Electronic Theses and Dissertation

Telah dilakukan penelitian mengenai pemetaan karakteristik sedimen dasar di perairan pesisir kawasan pria laot, sabang. penelitian ini bertujuan untuk memetakan karakteristik sedimen dasar di wilayah tersebut. pengambilan sampel dilakukan pada februari 2025 menggunakan purposive random sampling, dengan 22 stasiun yang tersebar di dua desa dengan karakteristik berbeda. analisis sedimen dilakukan menggunakan metode ayakan bertingkat (sieve shaker) dengan teknik ayak kering. selanjutnya, metode kuantitatif diterapkan untuk menganalisis data yang diperoleh. hasil analisis menunjukkan bahwa sedimen di area tersebut memiliki variasi ukuran yang berbeda-beda, yaitu kerakal (pebble) sebesar 17,23%, kerikil (granule) 15,50%, pasir sangat kasar (very coarse sand) 14,23%, pasir kasar (coarse sand) 14,50%, pasir sedang (medium sand) 22,12%, pasir halus (fine sand) 10,87%, dan pasir sangat halus (very fine sand) 4,23%. berdasarkan perhitungan nilai rata-rata, fraksi pasir sedang merupakan sedimen dominan di area bibir pantai studi, menunjukkan bahwa lingkungan tersebut memiliki energi sedang yang cukup untuk mengendapkan butiran berukuran ini. kata kunci : coring, purposive random sampling, ayakan bertingkat, kuantitatif, variasi

Research has been conducted on mapping the characteristics of bottom sediments in the coastal waters of the Pria Laot area, Sabang. This study aims to map the characteristics of bottom sediments in the area. Sampling was carried out in February 2025 using purposive random sampling, with 22 stations spread across two villages with different characteristics. Sediment analysis was carried out using the sieve shaker method with a dry sieving technique. Furthermore, quantitative methods were applied to analyze the data obtained. The results of the analysis show that the sediments in the area have different size variations, namely pebbles of 17.23%, gravel (granules) 15.50%, very coarse sand 14.23%, coarse sand 14.50%, medium sand 22.12%, fine sand 10.87%, and very fine sand 4.23%. Based on the average value calculations, the medium sand is the dominant sediment in the study beach area, indicating that the environment has sufficient moderate energy to deposit grains of this size. Keywords: Coring, purposive random sampling, sieve shaker, quantitative, variation