ABSTRACT
Beach morphology fl uctuations cover a wide range of time scales, varying from periods of hours (e.g., storms), to years and decades associated with long-term erosion trends. Different types of data collection methods have been used to compute the net deposition or erosion of sand on beaches. Coastal monitoring projects have employed different approaches for various monitoring purposes on spatial data acquisition, including bathymetric survey of the offshore sand banks, nearshore bathymetric surveys, elevation profi ling of beaches, photogrammetric digital surface modeling,
airborne laser-scanned cliff, and the beaches and surrounding coastline (Carter and Shrestha, 1997).
