Dust storms and loess accumulation on the Tibetan Plateau: A case study of dust event on 4 March 2003 in Lhasa

查看全文 作　　者：FANG [1,2]Xiaomin;HAN [1,3]Yongxiang;MA [1]Jinghui;SONG [3]Lianchun;YANG [1]Shengli;ZHANG [1]Xiaoye

机构地区：[1]Key Laboratory of Western China's Environmental Systems (Lanzhou University), Ministry of Education & College of Resources and Environment, Lanzhou University, Lanzhou 730000, China;[2]State Key Laboratory of Loess and Quatermary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710054, China;[3]Lanzhou Arid Meteorological Instiute of China Meteorological Bu-reau, Lanzhou 730000, China

出　　处：《Chinese Science Bulletin》索引2004年第49卷第9期,共8页

摘　　要：Whether the Tibetan Plateau is a significant dust source area is of great importance, because this is re-lated to the understanding of sources, accumulation and environmental effects of dusts on the Tibetan Plateau and in the Far East-Pacific Ocean regions as well as to the evolution of coupling of the Tibetan Plateau and atmosphere-ocean- continent exchange. Synoptic dynamics and remote sensing tracing of a dust storm on 3 to 5 March, 2003 in Lhasa on South Tibet demonstrate that the Tibetan Plateau possesses all factors and conditions of generating dust storms. Accom-panied with this dust storm is a strong ascending stream on the Plateau which has raised various sizes of dust particles into different levels. The lifted coarse particles were largely fallen down and accumulated as loess on the eastern Tibetan Plateau, and the fine particles were translated by the west-erly jet and subsided in the northern Pacific Ocean. The spa-tial-temporal distribution of dust-storms between years 1961 and 2000 on the Plateau shows that dust-storms mainly occur in winter and early spring with high frequency, and the path of dust storm moves gradually from south to north, which is closely coupled with the northward moving of the westerly jet from winter to spring over the Tibetan Plateau. Com-pared with other twelve dust source areas in China, the Ti-betan Plateau is one of the key dust source areas for the long-distance transport because its high occurring frequency and elevation cause fine particles easily to be lifted into the zone of the westerly jet. 关键词：沙尘暴黄土沉积青藏高原拉萨沙尘来源地区 2003年

相关文献

参考文献（10）
引证文献（29）
耦合文献（0）

参考文献(10)

引证文献(29)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Dust storms and loess accumulation on the Tibetan Plateau: A case study of dust event on 4 March 2003 in Lhasa

参考文献(10)

引证文献(29)

用户提示