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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Weddell Polynya ： ウィキペディア英語版 Weddell Polynya The Weddell Polynya or Weddell Sea Polynya is a polynya or irregular area of open water surrounded by sea ice in the Weddell Sea of the Southern Ocean off the Antarctica and near the Maud Rise. The size of New Zealand, it re-occurred each winter between 1974 to 1976.〔(【引用サイトリンク】 title=The Weddell Polynya )〕 These were the first three austral winters observed by the Nimbus-5 Electrically Scanning Microwave Radiometer (ESMR). Since 1976, the polynya has never been seen again. Since the 1970s, the polar Southern Ocean south of the Antarctic Circumpolar Current has freshened and stratified, likely a result of anthropogenic climate change. Such stratification may be responsible for suppressing the return of the Weddell Sea polynya. ==Other Antarctic polynyas== The presence of polynyas in McMurdo Sound provides an ice-free area where penguins can feed, so is important for the survival of the Cape Royds penguin colony.〔 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Weddell Polynya」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.