Experimental study of debris transport driven by a tsunami-like wave: Application for non-uniform density groups and obstacles

2021 ◽  
Vol 166 ◽  
pp. 103867
Author(s):  
Hyoungsu Park ◽  
Myung-Jin Koh ◽  
Daniel T. Cox ◽  
Mohammad Shafiqual Alam ◽  
Sungwon Shin
Author(s):  
Hyoungsu Park ◽  
Myung-Jin Koh ◽  
Daniel T. Cox ◽  
Mohammad Alam ◽  
Sungwon Shin

Extreme coastal events like hurricanes and tsunamis often generate and transport debris, resulting in severe damage to civil infrastructure and often adversely affecting communities' resilience and recovery process. In particular, water-borne debris transported over the land often decreases critical facilities' functionality and block access for initial rescue and recovery. A better understanding of water-driven debris transport is essential to predict damages and losses on coastal communities and develop a mitigation plan to minimize those losses and improve the resilience against future extreme coastal events. In this paper, an experimental study of tsunami-driven debris advection over a flat testbed was conducted considering different density conditions of debris elements.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/yY5SmwQuIn8


Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.


1962 ◽  
Vol 5 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bruce Quarrington ◽  
Jerome Conway ◽  
Nathan Siegel
Keyword(s):  

1974 ◽  
Vol 126 (2) ◽  
pp. 243-248
Author(s):  
A WAKABAYASHI ◽  
T KUBO ◽  
K CHARNEY ◽  
Y NAKAMURA ◽  
J CONNOLLY

1963 ◽  
Vol 45 (3) ◽  
pp. 374-383 ◽  
Author(s):  
Donald C. McIlrath ◽  
George A. Hallenbeck ◽  
Hubert A. Allen ◽  
Charles V. Mann ◽  
Edward J. Baldes ◽  
...  
Keyword(s):  

1958 ◽  
Vol 34 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Henry D. Janowitz ◽  
Vernon A. Weinstein ◽  
Rhoda G. Shaer ◽  
James F. Cereghini ◽  
Franklin Hollander

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