新疆铁路沿线前百公里风区大风特征统计分析  

Feature of Gale along Railway of the Front 100-Kilometers Wind Area in Southern Xinjiang

作　　者：潘新民[1] 彭艳梅 屈梅[2] 张新军[1] 黄秉光[1] 殷庭炜 PAN Xinmin;PENG Yanmei;QU Mei;ZHANG Xinjun;HUANG Binguang;YIN Tingwei(Xinjiang Meteorological Service Center,Urumqi 830002,China;Korla Meteorological Bureau,Korla 841000,China)

机构地区：[1]新疆气象服务中心,新疆乌鲁木齐830002 [2]巴州气象局,新疆库尔勒841000

出　　处：《沙漠与绿洲气象》2019年第3期66-71,共6页Desert and Oasis Meteorology

基　　金：新疆气象局科研项目(MS201703);中国气象局行业专项(GYHY201306058)共同资助

摘　　要：基于2015—2017年新疆铁路沿线17个大风监测站的逐时观测资料,分析了南疆线前百公里风区的大风时空分布特征,并与著名的百里风区代表站十三间房气象站进行对比分析,结果表明:前百公里风区通常是指新疆著名的三十里风区和百里风区外又一强风区带,风速强劲,大风历时长,其间以铁泉西至三个泉大桥区段风速最大,代表站三个泉大桥瞬间极大风速比十三间房气象站平均大12.2m/s;前百公里风区平均风速季节变化规律为夏季>春季>秋季>冬季;5月达到月均风速的最大值,1月为最小值;平均风速日变化呈单峰形式变化。大风情况下前百公里风区沿线主导风向较稳定,为NW(西北风)至N(北风)之间。风区中铁路沿线呈东北—西南走向,正好与大风的主导风向相正交,形成横风,对列车运行可产生较大的危害。Based on the hourly observation data of 17 gale monitoring stations along the Xinjiang railway during 2015-2017,the spatial and temporal distribution characteristics of the strong winds in the front 100-kilometers wind area of the southern Xinjiang line were analyzed,and was compared with the Shisanjianfang representative stations of the 100-kilometers wind areas.The results show as follows:the front 100-kilometers wind area was another strong wind zone besides the Sanshili wind zone and the 100-kilometers wind zone in Xinjiang.The wind speed was strong and the strong wind last long in the front 100-kilometers wind area.The wind speed was the largest from the West Tiequan to the Sangequan bridge section.The instantaneous maximum wind speed of the Sangequan bridge was 12.2 m/s larger than that of the Shisanjianfang weather station.The seasonal variation of the average wind speed in the front 100-kilometers wind area wind zone changed in following way:summer>spring>autumn>winter;its the maximum monthly mean wind speed appeared in May,and the minimum appeared in January.The average daily wind speed changed in a single peak form.In the case of strong winds,the dominant wind direction along the its wind zone was relatively stable,between NW(northwest wind)and N(north wind).However,the railway along the northeast-southwest direction of the wind tunnel was just orthogonal to the dominant wind direction of the strong wind,forming a crosswind,which could cause greater damage to the train operation.

关 键 词：前百公里风区 大风 时空分布特征 主导风向 

分 类 号：P468.026[天文地球—大气科学及气象学]