CREST-BREAKING TIME-LAPSE APPROACH FOR MEASURING BREAKER ANGLE

Estimation of breaker angle in a littoral environmental observation (L EO)program is still based on a visual method and therefore is subjecti ve. Breaker angles thus measured generally vary from person to person. In the absence of a sophisticated wave-direction recording instrument , a simple and practical method has been evolved based on the time lap se between the wave breaking progressively at two points along the cre st parallel to the shoreline. This method removes to a greater extent the subjectivity in observation, thereby making it a more reliable pra ctical procedure. The method can be readily adopted for field observat ion by coastal engineers.