Use of 137Cs activity to investigate sediment movement and transport modeling in river coastal environment

摘要: Conflicts between human and environment always triggered to sedimentation erosion problems within the coastal areas, Therefore understanding sediment transport processes in a river estuary waters was important when studying mobility environment. This article aims investigate of Kemaman River estuary, Terengganu Malaysia. In this article, it demonstrated that anthropogenic activities watershed, such as agriculture urbanization affected yield from watershed. Over four months observation (November 2008-February 2009), delivery suspended Estuary had increased by about 25%. Based on in-situ measurement 137Cs activity, measure activity ranged 5638-22421 cpm for backshore while foreshore 2655-13354 cpm. The mean values were 15153 6261 respectively with concentration, recorded 17 November 10 February 110.5-218.8 mg L-1. Using flow discharge data provided Drainage Irrigation Department (DID) revealed possible increasing trend particularly during monsoon season. Temporal analysis indicates season resulting over supply adjacent mouth causing difficulty fisherman navigate boats. broader context, study can underscores need address impacts flood Kemaman-Chendor system.