干旱区生态环境知识资源中心(Arid): 塔里木盆地中的大气环流及昆仑山北坡的黄土堆积

Arid

	塔里木盆地中的大气环流及昆仑山北坡的黄土堆积
其他题名	Atmospheric Circulation in Tarim Basin and Loess Accumulation in Northern Slope of Kunlun Mountains
	韩永翔 1; 杨胜利 2; 方小敏 2; 宋连春 1
ISSN	1000-694X
出版年	2006
卷号	26 期号:3 页码:351-355
中文摘要	通过分析塔克拉玛干沙漠风积地貌形态所揭示的风向及盆地边缘25个气象站40a的盛行风，我们恢复了盆地中沙尘暴形成时的风场。对大气环流分析表明，在暖季（春、夏）由于地面对大气感热加热作用强烈，形成了浅薄的热低压。当冷空气入侵时，在和田于田民丰一带形成强大的辐合上升区，使这个地区成为中国沙尘暴发生频率最高的地区，其扬起的粉尘沉降在昆仑山北坡而形成黄土堆积。由于冷空气入侵的强度不同，粉尘的扬升高度也不同，昆仑山北坡黄土厚度表明平均扬升高度在海拔2900～3400m左右，最强的沙尘暴可将粉尘扬升到5500m的西风急流区.
英文摘要	Having analyzed the prevailing wind directions that are showed by Taklimakan Desert dunes shapes and that have been observed by 25 weather stations for 40 years around the Taklimakan Desert, we reestablished the wind field map when duststorm occurred in the Tarim basin. The analysis on the atmospheric circulation reveals that the flimsy thermal low was formed in the warm seasons （spring ＆ summer） as the surface heat being transferred to air through the sensible heat. When the cold airflow invaded into the basin, powerful current convergence zones of uplift formed along the belt of Hetian-Yutian-Minfeng in south basin, where became the highest frequently duststorm-occurring area in China. The uplifting sand-dust were transported and deposited on the northern slope of Kunlun Mountains, forming loess deposition. The uplifted altitudes of sand-dust vary with the intensity of cold airflow intruding. On northern slope of Kunlun Mountains the average altitude is at 2 900～3400 m indicated by the distribution of loess deposition. The strongest duststorm can raise sand-dust up to 5 500 m height and come into the westerly jet region.
中文关键词	塔克拉玛干沙漠 ; 风积地貌 ; 大气环流 ; 沙尘暴 ; 黄土堆积
英文关键词	Taklimakan Desert aeolian accumulation landform atmospheric circulation duststorm loess accumulation
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:2451639
来源机构	兰州大学 ; 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/2XILL650/220443
作者单位	1.中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室, 兰州, 甘肃 730020, 中国; 2.兰州大学资源环境学院, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	韩永翔,杨胜利,方小敏,等. 塔里木盆地中的大气环流及昆仑山北坡的黄土堆积[J]. 兰州大学, 中国气象局兰州干旱气象研究所,2006,26(3):351-355.
APA	韩永翔,杨胜利,方小敏,&宋连春.(2006).塔里木盆地中的大气环流及昆仑山北坡的黄土堆积.,26(3),351-355.
MLA	韩永翔,et al."塔里木盆地中的大气环流及昆仑山北坡的黄土堆积".26.3(2006):351-355.