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All Journal JURNAL SIPIL STATIK Jurnal Teknik Pengairan: Journal of Water Resources Engineering
Yosua Aditya Ratu
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Civil Engineering, Building, Construction & Architecture Engineering

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ANALISA KARAKTERISTIK GELOMBANG DI PANTAI BULO RERER KECAMATAN KOMBI KABUPATEN MINAHASA Ratu, Yosua Aditya; Jasin, Muh. I.; Mamoto, Jeffry D.
JURNAL SIPIL STATIK Vol 3, No 1 (2015): JURNAL SIPIL STATIK
Publisher : JURNAL SIPIL STATIK

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Abstract

Pantai Bulo Rerer yang sangat berpotensi sebagai daerah wisata, berdasarkan pengamatan di lapangan ternyata telah mengalami perubahan fisik (kerusakan) pada daerah pesisir pantai. Kerusakan ini diakibatkan oleh proses dinamika pantai seperti abrasi yang berdampak buruk serta menimbulkan kekhawatiran bagi warga pesisir pantai tersebut. Oleh sebab itu dalam pengembangan dan pengamanan daerah pesisir serta perlindungan penduduk maka perlu pengetahuan mengenai karakteristik gelombang yang terjadi di pantai tersebut. Dalam penelitian ini dilakukan pendekatan teori dan analisis transformasi gelombang yang terjadi di kawasan pantai Bulo Rerer. Peramalan gelombang dihitung dengan metode hindcasting gelombang berdasarkan data angin selama 10 tahun dari stasiun BMG Winangun Stasiun Tondano untuk mendapatkan tinggi dan periode gelombang signifikan. Dari hasil perhitungan, gelombang di perairan Bulo Rerer didominasi oleh gelombang arah Selatan dengan gelombang maksimum terjadi pada bulan Agustus 2005 dengan  H = 1,56m dan T = 5,12det. Koefisien refraksi yang terjadi berkisar antara 0,8181 sampai 1,0087 dan koefisien shoaling yang terjadi berkisar pada 0,9003 sampai 5,143. Tinggi gelombang yang didapat dari hasil perhitungan berkisar pada 0,24m sampai 1,83m pada kedalaman 0,5m sampai 25,0m. Kata kunci: Pantai Bulo Rerer, karakteristik gelombang, refraksi, shoaling, gelombang pecah.
Study on Fulfilling Needs and Availability of Clean Water in Manado City in 2045 Mananoma, Tiny; Ratu, Yosua Aditya; Moningka, Frederiko Marchiano Imanuel
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 1 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.01.3

Abstract

Clean water is an essential element for human life. The need for water continues to increase along with population growth. Rivers are a good source of clean water. Understanding water availability in the river that we will use as a clean water source is very important. In 2022, Manado City will have a population of 454,606 people. This study aims to determine the water demand in Manado City in 2045 and whether the Tondano River will be able to meet the water demand by 2045. This research uses a quantitative method, where the data used includes Tondano River discharge data processed using the analysis of water resource availability and Manado City population data using exponential regression analysis. In 2045, the population is projected to reach 549,438 people. Water demand is calculated based on the domestic, non-domestic, and water loss sectors. The total water demand in 2045 was 1,860.08 liters per day. If the total water demand is added to the peak hour factor, the total water demand becomes 5,533.28 liters, while the mainstay discharge of the Tondano River for Q95 is 4,511.34 liters per day. It can be seen that in 2045, the Tondano River can still meet the clean water needs of the Manado community. However, if the peak hour factor for Q95 is added, the Tondano River cannot meet the clean water needs of the Manado people.
Co-Authors Jeffry D. Mamoto Moningka, Frederiko Marchiano Imanuel Muh. I. Jasin Tiny Mananoma