Analog Model Setup
Wave Tank Analog Experiment
This analog experiment consisted of the recreation of tsunami waves generated by landslides that occur above sea level. The primary focus of these tests was modeled after the Lituya Bay, Alaska tsunami which was generated by a large displacement of mass into the bay from an earthquake just off shore. The wave tank is made of plexiglass with a slide that can be removed quickly to allow a mass to enter the system very quickly and efficiently.
Fig.1 Tsunami Wave Tank
displays the dimensions of the wave tank used to create tsunami-like
waves. The tank was set on a
degree incline to simulate the run-up of a shoreline, which generally
low angles until reaching the end of the continental shelf and then
shoreline run-up. This particular experiment is derived to
just before it would run-up the side of steep wall, as in
Fig. 2 Removal of Wave Slide Fig 3 Dimensions of Lituya Bay. (http://www.dhisoftware.com/uc2001/Abstracts_Proceedigs/Papers01/036/036.htm)
Once a wave was generated, video capture allowed for analysis of wave formation and maximum amplitude with relation to the amount of mass introduced into the system shown Figure 4 and video in the model results section. The amounts of mass introduced into the system varied from 1787.5 cubic centimeters to 3287.5 cubic centimeters on increments of 500 cubic centimeters. These amounts of mass introduced are designed to understand the wave dynamics in the case of Lituya Bay, as well as developing an idea of how a wave dynamics change with varying mass influx into a system.
Fig. 4 Wave generated in the tank View of wave destruction (http://virtual.yosemite.cc.ca.us/ghayes/Lituya_Bay_Exercise.htm)
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