p< 



583 





3URFA0E 



lleicht of top of bubble 



X.'' 



8- 



G.GZ 



10 



12 





^lioi;;;'nt of bubble oentar 



'Hubble radius 



-^J- 



r 



A / 



■ \ / 

 \ / 



100 



200 



300 



Range of time of ^^^ ^^^^^j 

 roaximum damage 



Fig. 27. Movement of the bubble of a 200 gn charge of totryl 12 ft 

 below the sea indicated by parameters given in the text. The effect of 

 the surface and of the dairige gauge is neglected. 



