Penentuan Debit Aliran di Muara Sungai Pawan Kabupaten Ketapang berdasarkan Parameter Kecepatan Arus dan Kedalaman Sungai
DOI:
https://doi.org/10.26418/pf.v7i3.38939Abstract
Debit aliran adalah volume air yang masuk ke badan sungai dalam setiap detik. Debit aliran sangat dipengaruhi oleh kecepatan arus dan kedalaman. Debit aliran di suatu perairan dapat digunakan untuk monitoring dan evaluasi sumber air bersih di suatu perairan. Semakin tinggi nilai debit aliran maka kualitas perairan akan semakin baik. Penelitian ini dilakukan untuk mengetahui hubungan kecepatan arus dan kedalaman rata-rata terhadap debit aliran. Nilai kecepatan arus dihitung dengan metode kecepatan arus tiga titik dengan pengambilan data pada kedalaman 0.8 D, 0.5 D, dan 0.2 D. Lebar sungai dihitung dengan mengurangkan koordinat akhir dengan koordinat awal lintasan kemudian di konversi ke dalam satuan meter (m). Kedalaman dihitung secara langsung dengan alat ukur sonar. Nilai kecepatan arus, lebar sungai dan kedalaman digunakan untuk menghitung luas penampang lintasan dan debit aliran dengan metode velocity area mid section. Diperoleh hubungan antara kecepatan arus dan kedalaman terhadap debit aliran berdasarkan pola turun naik grafik yang sama pada nilai kecepatan arus, kedalaman dan debit aliran. Korelasi antara nilai kedalaman dan debit aliran diperoleh dengan nilai koefisien korelasi logaritmik sebesar 0.9329 dengan persamaan logaritmik kontinu y=10426ln(x)-15477. Dari hasil penelitian dapat disimpulkan bahwa debit aliran di Sungai Pawan sangat dipengaruhi oleh besar nilai kecepatan arus dan kedalaman rata-rata pada sungai tersebut.References
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Date: 24-05-2023
Prisma Fisika
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