Literature Study of the Relationship between Coastal Problems and Beach Hydrodynamics (Case Study: Sanur Beach, Bali)

Abstract

The coast is a system that continues to adapt to environmental conditions, such as waves, currents and sediment supply. This process is called coastal dynamics, where the beach adjusts its profile to efficiently deal with wave energy and reduce the impact of erosion or damage. The beach profile is influenced by local beach hydrodynamic characteristics, such as beach slope and sediment thickness. Changes in coastal morphology can occur due to erosion or accretion, which can be identified through satellite image analysis and hydrodynamic modeling. Beach erosion problems, such as those that occur at Sanur Beach, can be overcome through a combination of mitigation techniques such as soft nourishments and groynes. In addition, hydrodynamic and sedimentation simulations using the CMS program can help understand coastal change patterns. In dealing with climate change, adaptation and coastal protection need to take into account increases in sea level, storm intensity and changes in rainfall patterns. In planning coastal protection, it is necessary to consider projected sea level rise and flexible design to reduce long-term risks and vulnerabilities.