A stereoscopic method for rapid monitoring of the spatio-temporal evolution of the sand-bed elevation in the swash zone

被引：16
|
作者：
Astruc, D. [1 ,2 ,3 ,4 ]
Cazin, S. [1 ,2 ,3 ,4 ]
Cid, E. [1 ,2 ,3 ,4 ]
Eiff, O. [1 ,2 ,3 ,4 ]
Lacaze, L. [1 ,2 ,3 ,4 ]
Robin, P. [1 ,2 ,3 ,4 ]
Toublanc, F. [1 ,2 ,3 ,4 ]
Caceres, I. [5 ]
机构：
[1] Univ Toulouse, F-31400 Toulouse, France
[2] UPS, INPT, F-31400 Toulouse, France
[3] IMFT, F-31400 Toulouse, France
[4] CNRS, F-31400 Toulouse, France
[5] Univ Politecn Cataluna, Lab Engn Maritima, Barcelona 03034, Spain
来源：
COASTAL ENGINEERING | 2012年 / 60卷
关键词：
Swash zone; Stereovision; Morphodynamics; Bed evolution; SEDIMENT TRANSPORT; HYDRODYNAMICS; TOPOGRAPHY; TURBULENCE;
D O I：
10.1016/j.coastaleng.2011.08.007
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A stereoscopic technique is developed in order to measure the sand-bed elevation in the swash zone at the wave time-scale. The present technique allows one to perform highly resolved measurements both in time and in space. An accuracy and a precision of less than 300 mu m and 600 mu m, respectively, are obtained in each direction. This technique has been used during a large-scale wave flume experiment where an erosive process of a plane beach is studied. The stereoscopic technique allows one to accurately measure the long-term evolution of the beach profile. In addition, spatially dependent variability on shorten time-scales is observed featuring accretion as well as erosion at the wave time-scale. (C) 2011 Elsevier B.V. All rights reserved.
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页码：11 / 20
页数：10
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