EFFECTS OF ENVIRONMENTAL PARAMETERS ON THE MORPHOLOGY OF THE BEACH CUSPS OF RODDICK PORT

Beach cusps are quasi-regularly spaced features in the swash zone. Cusps can change the form of the shoreline in a short period of time; however, if their embayment's depth and height grow too much, erosion of shoreline follows; if an increase in sedimentation in the seaward point horns causes sedimentary problems for near facilities and ports. Therefore, knowing about the formation and development of cusps can improve and complete the planning of future engineering projects and management of coastal areas. In this study, the formation and development of beach cusps of Roddick beach in the Chabahar city, Iran have been discussed. By using Mike 21 software and 18 scenarios, parameters that affect the change of cusps and the effect of theories have been investigated. The results show that beach Roddick has reflective and intermediate conditions that form the cusp in this city. Increasing wave height and period increases the size of cusp. For stormy oceans, there is erosive swash conditions with embayment deepening; therefore, the growing cusps and the formation of cusps support the edge wave theory. For monsoon storms, there are accretionary swash conditions with horn deposit; therefore, the growing cusps and the formation of cusps support the self-organization theory.