Electronic Theses and Dissertation

Sampah yang mengalir ke laut dipengaruhi oleh kondisi hidrodinamika. Oleh karena itu, penting untuk memahami pola sebaran jejak debris menggunakan simulasi numerik lintasan partikel (particle tracking) di perairan Pulo Aceh. Tujuan dari penelitian ini adalah untuk menganalisa distribusi sampah laut dari sumber asalnya di sekitar Perairan Pulo Aceh berdasarkan model numerik. Penelitian di simulasikan di perairan Pulo Aceh, dan Muara Krueng Aceh dengan lintasan partikel menggunakan software MIKE 21 dari DHI (Danish Hydraulic Institute). Simulasi lintasan partikel sampah laut menunjukakan bahwa pada musim barat (Desember-Februari), patikel debris bergerak menuju perairan Andaman. Selama musim peralihan I (Maret-Mei), partikel sampah teramati terdampar di Pulau Teunom, pantai Lambaro dan Melingge, kemudian berada di sekitar pantai di Pulau Breueh pada saat musim timur (Juni-Agustus). Penyebaran sampah laut terbagi dua arah jalur lintasan saat musim peralihan II (September-November), yaitu menuju perairan Andaman dan Samudra Hindia. Pergerakan partikel-partikel sampah ini hanya sebagian kecil disebabkan oleh pergerakan arus yang berasal dari angin.

Kata kunci: pulo aceh, sampah laut, model numerik, musim barat, musim timur.

Marine debris flowing into the ocean is dependent by hydrodynamic conditions. Understanding the distribution patterns of debris tracks in the waters of Pulo Aceh requires numerical simulations of particle tracking. The study aims to analyze the distribution of marine debris from its original source around Pulo Aceh waters based on a numerical model. The research was simulated in the waters of Pulo Aceh and Krueng Aceh estuary using particle pathways using MIKE 21 software from DHI (Danish Hydraulic Institute). The simulation of the trajectory of marine debris particles reveals that during the west monsoon (December-February), debris particles moved towards to the Andaman waters. During the transitional season I (March-May), garbage particles were observed stranding on Teunom Island, Lambaro and Melingge beaches, then around the coast on Breueh Island during the east monsoon (June-August). The distribution of marine debris is divided into two directions during the transitional season II (September-November), namely towards the waters of the Andaman and Indian Ocean. The movement of these garbage particles is only partially caused by the movement of currents originating from the wind. Keywords: pulo aceh, marine debris, numerical models, west monsoon, east monsoon.