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原文传递 Optical Measurements of Tsunami Inundation and Debris Movement in a Large-Scale Wave Basin

题名：	Optical Measurements of Tsunami Inundation and Debris Movement in a Large-Scale Wave Basin
其他题名：	Arikawa,T.,Ohtsubo,D.,Nakano,F.,Shimosako,K.,and Ishikawa,N.(2009)."Large model tests of drifting container impact force due to surge front tsunami."Proc.,Conf.on Coastal Engineering,Japan Society of Civil Engineers,Tokyo(in Japanese).
正文语种：	英文
作者：	M. Rueben
关键词：	Tsunami;Laboratory experiments;Debris;Optical measurements;Argus camera;Inundation;Overland flow
摘要：	This paper presents optical measurements of debris movement and tsunami inundation over an unobstructed beach in a laboratory wave basin. The debris consisted of rectangular boxes and was placed unconstrained on a flat section raised above the basin floor with no still water on the raised section. Debris movement was measured using two overhead video cameras and a novel object-tracking algorithm. Two standard optical techniques, wave edge detection and particle image velocimetry, were used to compare optical and in situ measurements of fluid velocity. The debris motion (position, velocity) in the onshore direction was found to be repeatable, but the offshore motion varied between trials because of the irregular nature of the flow field during the return. For debris in free translation, as the number of debris specimens increased, the peak average velocity decreased and the onset of the peak was delayed in the onshore direction. In the offshore direction, the velocity was lower by a factor 4-6 and was independent of the quantity of debris. The decrease in the peak onshore velocity with increasing amount of debris was observed for debris that undergoes an initial rotation. The peak onshore velocity was nearly independent of whether the initial motion was purely translational or a combination of rotation and translation.
出版年：	2015
论文唯一标识：	P-108Y2015V141N01006
英文栏目名称：	Technical Papers
doi：	10.1061/(ASCE)WW.1943-5460.0000267
期刊名称：	Journal of Waterway, Port, Coastal, and Ocean Engineering
拼音刊名(出版物代码)：	P-108
卷：	141
期：	01
页码：	39-52