• 内藤 望

  Department of Global Environment Studies, Hiroshima Institute of Technology

• 榎本 浩之

  Department of Civil Engineering, Kitami Institute of Technology

• 堀 和明

  Department of Environmental Science and Technology, Meijo University

• MARINSEK Sebastián

  Instituto Antártico Argentino

• 紺屋 恵子

  Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology

• 縫村 隆行

  Graduate Student, Graduate School of Environmental Studies, Nagoya University

• 津滝 俊

  Graduate Student, Graduate School of Earth Environmental Sciences, Hokkaido University

• 刀根 健太

  Graduate Student, Graduate School of Earth Environmental Sciences, Hokkaido University

• BARCAZA Gonzalo

  Dirección de Aguas, Ministerio de Obras Públicas

書誌事項

タイトル別名

• 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
• Glaciological Research Project in Patagonia 2006-2009
• Studies at Glaciar Perito Moreno, Hielo Patagónico Sur, in area of Hielo Patagónico Norte, and along the Pacific Coast

抄録

The Glaciological Research Project in Patagonia (GRPP) 2006-2009 was carried out with several objectives at Glaciar Perito Moreno of the Hielo Patagónico Sur (HPS), in the area of the Hielo Patagónico Norte (HPN) and along the Pacific coast. At Glaciar Perito Moreno, hot water drilling was carried out at about 5km upstream from the terminus, reaching the glacier bottom at ca. 515m, in order to monitor subglacial water pressure. Good positive correlations among air temperature, subglacial water pressure and glacier flow speed were found. Based on ¹⁴C dating of tree and organic samples, it is proposed that Glaciar Perito Moreno made two Little Ice Age (LIA) advances at AD1600-1700 and ca. 130-100y BP (AD1820-50). Fan deltas located at the mouth of big rivers around Lago General Carrera (Buenos Aires) and Lago Cochrane (Pueyrredon), in the area east of the HPN, were investigated to elucidate their development. The variations of 21 outlet glaciers of the HPN elucidated from aerial surveys for 2004/05-2008/09 revealed an areal loss of 8.67km² in four years. A general slowing down of retreats was observed with a few exceptions. Meteorological measurements at Glaciar Exploradores of the HPN from 2005 to 2009 indicate that air temperature ranged from 17.4°C to -10.5°C. The total annual precipitation was about 3000mm. Glacier surface melt was observed at two spots. Sediment and water discharges from the glacier showed that while water discharge fluctuated a lot, suspended sediment concentration was rather stable in summer. A single channel seismic profiling during the JAMSTEC MR08-06 cruise identified a probable submerged moraine formed before the last glacial maximum (LGM) in the Golfo de Penas, south of Taitao Peninsula. Piston coring along the Chilean coast further indicates that ice-rafted debris recorded the LGM and earlier Late Pleistocene events of the glacial advance.

収録刊行物

• 氷河情報センター

  氷河情報センター 29 1-17, 2011

  公益社団法人 日本雪氷学会

キーワード

• パタゴニア氷原
• ペリート・モレーノ氷河
• 氷河変動
• エクスプロラドーレス氷河
• Mirai08-06航海

詳細情報

• CRID: 1390282679644052096
• NII論文ID: 130000723658
• DOI: 10.5331/bgr.29.1
• ISSN: 18848044
• ISSN: 13453807
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可