G061012 アラスカ北極圏における湖沼～大気間のメタン交換([G061-01]熱工学部門,一般セッション(1) : エネルギー利用等)

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タイトル別名
  • G061012 Air-lake exchange of Methane in the Alaskan Arctic Zone

抄録

This research focused on the methane exchange between lakes and the atmosphere in the Alaskan Arctic Zone. Water samples collected from 29 lakes during summer in 2008 and 2012, dissolved methane concentrations (DM) in the samples were measured. The relationships between DM and lake area were similar to those for Swedish lakes. The methane flux in Alaskan Arctic Zone was 20.3 Gg CH_4 yr^<-1>. Mean methane flux density per lake area (m^2) was 0.799 g CH_4 m^<-2> yr^<-1>. This is about the same level as Swedish and Finnish lakes in no permafrost region. These results suggest that there are no apparent effects of thawing permafrost on DM and on methane flux in the Alaskan Arctic Zone.

収録刊行物

  • 年次大会

    年次大会 2013 (0), _G061012-1-_G061012-5, 2013

    一般社団法人 日本機械学会

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