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冰川冻土  2014 

河西走廊特殊地形与大风的关系探讨

DOI: 10.7522/j.issn.1000-0240.2014.0042, PP. 347-351

Keywords: 河西走廊,特殊地形,大风,狭管效应

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Abstract:

运用河西走廊1951-2010年大风资料,参考相应地区的的地形特征,探讨了地形与大风发生的关系.结果表明地形的狭管效应对局地大风风速的突然加强是河西走廊多大风的重要原因,海拔是影响大风日数、最大风速和持续时间的重要因素.祁连山的阻挡作用是造成山区北侧大风日数偏少、最大风速偏小和持续时间偏短的重要因素;地形与河谷走向是影响大风风向的重要因素.

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