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All Journal Omni-Akuatika Journal of the Civil Engineering Forum
El Ghifari, Muhammad Raka
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Environmental Science

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The Effectiveness of Groin Modifications to Reduce the Impacts of Indian Ocean Dipole (IOD)-induced Port Siltation in Adapting to Climate Change Romdani, Andhy; Amanulloh, Fahmi Rahmat; Mudatsir; El Ghifari, Muhammad Raka; Gusnadi, Zakwan; Putri, Tryantini Sundi; Empung; Al-Huseiny, Mohammad Syarif
Journal of the Civil Engineering Forum Vol. 11 No. 2 (May 2025)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.16683

Abstract

Climate anomalies significantly affect coastal hydrodynamics, influencing sediment transport processes. The interaction between waves and currents plays an important role in sediment transport, which is closely related to climate anomalies, particularly the Indian Ocean Dipole (IOD). Indonesia is currently facing severe threats from port siltation due to the impacts of climate change. Port siltation results from sediment transport and can reduce the effectiveness and safety of port activities. This study aims to investigate sediment transport processes at Titan Coal Port under the influence of the IOD in 2016 and 2019. This port is located on the western coast of Sumatera, where high waves from the Indian Ocean pose a risk. Groins and a breakwater have been installed to protect the port from littoral drift induced by southeastern longshore currents and waves. However, the study found that during the negative IOD in 2016, hydrodynamic conditions led to shallowing of the port basin and navigation channel due to longshore currents from the northeast. The methods used in this research include descriptive analysis (using ERA-5 data from the Copernicus Climate Change Service) and numerical modeling (using MIKE 21) with bed level change identification at several points after groin modification scenarios. The combination of tidal currents and waves primarily shaped current patterns in the study area. High-speed currents caused significant erosion upstream at the bed level of the port basin. However, modified groin installations effectively reduced flow velocity entering the port basin. Two modified groin installation scenarios were tested in the study area to alter existing coastal hydrodynamics and sediment transport patterns.
Exploring Coastal Green Infrastructure (CGI): A Promising Approach to Mitigating Climate Change-Related Disasters in West Java’s Southern Coast, Indonesia El Ghifari, Muhammad Raka; Romdani, Andhy; Amanulloh, Fahmi Rahmat; Empung, Empung; Putri, Tryantini Sundi; Mudatsir, Mudatsir
Journal Omni-Akuatika Vol 21, No 1 (2025): Omni-Akuatika May (in progress)
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2025.21.1.1207

Abstract

Coastal Green Infrastructure (CGI) is increasingly recognized as a nature-based solution to address climate-related challenges such as sea-level rise, coastal erosion, and flooding. However, there remains a lack of standardized and the implementation of CGI resolves the limitation of globally adaptable methods for identifying selecting optimal CGI implementation sites, particularly in tropical coastal regions with diverse environmental characteristics. This study aimed to develop an alternative assessment approach by constructing in assessing CGI potential, focusing on the CGI Coastal Protection Index and CGI Coastal Vulnerability Indices, specifically tailored to tropical coasts. The method incorporated ecological and physical indicators derived Index, with a specific emphasis on tropical coast. Using a comprehensive case study from remote sensing and the southern coast of West Java, the research combines literature review, spatial analysis and was applied to the southern coastal region of West Java, Indonesia, and decision-making frameworks to identify key indicators in developing these indexes. The findings reveal that this region is highly vulnerable to climate-induced coastal hazards, with insufficient existing protection and relatively low CGI implementation potential. By proposing a practical and location-sensitive assessment framework, this study fills a methodological gap in CGI research and offers. This study advances the nature-based coastal protection researches by providing a practical evaluation method of the CGI potential, addressing the existing research gap in tropical environments, and offering valuable insights for advancing coastal management strategies in tropical settings.Keywords: Coastal Green Infrastructure (CGI), climate change, coastal protection, coastal vulnerability, southern coast of West Java.
Co-Authors Al-Huseiny, Mohammad Syarif Amanulloh, Fahmi Rahmat Andhy Romdani, Andhy Empung Empung, Empung Mudatsir Mudatsir Mudatsir Putri, Tryantini Sundi Zakwan Gusnadi