Grain size distribution analysis of Lhong Beach, Aceh Province

Abstract

This paper discusses the horizontal and vertical distribution of sediments on the coast of Lhong Beach, Aceh Province. A total of 3 stations located along the coast were chosen to represent the research location. At each station, data collection was carried out twice, each in the lower swash zone (LSZ) and upper swash zone (USZ). Sediment sampling was carried out in November 2018. The coring method was applied vertically to a depth of 15 cm to obtain three sediment layers with the each layer of 5 cm thickness. The wet sieve technique was applied to separate each sediment sample based on the size of the grain. Sediment statistical analysis was carried out based on the Folk and Ward formula. The sediment conditions obtained for the USZ are sand medium; moderately well sorted; fine skewed to symmetrical; mesokurtic to leptokurtic. While for the LSZ, the condition of the sand medium is obtained; moderatedly to moderately well-sorted; coarse skewed; mesokurtic to leptokurtic.