1410 
7 
(MICROSECONDS) 
0.1! 0.2 0.3 0.4 05 06 07 08 0.9 
w'3/R(LB'Y FT) 
—O-—O- MEASURED T 
CURVE PREDICTED BY ACOUSTIC THEORY 
FIG.8 y 
DURATION, T, FOR VARYING W'YR 
WITH 
CHARGE AND GAUGES 4 IN. BELOW SURFACE 
UERL WOODS HOLE, MASS. 
zee 
