k 



0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 



f I T^<w^ , i«i*f I I I ft ft I 1^1? 



s» 



SILT-CLAY 



>A 



500 



o 

 o 



Ll_ 



< 



CO 



z 



X 



I— 



Q_ 

 LU 



1000 



1500 



2000 



A 

 /A 



B 



SAND-SILT 



A / A 



c/ 



V 



^ 



I ' I 



measurements from 

 literature 



first layer 



second layer 



third layer 



Figure 9. Attenuation of compressional waves (expressed as k in: oi^^j^ = kfj^j^^) 

 versus depth in the sea floor or in sedimentary strata. Symbols are layers in the sea 

 floor in 7 areas (from Neprochnov, 1971). 



37 



