16 



V. P. GORBATOVA 



on which the sines of the angles of incidence with which we are concerned 

 are plotted against the quantities which interest us or quantities which differ 

 from these by having different multiphers. 



Fig. 1. 



The process of calculating the intensities of head waves can be sum- 

 marized as follows: 



1. Using the law of wave refraction we determine the sines of the angles 

 of incidence of the primary wave under consideration at all the interfaces: 



sm (Xi == 



^n, p 



01 2 3 0-'» 0-5 0-6 0-7 0-8 09 10 



Fig. 2. Curves for the multiplier Cg. 



2. From the ordinates of the curve (Fig, 2) which is characterized by the 

 parameter y^ = -^^ we take the value for the multipHer mth Cq at the 



^0, e 



point X — sin «„ 



^0, e 



