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2017/06/06 14:00 Associate Prof. Wei-Li Liang（School of Forestry and Resource Conservation, NTU）
Seminar
Poster： ╱ Post date：2017-05-31NCU IHOS Seminar Announcement
Speaker：Associate Prof. Wei-Li Liang
Place：S-325, Science Building 1
Abstract：
Title：Processes of rainfall, infiltration, and landslide in forests
Speaker：Associate Prof. Wei-Li Liang
School of Forestry and Resource Conservation, NTU
Time：06/06（Tue.）14：00
Place：S-325, Science Building 1
Abstract：
In rainfall redistribution processes in forest stands, a part of rainfall is intercepted by the canopy, while other parts are partitioned into throughfall and stemflow through the canopy as diffuse and point inputs to the forest floor, respectively. Therefore, the rainwater reaching the forest floor is considerably heterogeneous. Additionally, very rapid water movement and generation of saturated zones were frequently observed underneath trees, which could be attributed these features to small-scale water inputs by stemflow. Soil water dynamics and perched water distributions at the soil–bedrock interface are important information for the predictions of the location and timing of shallow landslides. Although there are many numerical models that simulated hydrological processes from rainfall through runoff and then conducted slope stability analysis to predict the location and timing of shallow landslides, heterogeneous characteristics within rainfall redistribution and rainwater infiltration processes were little considered. Thus, the mechanism and processes of rainfall-induced landslides are still intense interests of hydrologists.
In the presentation, I will introduce (1) how rainwater goes into soil layers, (2) how subsurface saturation generates at the soil–bedrock interface, and (3) how subsurface saturation relates to rainfall-induced landslides.
Last modification time：2017-05-31 AM 9:00
