ESTIMATION OF WASTE DISPOSAL POTENTIAL INDEX AND ITS PARTICLE MOVEMENT FROM RIVERS IN THE BALI STRAIT DURING WEST MONSOON

• Main Author: Tilangsari, Novita
• Format: Theses
• Language: Indonesia
• Subjects: Ilmu kebumian
• Online Access: https://digilib.itb.ac.id/gdl/view/74874
• Institution: Institut Teknologi Bandung

The issue of marine debris is a global issue. Indonesia, experiences phenomenon related to marine debris, for instance ocean waste that hits the south-west coast of Bali Island, which comes every west monsoon period. It has occured these few decades. Various prevention and handling efforts have been carried out such as research, regulations, and actions. However, it is still needed regarding effective prevention efforts. Hence, this study aims to observe the movement of marine debris particles released from the estuaries of the Bali Strait during the western monsoon (8th – 24th December 2020) by reviewing the parameters of population density, LULC, and economic activity as factors affecting the production of waste generation on land that some of them are not managed then accumulate in estuaries. By these parameters, an index estimate of the potential for waste generation is carried out to determine 12 rivers as the source of the release of marine debris particles. The results of particle tracking simulations by using the Lagrangian method in Delft3D software which produces a hydrodynamic model generated by tides and winds shows that only particles from the Bomo and Tukad Daya Rivers move out of the Bali Strait entrance. While other particles tend to move towards the east-south. Particles that come out of the Bomo River (Banyuwangi Regency) also has the longest trajectory, which is 227,23 km. While the shortest path is owned by particles from Tukad Penet, 31.11 km. In addition, no particles were seen from the estuaries in Banyuwangi Regency which reached the west coast of Bali Island