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generated a transverse wave. The transverse wave affected the profile shape-- 
the shoreline became skewed, the depth over the shelf in the offshore zone 
increased laterally, and changes in the inshore zone progressed from one side 
of the tank to the other during the course of the experiment. 
The reflection coefficient, Kp, varied from 0.03 to 0.14 in the 6-foot 
tank and the average in the 10-foot tank varied from 0.11 to 0.24, with 
considerable lateral variation. Changes in Kp in the 10-foot tank correlate 
well with changes in the shape of the upper part of the offshore zone. 
The profile in the 6-foot tank reached equilibrium, while the profile in 
the 10-foot tank continued to change. 
2 UNCLASSIFIED 
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