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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 Whitney Glacier ： ウィキペディア英語版 Whitney Glacier The Whitney Glacier is a glacier situated on Mount Shasta, in the U.S. state of California. The Whitney Glacier is the longest glacier and the only valley glacier in California. In area and volume, it ranks second in the state behind the nearby Hotlum Glacier. In 1986, the glacier was measured to be deep and over three km in length. The glacier starts on Mount Shasta's Misery Hill at and then it flows northwestward down to the saddle between Mount Shasta and Shastina.〔Google Earth elevation for GNIS coordinates.〕 There is a major icefall that occurs there since the ground is very uneven at .〔 Past the icefall, the glacier flows down the valley between Mount Shasta and Shastina with the terminus at .〔 ==Advance== In 2002, scientists made the first detailed survey of Mount Shasta's glaciers in 50 years. They found that seven of the glaciers have grown over the period 1951-2002, with the Hotlum and Wintun Glaciers nearly doubling, the Bolam Glacier increasing by half, and the Whitney and Konwakiton Glaciers growing by a third. The study concluded that though there has been a two to three degree Celsius temperature rise in the region, there has also been a corresponding increase in the amount of snowfall. Increased temperatures have tapped Pacific Ocean moisture, leading to snowfalls that supply the accumulation zone of the glacier with 40 percent more snowfall than is melted in the ablation zone. Over the past 50 years, the glacier has actually expanded 30 percent, which is the opposite of what is being observed in most areas of the world. Researchers have also stated that if the global warming forecast for the upcoming next 100 years are accurate, the increased snowfall will not be enough to offset the increased melting, and the glacier is then likely to retreat. Whitney Glacier, along with the Hubbard Glacier in Alaska, are larger now than in 1890. However, Hubbard Glacier, along with a few other notable glaciers whose termini are at sea level, are calving glaciers. 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「Whitney Glacier」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.