(Solution Document) The refraction of waves in coastal systems is caused by a-waves crest encountering a shallower bed b-wave troughs encountering a shallower bed c-wave...

The refraction of waves in coastal systems is caused by

a-waves crest encountering a shallower bed

b-wave troughs encountering a shallower bed

c-wave crest hitting other wave crests

d-wave troughs hitting other wave troughs