摘要
民勤地区是中国沙尘暴发生年频次最高的地区。本文讨论了干旱、地震、古湖泊和风线对民勤地区沙尘暴形成所产生的综合作用。强地震破坏了土壤颗粒的团聚性,古湖泊环境提供了沙土混杂的地表层,风线决定了沙尘暴的飞扬和运移。
The Minqin region is prone to dust storm. The integrated effects of drought, earthquake, paleo-lake and wind line on the origin of dust storms are discussed in this paper. Strong earthquakes destroy the consolidation of soil particles and the circumstance of paleo-lake supplies mixture of sand with soil. The climate and wind line determine the flying up and movement of dust storm.
出处
《灾害学》
CSCD
2004年第2期64-68,共5页
Journal of Catastrophology
关键词
民勤地区
沙尘暴
最高频次
强震
古湖泊
气候
综合作用
Minqin region
dust storm
high frequency
strong earthquake
paleo-lake, climate, integrated effects
