Identification of Marine Debris Sources in Kuta Beach, Bali, Indonesia

Abstract

Maharta, I.P.R.F.; Radjawane, I.M.; Suprijo, T.; Park, H., and Hendrawan, I.G., 2021. Identification of marine debris sources in Kuta Beach, Bali, Indonesia. In: Lee, J.L.; Suh, K.-S.; Lee, B.; Shin, S., and Lee, J. (eds.), Crisis and Integrated Management for Coastal and Marine Safety. Journal of Coastal Research, Special Issue No. 114, pp. 594–598. Coconut Creek (Florida), ISSN 0749-0208. Kuta Beach is one of the beaches with the biggest tourist arrivals in Bali. In recent years Kuta beach has received shipments of marine debris from the Bali Strait. Kuta Beach area gets an average of piles of marine debris reaching ± 30 tons/day and the peak occurred in January 2014 which reached ± 1,700 tons. Previous studies only carried out simulations with sources of marine debris from outside the Bali Strait and the coast in Bali. This study aims to determine the marine debris that reaches Kuta Beach with the source of debris from rivers in the west season (January 2019). The Finite Volume Coastal Ocean Model (FVCOM) is used to obtain the circulation of current patterns and patterns of movement of particles by using the Lagrangian Particle Tracking module, with the sources of the debris from 8 river in Bali Strait. In general, the pattern of movement of currents in the Bali Strait at west season is dominantly moving towards the east due to the influence of the west monsoon winds. The simulation results show that particles that reach Kuta Beach are dominated by rivers that flow near Kuta Beach, with the river that gives the most debris is the Tukad Penet, which is 68.89% of the total marine debris that reaches Kuta Beach.