塔克拉玛干沙漠腹地塔中地区的风动力环境  

Wind Power Environment of Tazhong Area in Hinterland of Taklimakan Desert

作　　者：周成龙 杨兴华[3,2] 刘厚勇 蒋新波 吴新萍 何清[3,2] 

机构地区：[1]塔中气象站,新疆塔中841000 [2]塔克拉玛干沙漠大气环境试验观测站,新疆塔中841000 [3]中国气象局乌鲁木齐沙漠气象研究所,新疆乌鲁木齐830002

出　　处：《水土保持通报》2014年第3期218-222,共5页Bulletin of Soil and Water Conservation

基　　金：中央级公益性科研院所基本科研业务费项目"塔克拉玛干沙漠风蚀起沙关键特性参数及影响因子观测研究"((IDM201103);国家自然科学基金项目"西北沙漠地表沙粒运移特性及动力热力参数研究"(41175017)

摘　　要：输沙势是衡量一个地区风沙活动强弱的重要参数。为了更好地了解塔克拉玛干沙漠腹地塔中地区的沙粒运移状况,为沙尘暴预防与治理提供科学依据,通过地表土壤湿度修订出每个月的临界起沙风速以替代以往的一个经验值,进而以塔中气象站所提供的2006—2012年风速和风向数据为基础,研究了塔中地区的输沙势分布特征。结果表明:(1)起沙风风向主要分布在ENE,NE及E这3个方向上。(2)输沙势主要集中在春夏季。春季年平均合成输沙势分别为71.3VU,合成方向为31°;夏季年平均合成输沙势为59.7VU,合成方向为70.7°;冬季最小,合成输沙势仅为1VU。(3)春、夏、秋、冬方向变率指数都相对较大,说明塔中地区的风况较为单一。(4)春、夏、秋、冬4个季节的输沙势主要集中在ENE,NE及E这3个方向上。Drift potential is an important parameter to measure the strength of sand activities in an area. In order to understand sand particle migration in Tazhong area located in the Hinterland of the Taklimakan Desert, and to provide scientific reference for the prevention and control of sandstorm in the area, threshold sand-moving wind speed was revised to replace the previous empirical value through monthly surface soil moisture, and then the distribution of drift potential in the area was studied based on the meteorological data of Tazhong area from 2006 to 2012, including wind speed and direction. Results are as follows： （1） Sand- moving wind was mainly distributed in the ENE, NE and E directions. （2） The drift potential was mainly distributed in spring and summer. The seasonal resultant drift potential in spring was 71.3 VU and the re- sultant direction was 31°; in summer it was 59.7 VU and the resultant direction was 70.7°; and in winter, the resultant drift potential was least, only 1 VU. （3） The ratio of resultant drift potential to drift potential was relatively high in four seasons, showing that the wind regime was single in Tazhong area. （4） The drift potential was mainly distributed in the ENE, NE and E directions in four seasons.

关 键 词：输沙势 起沙风 塔中地区 

分 类 号：P425.55[天文地球—大气科学及气象学]