干旱区生态环境知识资源中心(Arid): 祁连山东北缘最大风速气候特征

Arid

	祁连山东北缘最大风速气候特征
其他题名	Climate characteristics of the maximum wind speed in northeastern margin of Qilian Mountains
	郭小芹; 丁文魁; 钱莉; 曾婷
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2015
卷号	38 期号:3 页码:446-453
中文摘要	依托祁连山东北缘5个基本站和35个区域站观测资料,通过回归重建1971-2013年最大风速数据库,运用mann-kendall检验、EOF经验正交函数、耿贝尔分布分析了研究区域最大风速特征。结果表明:最大风速在明显减小,民勤尤为明显(0.1879m·s~(-1)·a~(-1)),在最大风速分布上形成3个极值中心:一是以红沙岗为代表的北部荒漠地区(22.75m·s~(-1)),二是以红山窑为代表的西部荒滩地区(21.76m·s~(-1)),三是以乌鞘岭为代表的祁连山地(21.54m·s~(-1))。以红沙岗、红山窑、丰乐、乌鞘岭为代表站,分析发现前三者最大风速递减率分别为-0.173、-0.104、-0.103,特征显著,但乌鞘岭基本围绕在平均值附近波动。年最大风速多出现在2~6月,尤其以4~5月份为高发期,占到全年的34.8%~56.8%,EOF第一特征向量进一步揭示了北部沙漠地区和祁连山地的典型风险特征。以南湖红崖山昌宁为界的北部沙漠地带在未来10a、20a、30a、50a间最大风速分别为29.18、30.20、30.82、31.63m·s~(-1),为典型的风灾危险区域。本文用区域站资料为最大风速危险区划提出了一些分析结论,可作为项目设计、民生安全、经济发展的参考依据,一定程度上填补了研究空白。
英文摘要	As one of the strongest sources of the sand storm in the north,it is very important to study the regional maximum wind speed. Depending on the data of 5 basic stations recorded from 1971 to 2013 and 35 regional stations recorded from 2009 to 2013,and then rebuilding the complete database for these stations by using the regression method,according to the Mann - Kendall examination,EOF empirical orthogonal function,the Gumbel distribution and so on,the change of maximum wind speed characteristics was studied. The studies have shown that in 1971-2013,the regions maximum wind speed reduced obviously especially in Minqin County,Gansu Province,China(0.187 9 m·s~(-1)·a~(-1)). There are 3 extremum centers on the distribution of the maximum wind speed: one is the northern desert region represented by Hongshagang Station,the second is the western beaches represented by Hongshanyao Station,the last is the Qilian Mountains represented by Wushaoling Station,these 3 stations have obvious advantages in max wind speed observation so that they become the study area for the main characteristics of wind field. Selecting Hongshagang,Hongshayao,Fengle and Wushaoling as the representative stations,the paper found that the maximum wind speed decline rate in the first three stations are 0.173,0.104, 0.103,but the change is not obvious in Wushaoling,and the decline rate changes just around the average value. Month maximum wind speed appears in unimodal distribution,the maximum is more likely to appear in February to June,especially in April and May,accounted for 34.8%-56.8% year,but there are still some differences between each station. Using EOF empirical orthogonal function to analyze the maximum wind speed,the cumulative contribution value of the first feature vectors is as high as 95.23%. Starting from the first eigenvector of eigenvalues to analyze the risk characteristics,the paper found that the northern desert areas and Qilian Mountains are typical risk areas,needs to take strict precautions against with. Using the Gumbel distribution to figure out the return period of the maximum wind speed,according to the results,the study area can be divided into different areas,the maximum wind speed in the next 10 years,30 years,50 years,and 100 years in the northern desert are 29.18,30.20,30.82 and 31.63 m·s~(-1),showing that this area is a typical wind damage zone. In this paper,the regional station data are used to analyze the characteristics of maximum wind speed and these conclusions can be used for studying regional development strategies and projecting design.
中文关键词	最大风速 ; 分布特征 ; EOF空间分布 ; 重现期
英文关键词	maximum wind speed distribution characteristics EOF spatial distribution return period
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5446645
来源机构	中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232651
作者单位	中国气象局兰州干旱气象研究所, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	郭小芹,丁文魁,钱莉,等. 祁连山东北缘最大风速气候特征[J]. 中国气象局兰州干旱气象研究所,2015,38(3):446-453.
APA	郭小芹,丁文魁,钱莉,&曾婷.(2015).祁连山东北缘最大风速气候特征.干旱区地理,38(3),446-453.
MLA	郭小芹,et al."祁连山东北缘最大风速气候特征".干旱区地理 38.3(2015):446-453.