Measurements of the time-varying free-surface profile across the swash zone obtained using an industrial LIDAR
Measurements of the time-varying free-surface profile across the swash zone obtained using an industrial LIDAR
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DOI：
10.1016/j.coastaleng.2010.07.001
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发表时间：
2010-11-01
影响因子：
4.4
通讯作者：
Peirson, W. L.
中科院分区：
文献类型：
--
作者：
Blenkinsopp, C. E.;Mole, M. A.;Peirson, W. L.
使用工业激光雷达仪器测量随时间变化的水面高程内的冲带进行了研究。在一个桑迪海滩，用激光雷达和精密超声高度计网络同时测量了斜透镜在海滩表面的传播。这两个数据集的比较表明，随时间变化的斜自由表面轮廓使用激光雷达比较有利的点测量使用超声波高度计。值得注意的是，使用连续扫描激光束使单个LIDAR仪器能够在整个冲流区的数百个点处几乎同步地获得自由表面高程的测量值。这种高空间分辨率允许小规模的流动特征，如旋转斜前缘梯度和二级孔的存在被详细描述，并否定了部署大型多传感器阵列的需要。(C)2010爱思唯尔有限公司版权所有。
The use of an industrial LIDAR instrument to measure time-varying water-surface elevations within the swash zone is investigated. The propagation of the swash lens across the beach face was measured simultaneously by a LIDAR instrument and a network of precision ultrasonic altimeters at a sandy beach. Comparison of the two datasets indicates that the time-varying swash free-surface profile obtained using a LIDAR compare favourably with point measurements obtained using ultrasonic altimeters. Significantly, the use of a continuously scanning laser beam enables a single LIDAR instrument to obtain measurements of free-surface elevation near-synchronously at several hundred points throughout the swash zone. This high spatial resolution permits small-scale flow features such as the swash-front gradient and the presence of secondary bores to be detailed, and negates the need for the deployment of a large, multi-sensor array. (C) 2010 Elsevier B.V. All rights reserved.