Variation Regularities of Dust Storms in Spring in Wuchuan, China

摘要：

Dust storm is one of serious enviornmental problem due to wind sand movement. The study focused on the annual dust storm time series of past long years in Wuchuan, China. The MHF wavelet method was adopted in analyzing the temporal-frequency multi-time scale variations and jump features of dust storm activities, which can reveal the multi-scale characteristics of dust storm. Consequently, the periods and turning points of dust storm series in different time-scale are revealed. Meanwhile, forecasting the trend of dust storm activity in the following years. The results show that the variations of dust storm activities in agro-pastoral ecotone of northern foot of Yinshan Mountain contain obvious staggered features. It also found that approximate 17-year period-oscillation of dust storm activities variations is the strongest. In final the wavelet coefficients patterns exhibit a probable increasing trend in dust storm in the following years. It provides important information for approaching the predictability of dust storm activities trend in agro-pastoral ecotone of northern foot of Yinshan Mountain.

关键词： Dust storm activities MHF wavelet method Multi-time scale Variation regularities Agro-pastoral ecotone

作者: ZOU Chunxia SHEN Xiangdong LI Zhangjun LI Ruiping

作者单位: College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University,Huhhot 010 Inner Mongolia Weather Bureau,Huhhot 010051,Neimenggu,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 861-864

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）