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首页> 外文期刊>Journal of Asian earth sciences >Characterizing the Hsincheng active fault in northern Taiwan using airborne LiDAR data: Detailed geomorphic features and their structural implications
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Characterizing the Hsincheng active fault in northern Taiwan using airborne LiDAR data: Detailed geomorphic features and their structural implications

机译：使用机载LiDAR数据表征台湾北部的新城活动断层：详细的地貌特征及其结构意义

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摘要

We applied newly acquired high-resolution airborne LiDAR data to study a segment of the Hsincheng fault, a well-known active fault near a large industrial park in northern Taiwan. The Hsincheng fault has received much attention and study in the past; but high spatial resolution digital elevation models have not previously been applied to the study of the fault and its surrounding structures. We processed the acquired LiDAR data and produced 1 m digital elevation models (DEMs) to investigate the active fault adjacent to the densely populated and important infrastructure in Taiwan. Using the LiDAR DEMs, aerial photographs and topographic maps, we show highly detailed geomorphic characteristics around the study area of the Hsincheng fault. Three major characteristics of the study area are defined that include three very well preserved river terraces at varying levels, the fault/fold scarp of the Hsincheng fault, and meandering river systems. Using the LiDAR DEMs, we were able to detect with precision several fault/fold scarps and very gentle NE-trending folding of the river terraces. In general, the LiDAR DEMs have provided unprecedented clarity of landforms for one segment of the Hsincheng fault, which has helped the characterization of subtle but important geomorphic features.
机译：我们使用新获取的高分辨率机载LiDAR数据研究了新城断层的一部分，该断层是台湾北部大型工业园区附近的著名活动断层。过去，新城断层一直备受关注和研究。但是高空间分辨率数字高程模型以前尚未用于断层及其周围结构的研究。我们处理了获取的LiDAR数据并生成了1 m数字高程模型（DEM），以调查台湾人口稠密且重要基础设施附近的活动断层。利用LiDAR DEM，航空照片和地形图，我们在新城断层研究区附近显示了非常详细的地貌特征。定义了研究区域的三个主要特征，其中包括三个保存完好的不同水平的河阶地，新城断裂的断层/褶皱和蜿蜒的河系。使用LiDAR DEM，我们能够精确地检测出数条断层/褶皱陡坡和河床阶地非常缓慢的NE趋势褶皱。总体而言，LiDAR DEM为新城断层的一部分提供了前所未有的地貌清晰度，这有助于表征细微但重要的地貌特征。

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