极地研究

极地研究 ›› 2003, Vol. 14 ›› Issue (1-English): 48-56.

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Spatial variability of chemical tracers in surface snow along the traverse route from the coast to 1000 km inland at east Dronning Maud Land, Antarctica

Toshitaka Suzuki1, Yoshinori Iizuka2, Teruo Furukawa2, Kenichi Matsuoka3, Kokichi Kamiyama2 and Okitsugu Watanabe2   

  1. 1 Yamagata University, Kojirakawa-cho 1-chome, Yamagata 990-8560;
    2 National Institute of Polar Research, Kaga 1-chome, Itabashi-ku, Tokyo 173-8515;
    3 Institute of Low Temperature Science, Hokkaido University, Kita-19, Nishi-8, Kita-ku, Sapporo 060-0819
  • 出版日期:1953-03-30 发布日期:1953-03-30
  • 通讯作者: Toshitaka Suzuki

Spatial variability of chemical tracers in surface snow along the traverse route from the coast to 1000 km inland at east Dronning Maud Land, Antarctica

Toshitaka Suzuki1, Yoshinori Iizuka2, Teruo Furukawa2, Kenichi Matsuoka3, Kokichi Kamiyama2 and Okitsugu Watanabe2   

  1. 1 Yamagata University, Kojirakawa-cho 1-chome, Yamagata 990-8560;
    2 National Institute of Polar Research, Kaga 1-chome, Itabashi-ku, Tokyo 173-8515;
    3 Institute of Low Temperature Science, Hokkaido University, Kita-19, Nishi-8, Kita-ku, Sapporo 060-0819
  • Online:1953-03-30 Published:1953-03-30
  • Contact: Toshitaka Suzuki

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被引次数

9

摘要：

We measured the spatial variability of Cl-, Na+, SO42-, NO3- and 7Be concentrations in snow cover along the traverse 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 200 km inland. Between 200-1000 km inland, the concentrations of Na+ were nearly constant. On the other hand, the concentrations of Cl- increased with distance beyond 750 km 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 SO42-, NO3- and 7Be in snow were relatively high in the coastal region and the inland plateau region compared with those in the katabatic wind region.

关键词: Antarctica, snow, chemistry, spatial variabiligy, atmospheric transport

Abstract:

We measured the spatial variability of Cl-, Na+, SO42-, NO3- and 7Be concentrations in snow cover along the traverse 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 200 km inland. Between 200-1000 km inland, the concentrations of Na+ were nearly constant. On the other hand, the concentrations of Cl- increased with distance beyond 750 km 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 SO42-, NO3- and 7Be in snow were relatively high in the coastal region and the inland plateau region compared with those in the katabatic wind region.

Key words: Antarctica, snow, chemistry, spatial variabiligy, atmospheric transport