Depth in sediments (km) 



Acoustic impedance of medium 1 

 (gm/cm2 sec) 



Acoustic impedance of medium 2 

 (gm/cm z sec) 



Acoustic impedance of medium n 

 (gm/cm^ sec) 



Attenuation coefficient of seawater 



p w Densitv of seawater 



PI Saturated bulk densitv of medium 1 

 (gm/cm 3 ) 



P2 Saturated bulk density of medium 2 

 (gm/cm 3 ) 



o Polsson's ratio or stress 



ad Ratio of densitv of particles and of 

 suspending fluid 



Compressibilitv of elastic media 

 (cm^/dyne) 



Compressibilitv of solid material 

 (cm^/dyne) 



Compressibilitv of seawater (cm^/dyne) 



Strain 



T o> ^l Relaxation time 



Slope of lower interface with respect 

 to upper Interface 



Angular frequency 



8 Angle of incidence from the normal to 

 the surface (degrees) 



U Modulus of rigidity (dynes/cm ) 



Pd Dynamic rigidity (shear modulus) 

 (dvnes/cm2) 



u Operator dependent upon the tvDe of 

 wave used 



v Kinematic viscosity 



p Saturated bulk density of sediment or 

 density of elastic media 



pf Density of suspending fluid 



Pn-Psed Saturated bulk density of sediment 

 (gm/cm3) 



p s Density of solid material 



40 



