Trends Analysis of Rainfall Patterns Triggering Landslide over the Gorges Reservoir Region

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Li, Lin^1 ; Zeng, Ni^1 ; Liu, Ruiqin^1 ; Gong, Shunli^1

College of Civil Engineering and Architecture, Guangxi University, Nanning, China^1

关键词: Annual average;    Daily rainfall;    Long lasting;    Mann-Kendall test;    Precipitation events;    Rainfall patterns;    Three Gorges Reservoir region;    Trend estimation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/3/032012/pdf
DOI  :  10.1088/1755-1315/170/3/032012

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Rainfall-triggered landslides in the Three Gorges Reservoir Region are related to two rainfall patterns: rainstorm event and long-lasting moderate precipitation event. Trends of the two rainfall patterns are investigated using trend estimation and Mann-Kendall test. For this purpose, the daily rainfall data are obtained from the Yichang station, the Enshi station and the Chongqing station for the period 1952-2011. The results of the trend estimation show that annual average number of rainstorm events increase at the three stations during the period, while opposite trends in long-lasting moderate precipitation events is observed. However, the increasing and decreasing trends are not significant in the Mann-Kendall test.