Tsunarms 



?! 



Q Z 



CM O 



-El < 



UJ 

 CO 



2.0 p 

 1.8 - 

 1.6 - 

 1.4 - 

 1.2 - 

 1.0 — 

 0.8 - 

 0.6 - 

 0.4 - 

 0.2 - 

 — 

 



L/R = 1.67 



1 2 3 



WAVELENGTH X/L 



Fig. 3, Ratio of two-dimensional to one- dimensional maximum wave 

 amplitude on beach, L, island diameter at ocean floor; R, 

 Island diameter at beach. 



ACKNOWLEDGMENT 



This work was supported In part by the Office of Naval 

 Research under contract NOOO 14-67-0298-0002 and in part by the 

 Division of Engineering and Applied Physics, Harvard University. 



REFERENCES 



i. Carrier, G. F. , "The Dynamics of Tsunamis, " to appear in the 

 Proceedings of the Summer Synnposium on Mathematlc Prob- 

 lems in Geophysics, 1970. 



2, Lauterbacher, C. C, "Gravity Wave Refraction by Islands , " 



J. Fluid Mechs. , Vol. 41, Part 3, pp, 655-672, April 1970. 



