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塔里木盆地南缘策勒典型下垫面水的湍流特征
Authors
李开封
桂东伟
+3 more
潘燕芳
穆桂金
苏永亮
Publication date
1 May 2011
Publisher
Abstract
基于2010年3月28日天气过程在策勒地区实测风速数据, 分析戈壁、绿洲农田、灌木林 三种典型下垫面3 m高度水平风速的最大脉动风速、湍流强度、阵风因子等湍流特征, 结果显示:( 1)近地层湍流在时间序列上具有多尺度复杂性, 湍流强度、阵风因子均随分析时距增大呈对数增长; ( 2)以10m in为分析时距获得的各项参数都显示绿洲植被显著降低了同等高度风速的水平分量, 同时也引起了湍流强度和阵风因子的显著增强, 并导致了最大脉动风速的大幅度提升; ( 3)本次实测风速段内最大脉动风速与平均风速成正相关关系, 且戈壁、绿洲农田、灌木阻沙林随风速的增长速率依次增大
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016