V = 



3(l-a)/ (l+o )" 



3p 



1/2 



(11) 



Where V =■ compressional velocity of sound (cm/sec) 

 o = Poisson's ratio 



n 



3 = compressibility of elastic media (cm /dyne) 

 p = density of elastic media (gm/cm-') 

 or, equivalently 



V = 



k + (4/3)m 



1/2 



(12) 



where k = bulk modulus of elasticity (dmes/cm ) 



]i = modulus of rigidity (dynes/cm ) 

 If rigidity is lacking (y'O) 



(k/p) 1/2 = (1/Bp) 1/2 



(13) 



where k = 1/3 



Bulk compressibility of a suspension may be considered as the additive 

 properties of the compressibility of the liquid plus that of the suspended 

 particles , i.e., 



6 = (1-n) 



+ n£ 



(14) 



where 



3 = bulk compressibility of sediment or elastic 

 media (cm /dyne) 



n = porosity of the sediment or media 

 3 S = compressibility of solid material (cm^/dyne) 

 3 W = compressibility of seawater (cm^/dyne) 

 Similarly, for the sediment wet density 



p = (1-n) p g + np w 

 where p = saturated bulk density of sediment (gm/cm J ) 

 p g = density of solid material (gm/cm~*) 

 p w = density of seawater (gm/cm^) 



(15) 



10 



