Open Sandy Beach Morphology and Morphodynamic as Response to Seasonal Monsoon in Kuala Terengganu, Malaysia

International audienceUnderstanding beach morphology and morphodynamic changes is important in regions where there is a large amountof recreation and development. Kuala Terengganu beaches has many anthropogenic infastructure such as an extensionto an airport runway similar in design to a groin which affect morphology and morphodynamics in response to seasonalmonsoon storms. Seasonal monsoon storms are one of the most important controls on the cycle of erosion and accretionon beaches. Beach profile data and wave modelling were used to determine the response of five beaches on the northof Kuala Terengganu to Northeast and Southwest seasonal monsoons. The beaches along the Kuala Terengganu statecoast before the construction of the airport extension exhibited a classical morphodynamic response. This includeserosion during Northeast monsoon and accretion/recover during Southwest monsoon. The airport constructiondisturbed and changed normal coastal evolution. Two distinct sediment cells were generated, each having developed aproper morphodynamic response within the Northeast and Southwest monsoon wave regimes