I 2 3 



Slope Of The Batter =-pj-=Cot.c< = 4- 



Slope Of The Batter =4r=Cot.o<=-|- 



FIGS. 3 AND 4 

 REFLECTION OF SWELL ON BATTERS OF CONSTANT SLOPE 

 TESTS a 



Note ; I. Experimenta' points corresponding to the same wave length-water depth ratio ore 

 connected by continuous curves. 



2. Comparative curves with the angular point were figured from equotions 2 and 3 

 utilizing an"intrinsic" reflection coefficient q =0.8 



3. Points morked P ore those given by Irriborren's formula. 



4. In the tests the octuol incident wove steepness was between 1/15 and 1/20. 

 Accuracy of measurements however was limited for smoller amplitudes. Therefore, for 

 purposes of computation wave steepness of 1/15 for short waves and 1/20 for long 

 waves were used. 



5. Segment marked S.T. with index number showing value of )^ is the Shoemaker and 

 Thijsse zone of transition between strong ond weak reflections, with limiting slopes 

 computed from the inequality - 0.35 x 2^ < Vh < 0.6 x Ik 



