MODEL SIMULATION OF FLOATING PLASTIC DEBRIS IN PANGANDARAN BAY AND PENANJUNG BAY, WEST JAVA

• Main Author: Pandujati, Chris
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/81083
• Institution: Institut Teknologi Bandung

Stranded debris is a common sight to see around tourism spot such as Pangandaran Regency. This study aims to identify the movement of marine debris in form of floating plastic debris on Pangandaran bay and Penanjung Bay during west monsoon season (January 2021) and east monsoon season (July 2021) using DELFT3D model. The distance and last position of particles also become a special focus to see the potential of environmental polution which caused by debris that come from Pangandaran Beach, Batu Hiu Beach, Karang Tirta Beach, Piamari Beach and Karapyak Beach. Hydrodinamics simulation is made using input in form of bathymetry data from The General Bathymeric Chart of Oceans (GEBCO), tidal components from TPXO and 10 m wind direction and magnitude with temporal resolution of 1 hours and spatial resolution of 0.25ox0.25o from ERA5. The results of hydrodinamics simulation is compared with observation data from Badan Informasi Geospasial (BIG) Cilacap Station using Root Mean Square Error (RMSE) method which results in 7.4 of deviation. The simulations results show distribution patterns of debris particles tends to move towards east during the west monsoon season (January 2021). On the east monsoon season (July 2021), the debris particles distribution pattern has a tendency to move towards west. The particles movement indicate a strong influence of monsoon to local hydrodynamic condition. Based on the discontinue scenario, the time it takes for garbage particles to touch the coastline is 3 days during the western season for garbage particles from Karang Tirta Beach, 2 days during the western season and 8 days during the eastern season for garbage particles from Batu Shark Beach, 9 days during the western season and 8 days during the eastern season for garbage particles from Piamari Beach, and 15 days during the eastern season for garbage particles from Karapyak Beach.