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Journal : Journal of Environmental Engineering and Sustainable Technology

ANALYSIS OF POTENTIAL ENERGY OF SEA WAVES IN SOUTHERN WATERS OF MALANG USING GEOGRAPHIC INFORMATION SYSTEMS APPROACH Setyawan, Fahreza Okta; Sartimbul, Aida; Fuad, Mochamad Arif Zainul; Ussania, Qoirunnisa; Hidayatullah, Fathurrosyid; Haq, Nuril Annisa
Journal of Environmental Engineering and Sustainable Technology Vol 10, No 01 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2023.010.01.3

Abstract

Southern waters of Malang are one of the areas in the south of Java where some of its coastal areas have not been electrified. The purpose of this research is to determine the magnitude of wave energy potential in the waters of South Malang. The theoretical amount of wave energy is obtained through wave data processing (wave period, significant wave height, and wave direction) and the results are in the form of the wave energy value with the highest value in 2021 occurring in August with an average value of 40 kW /m - 50 kW/m while in 2022 the highest value occurs in July with an average value of 40 kW/m to 50 kW/m. The technical potential value of wave energy is calculated by adding the efficiency formula from AquaBuOY so that results with the highest technical wave energy potential value are obtained in 2021 in August with an average value of 40 kW/m - 50 kW/m while in 2022 the highest potential wave energy value occurs in July with an average value of 40 kW/m - 50 kw/m. Potential locations are determined based on theoretical and technical potential results and the suitability of placing AquaBuOY so that a station point that meets these criteria is obtained, namely at the 29, 30, and 34 where station 30 is the station that has the closest criteria to effectively installing buoys with the total theoretical energy is 4838.46 MW and technically it is 4354.61 MW in 2021 while in 2022 the total theoretical energy is 4387.95 MW and technically it is 3977.38 MW.
MODELING OF SEDIMENT TRANSPORT IN PANARUKAN PORT, SITUBONDO, EAST JAVA Fuad, Mochamad Arif Zainul; Wardani, Aisy Nur Isna
Journal of Environmental Engineering and Sustainable Technology Vol 11, No 01 (2024)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2024.011.01.9

Abstract

Sedimentation presents a significant challenge in port management. It poses a risk to arriving and departing ships, potentially causing them to sink. The shallowing of the previous port required the construction of the new Panarukan port pier. This project focuses on using sediment transport modeling to analyze sediment transport patterns, and measure the extent of sedimentation or erosion at Panarukan Harbor. The sediment transport modeling utilizes the MIKE 21 program, which includes various modules such as the hydrodynamic module, the spectral wave module, the sand transport module, and the mud transport module. The data used in this modeling includes depth information, coastline data, wave height and period measurements, river water discharge data, total suspended solids (TSS) measurements, and the average sediment grain size. The modeling was carried out over a five-month period during the rainy season, starting in October 2019 and ending in February 2020. Based on the modeling results, sedimentation occurred at the Sampean River Estuary, causing a significant increase in the bed level of 0.4 meters during the rainy season. The sediment transport pattern of the Sampean River Estuary is characterized by a flow rate of -4200 to 3600 m2/s towards the coast and a flow rate of -2800 to 2800 m2/s perpendicular to the coast. The movement of sediment in the water differs between high and low tides. The concentrations of Total Suspended Solids (TSS) vary from 0.01 to 0.13 kg/m3 or 10 to 130 mg/l.