Assessment of Debris Flow Induced by Heavy Rain and Rainstorm in the Yangtze Valley of Gansu Province

MA Peng-li; PU Jin-yong; XIN Ji-wu

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Assessment of Debris Flow Induced by Heavy Rain and Rainstorm in the Yangtze Valley of Gansu Province

- Assessment of Debris Flow Induced by Heavy Rain and Rainstorm in the Yangtze Valley of Gansu Province
- Bulletin of Soiland Water Conservation Vol. 26, Issue 5, Pages: 67-70(2007)
- 作者机构：
  
  1. 中国气象局兰州干旱气象研究所,甘肃,兰州,730020
  2. 平凉市气象局,甘肃,平凉,744000
  3. 甘肃省天水农业气象试验站,甘肃,天水,741020
  4. 海南省气象局,海南,海口,570000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2007
- 稿件说明：
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MA Peng-li, PU Jin-yong, XIN Ji-wu. Assessment of Debris Flow Induced by Heavy Rain and Rainstorm in the Yangtze Valley of Gansu Province[J]. Bulletin of Soiland Water Conservation, 2007, 26(5): 67-70.
DOI：

MA Peng-li, PU Jin-yong, XIN Ji-wu. Assessment of Debris Flow Induced by Heavy Rain and Rainstorm in the Yangtze Valley of Gansu Province[J]. Bulletin of Soiland Water Conservation, 2007, 26(5): 67-70. DOI：

摘要

运用甘肃省长江流域11个气象站1971-2000年30a整编气象资料及5个农业气象观测站1981-2000年1m土层内的土壤湿度资料

分析了该地大(暴)雨发生频率及大(暴)雨易发时段不同深度层次的土壤含水量、可容纳水量的变化

构建了评价当地大(暴)雨引发泥石流的评价指数。结果表明

在发生大雨时

西汉水流域的泥石流发生可能性大于白龙江流域。发生暴雨时

白龙江发生泥石流的可能性大于西汉水流域。

Abstract

Based on meteorological data from 11 weather stations during 1970-2000 and data of soil moisture from 5 agro-meteorological observation stations during 1981-2000

the frequency of heavy rain and storm and the variations of soil water content and potential soil water content were analyzed. The index used to as-sess possibility of debris flow had been created. Results showed that under heavy rain

the possibility of deb-ris flow in Xihan River valley is greater than that in Bailong River valley

while under rainstorm

the possi-bility of debris in Bailong River valley is greater than that in Xihan River valley.

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