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A GIS study of landslides in the lower Los Amigos foreland of Peru.

机译:GIS对秘鲁下洛斯阿米哥斯前陆的滑坡进行的研究。

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A GIS study of landslides in the lower Los Amigos sub-basin in Peru, where human influence on drainage is nearly non-existent, was performed to determine environmental variables controlling landslides. GIS layers consisted of slope, landslides (381 digitized), soils, and elevation.; I applied Ripley's K-function to estimate spatial extent of correlation between the landslides. The MIKE-SHE hydrologic model was used to determine the unsaturated soil-water pressure in the soil profile. Spatial regressions were performed between landslide counts in a 1X1 km grid and environmental variables: slope, aspect, distance of landslide from nearest river, and soil-water pressure. My conclusions are that landslides were spatially correlated at about 2km lengths, and variations of pore-water pressure in the soils significantly controlled landslide occurrence. Landslides along river meander paths may be an important factor that controls the evolution of foreland basins.
机译:地理信息系统(GIS)研究了秘鲁下洛斯阿米戈斯(Los Amigos)次流域的滑坡,那里几乎不存在人类对排水的影响,以确定控制滑坡的环境变量。 GIS层包括坡度,滑坡(数字化381),土壤和高程。我应用了Ripley的K函数来估计滑坡之间相关性的空间范围。 MIKE-SHE水文模型用于确定土壤剖面中的非饱和土壤水压力。在1X1 km网格中的滑坡计数与环境变量(坡度,纵横比,距最近河流的滑坡距离以及土壤水压力)之间进行了空间回归。我的结论是,滑坡在大约2公里长处具有空间相关性,并且土壤中孔隙水压力的变化显着控制了滑坡的发生。沿河曲径的滑坡可能是控制前陆盆地演化的重要因素。

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