Regional distribution of chemical tracers in snow cover along the route from S16 to Dome Fuji Station, east Dronning Maud Land, Antarctica

元データ 国立極地研究所

概要

We show and discuss the regional distributions of Cl^-, Na^+, SO_4^2,NO_3 and ^7Be concentrations in snow cover along the route from S16 to Dome Fuji Station in east Dronning Maud Land, Antarctica. The concentrations of Cl and Na^+ at the coast exponentially decreased with distance from the coast up to 200km inland. Between 200-1000km inland, the concentrations of Na^+ were nearly constant. On the other hand, the concentrations of Cl increased with distance beyond 750km inland. Furthermore, the contribution factors between Cl and Na^+ decreased and the Cl/Na^+ ratio and the nssCl^-/Cl^- ratio increased toward the interior of the continent. These results indicate that sea salt aerosols are transported from the coastal region toward the inland region of the Antarctic continent, and that a source of Cl other than sea salt exists in the inland plateau of Antarctica. The concentrations of SO_4^2,NO_3 and ^7Be in snow were relatively high in the coastal region and the inland plateau region compared with those in the katabatic-wind region.

著者

Watanabe Okitsugu National Institute of Polar Research, Research Organization of Information and Systems
Kamiyama Kokichi National Institute of Polar Research, Research Organization of Information and Systems
Furukawa Teruo National Institute of Polar Research
Kawada Kunio Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
Kawamura Kenji Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
Matsuoka Kenichi Institute of Low Temperature Science, Hokkaido University
Iizuka Yoshinori The Graduate University for Advanced Studies
古川 晶雄 National Institute Of Polar Research Research Organization Of Information And Systems
Matsuoka Kenichi Institute Of Low Tempereture Science Hokkaido University
Matsuoka Kenichi Institute Of Low Temperature Science Hokkaido University
Shiraiwa T Disaster Prevention Research Institute Kyoto University
Suzuki Toshitaka Yamagata University
Watanabe O National Institute Of Polar Research Research Organization Of Information And Systems
Watanabe Okitsugu National Institute Of Polar Research
Kamiyama K National Institute Of Polar Research Research Organization Of Information And Systems
Kamiyama Kokichi National Institute Of Polar Research
Saito T Institute Of Low Temperature Science Hokkaido University
Kawamura K Center For Atmospheric And Oceanic Studies Tohoku University
Kawada K Toyama Univ. Toyama
Watanabe Okitsusgu National Institute of Polar Research
Takahashi Shuhei Department Of Civil Engineering Kitami Institute Of Technology
Kawada Kunio Department Earth Science Toyama University
Kamiyama Kokichi National Institute Of Polar Research Research Organization Of Information And Systems
Watanabe Okitsugu National Institute Of Polar Research Research Organization Of Information And Systems
Suzuki T Department Of Earth And Environmental Sciences Faculty Of Science Yamagata University
Suzuki Toshitaka Faculty Of Science Yamagata University

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