Optical measurements of tsunami inundation through an urban waterfront modeled in a large-scale labo
Optical measurements of tsunami inundation through an urban waterfront modeled in a large-scale labo
复制标题
通过大型实验室模拟的城市滨水区对海啸淹没进行光学测量
DOI：
10.1016/j.coastaleng.2010.10.005
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Joel Stanley
中科院分区：
文献类型：
--
作者：
Matthew Rueben;R. Holman;D. Cox;Sang;Joe Killian;Joel Stanley
本文介绍了通过一个实验室的波盆城市滨水区的海啸淹没的光学测量。物理模型以1：50的比例构建，是俄勒冈州海滨镇的理想化。设计固定床模型研究城市滨水区沿着的初始淹没区，以便观察几个大型建筑物周围的水流。本文提出了一种分析的光学测量与两个开销的摄像机，重点跟踪通过城市滨水区的海啸淹没的前沿和量化的算法用于跟踪边缘的准确性。结果表明，该方法提供了高分辨率的信息，在时间和空间的前沿位置，这些数据可以用来量化的影响，大的宏观粗糙度功能的海啸淹没过程中在实验室设置。宏观粗糙度的总体效果是相对于没有宏观粗糙度的控制部分降低孔传播速度。相对于控制截面，由于存在宏观粗糙度，孔速度可以降低多达40%。
This paper presents optical measurements of tsunami inundation through an urban waterfront in a laboratory wave basin. The physical model was constructed at 1:50 scale and was an idealization of the town of Seaside, Oregon. The fixed-bed model was designed to study the initial inundation zone along an urban waterfront, such that the flow around several large buildings could be observed. This paper presents an analysis of the optical measurements made with two overhead video cameras, focusing on tracking the leading edge of the tsunami inundation through the urban waterfront and quantifies the accuracy of the algorithm used to track the edge. The results show that the methodology provides high-resolution information in both time and space of the leading edge position, and that these data can be used to quantify the influence of large macro-roughness features on the tsunami inundation processes in laboratory settings. The overall effect of the macro-roughness was to decrease the bore propagation speed relative to the control section with no macro-roughness. The bore speed could be reduced by as much as 40% due to the presence of the macro-roughness relative to the control section.