The August 12th Supper-Rainstorm and Forecasting Precipitation Areas and Debris Flow Points in Longnan , Gansu
详细信息
- 责任者：Feng Jun (Longnan Meteorological Bureau of Gansu Province ; Wudu 746000 ; China)
- 刊名：Journal of Geological Hazards and Environment Preservation
- 出版年：2011
- 卷期：22(4)
- 关键词：大气降水 ; atmospheric precipitation ; 泥石流 ; debris flows ; 甘肃 ; Gansu Province
- 页码：p.9-15
- 图表：7 illus., 7 refs.
- 分类号：1800
- issnNo：ISSN1006-4362
- isbnNo：CN51-1467/P
摘要
August of 2001, continuous heavy rains occurred in Longnan, triggering flash floods, debris flows, landslides and other geological disasters. This paper discusses the weather condition, atmospheric circulation background and their physical characteristics. The rainfall mechanism is also analyzed in terms of nephograms and precipitation characteristics. The low groove at the edge of the subtropical high pressure developed into low vortexes as it moved eastward, thus storms formed. The vortexes and storms were so strong at certain points as to cause disasters.