Chemical characteristics of basal ice near Hamna Icefall, East Antarctica

元データ 国立極地研究所

概要

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.

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
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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