Soil volume estimation in debris flow areas using lidar data in the 2014 Hiroshima, Japan rainstorm
Soil volume estimation in debris flow areas using lidar data in the 2014 Hiroshima, Japan rainstorm
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DOI：
10.1117/12.2194238
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发表时间：
2015-10
影响因子：
2.7
通讯作者：
H. Miura
中科院分区：
文献类型：
--
作者：
H. Miura
2014年8月20日，日本广岛暴雨引发泥石流，对广岛市北方的建筑区造成了大面积破坏。为了考虑各种应急响应活动和早期恢复规划，重要的是在灾难发生后立即评估泥石流地区的土壤体积分布。在这项研究中，自动非线性映射技术应用于光探测和测距（LiDAR）衍生的数字高程模型（DEM）的灾难之前和之后观察到的快速，准确地纠正数据的几何位置误差。泥石流产生的土壤体积通过减去事件前和事件后的DEM来估计。从估算的泥石流积土量的分布，讨论了泥石流区的地貌特征。
Debris flows triggered by the rainstorm in Hiroshima, Japan on August 20th, 2014 produced extensive damage to the built-up areas in the northern part of Hiroshima city. In order to consider various emergency response activities and early-stage recovery planning, it is important to evaluate the distribution of the soil volumes in the debris flow areas immediately after the disaster. In this study, automated nonlinear mapping technique is applied to light detection and ranging (LiDAR)-derived digital elevation models (DEMs) observed before and after the disaster to quickly and accurately correct geometric locational errors of the data. The soil volumes generated from the debris flows are estimated by subtracting the pre- and post-event DEMs. The geomorphologic characteristics in the debris flow areas are discussed from the distribution of the estimated soil volumes.