1405 
Ti 
(MICROSECONDS) 
—O—O—MEASURED T 
CURVE PREDICTED BY ACOUSTIC THEORY 
FIG. 6 
DURATION, T, PLOTTED AGAINST DEPTH, D, 
FOR 
CONSTANT GHARGE-TO-GAUGE DISTANCE, 45.6 _ IN. 
(ws /R =0.216) 
UERL WOODS HOLE, MASS. 
