942 
PRESSURE —TONS./ SQ.IN. 
hockwwave ; 
oe SS 
{ 2 3 4 5 6 7 8 
r DISTANCE FROM DETONATOR — INCHES 
FIGS. PRESSURE DISTANCE GRAPH. No.8. DETONATOR UNDERWATE 
Va Inferred from 
oblique incidence 
WATER VELOCITY — FT/SEC. 
2 3 
T DISTANCE FROM DETONATOR — INCHES 
FIG.6. RELATION BETWEEN DEPTH OF DETONATOR AND 
UPWARD VELOCITY Va OF WATER SURFACE 
IMMEDIATELY OVERHEAD, (a) AS OBSERVED AND 
(®) AS INFERRED FROM OBLIQUE JNCIDENCE 
WITH DETONATOR fin. DEEP 
