a A 
REFRACTED WAVES oe& 
<Cs 
SHORE CURRENT —> 
z ; 
OCC ee ee eee ee eee ee eee cece 
wea eate at ttt tates eee ee Fe Me wee tee eee ee ces eee 
— 
— 
—. = ——_— — 
eee 
peer eisiclelsieng. 
e ce 
e ee. 
fe 
ecccce 
SOOO OO UU Ol Bem yO O00 0 CODD OCD EOI OOULES 
eloleieicnat Tt) Wilt sl vPleleteiereseien, 
eoe 
°° 
°° 
®eoe 
FIGURE 3. SKETCH MAP OF BEACH WITH WAVES APPROACHING 
AT AN ANGLE, TO ILLUSTRATE SIMULTANEOUS CROSS-BEACH 
AND ALONG-BEACH COMPONENTS OF MOTION 
BEACH FIRMNESS 
lO= FIRM; O= SOFT 
WATER _EDGE 
BERM CREST 
50 FEET 
FIGURE 4. GENERALIZED CONTOUR-TYPE MAP OF BEACH FIRMNESS, 
SHOWING SYSTEMATIC CHANGES FROM SOFT TO FIRM SAND 
6 
