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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 Willamette Valley Flood of 1996 ： ウィキペディア英語版 Willamette Valley Flood of 1996 The Willamette Valley Flood of 1996 was part of a larger series of floods in the Pacific Northwest of the United States which took place between late January and mid-February 1996. It was Oregon's largest flood event in terms of fatalities and monetary damage during the 1990s. The floods spread beyond Oregon's Willamette Valley, extending west to the Oregon Coast and east toward the Cascade Mountains. Significant flood damage also impacted the American states of Washington, Idaho (particularly the north of the state) and California. The floods were directly responsible for eight deaths in Oregon, as well as over US $500 million in property damage throughout the Pacific Northwest. Three thousand residents were displaced from their homes.〔.〕 ==Causes== An unusual confluence of weather events made the floods particularly severe. The winter preceding the floods had produced abnormally high rainfall and relatively low snowfall. The heavy rains saturated ground soil and raised river levels throughout January 1996. In late January, a heavy snowstorm padded snow packs throughout the region. This was followed by a deep freeze that lasted for six to ten days. The new layer of snow was quickly melted by a warm subtropical jetstream which arrived on February 6. The jetstream brought along further rains. The combination of the additional rain, the saturated ground, and the melting snow packs engorged dozens of streams and tributaries, which in turn flooded into the region's major rivers.〔.〕 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「Willamette Valley Flood of 1996」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.