Changing rainfall and its impact on landslides in Sri Lanka
Changing rainfall and its impact on landslides in Sri Lanka
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斯里兰卡降雨量变化及其对山体滑坡的影响
DOI：
10.1007/bf02973195
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发表时间：
2005
影响因子：
2.5
通讯作者：
S. Herath
中科院分区：
文献类型：
--
作者：
U. Ratnayake;S. Herath
在最近的过去，斯里兰卡的降雨模式出现了明显的变化。本文描述了这种变化对滑坡发生的影响及其对生态系统的影响。这项研究表明，大多数发生在斯里兰卡东北季风，西南季风和第二季风间的滑坡位于三个明显分离的地区。降雨时间序列分析表明，随着降雨强度的增加，干旱期长度沿着增加，特别是在70年代后期。滑坡的位置和降雨强度增加的地区的空间分布之间有很强的关系。
During the recent past the rainfall pattern in Sri Lanka has shown a noticeable change. This paper describes the effect of this change on the occurrence of landslides and their impacts to eco systems. This study shows that most of the landslides occurring in Sri Lanka during northeast monsoons, southwest monsoons and second inter-monsoon were located in three distinctively separated areas. Analysis of rainfall time series shows a trend of increased lengths of dry periods along with an increasing trend of rainfall intensity, especially after the late seventies. A strong relation is obtained between the location of landslides and the spatial distribution of areas where rainfall intensity is increased.