USING LIDAR DATA FOR DEBRIS-FLOW MODELLING
USING LIDAR DATA FOR DEBRIS-FLOW MODELLING
复制标题
使用激光雷达数据进行泥石流建模
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
M. Mikoš
中科院分区：
文献类型：
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作者：
Jost Sodnik;T. Podobnikar;M. Mikoš
Mathematical modelling is a common approach when assessing debris flow hazard. In this study we applied the widely used Flo-2D model. The high accuracy of the input parameters is essential for obtaining acceptable results. The numerical grid in the area of the debris flow movement is generated from topographic data. In Slovenia, DEM5 and DEM12.5 are publicly available data but with rather low morphologic resolution. Results with LiDAR data (higher resolution, options for further improvements) are more accurate and more useful for debris flow hazard mapping. The modelled depths and velocities are more accurate and follow better field conditions. Downside of the high resolution data is much longer computational time. Since torrential fans are often densely populated, modelling of built structures influences is also important. With adequate modelling of such structures the obtained results are more accurate with better expressed local flow conditions.
