Chemical characteristics of basal ice near Hamna Icefall, East Antarctica

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概要

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• Debris-laden basal ice is exposed along an ice cliff (about 30m high) near Hamna Icefall, Soya Coast, East Antarctica. The basal ice about 6.8m thick can be divided into an upper part (5.5m) and a lower part (1.3m) based on stratigraphic features. Major dissolved ions of the basal ice are probably composed of eight species (Na^+, K^+, Mg^<2+>, Ca^<2+>, Cl, SO_4^2,NO_3 and HCO_3). Almost all Na^+, K^+, Mg^<2+>, Ca^<2+>, SO_4^2 and HCO_3 in the basal ice are considered to have originated from chemical erosion of rock minerals at the base of the ice sheet. According to a calculation of ion composition, the primary rock mineral dissolved in the basal ice is considered to be carbonate.

• 国立極地研究所の論文

著者

• Watanabe Okitsugu

  National Institute of Polar Research, Research Organization of Information and Systems

• Igarashi Makoto

  National Institute of Polar Research, Research Organization of Information and Systems

• Yamada Tomomi

  The Institute Of Low Temperature Science Hokkaido University

• Iizuka Yoshinori

  Institute Of Low Temperature Science Pan-okhotsk Research Center Hokkaido University

• Shiraiwa T

  Disaster Prevention Research Institute Kyoto University

• IGARASHI Makoto

  RIKEN

• Watanabe O

  National Institute Of Polar Research Research Organization Of Information And Systems

• Watanabe Okitsugu

  National Institute Of Polar Research

• Saito T

  Institute Of Low Temperature Science Hokkaido University

• Iizuka Yoshinori

  Department of General Education, Yuge National College of Maritime Technology

• Watanabe Okitsusgu

  National Institute of Polar Research

• Takahashi Shuhei

  Department Of Civil Engineering Kitami Institute Of Technology

• SHIRAIWA Takayuki

  The Institute of Low Temperature Science, Hokkaido University

• NARUSE Renji

  The Institute of Low Temperature Science, Hokkaido University

• Yamanouchi Takashi

  National Institute Of Polar Research Organization Of Information And Systems

• Naruse Reij

  Institute Of Low Temperature Science Hokkaido University

• Naruse Reiji

  Institute Of Low Temperature Science Hokkaido University

• Naruse Renji

  The Institute Of Low Temperature Science Hokkaido University

• Yamada T

  Geosystems Inc.

• Igarashi Makoto

  National Institute Of Polar Research

• Suzuki T

  Department Of Earth And Environmental Sciences Faculty Of Science Yamagata University

• Igarashi Makoto

  National Inst. Of Polar Res. 10-3 Midori-cho Tachikawa-shi Tokyo 190-8518 Jpn

• Iizuka Y

  Department Of General Education Yuge National College Of Maritime Technology

• Igarashi M

  National Institute Of Polar Research

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