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Gaffar, Farida
Teknik Pengairan, Fakultas Teknik, Universitas Muhammadiyah Makassar
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Social Sciences Transportation Other

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Journal : journal of green complex engineering

 1 
Potensi Kerawanan Kenaikan Permukaan Air Laut di Kawasan Pesisir Kecamatan Paju’kukang Kabupaten Bantaeng Indriyanti; Farida Gaffar; Kasmawati; Nini Apriani Rumata
Journal of Green Complex Engineering Vol. 2 No. 1 (2024): Agustus
Publisher : Gio Architect

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59810/greenplexresearch.v2i1.126

Abstract

ABSTRAKWilayah pesisir merupakan kawasan dengan potensi besar untuk pembangunan, tetapi juga rentan terhadap bencana lingkungan, salah satunya kenaikan permukaan air laut. Penelitian ini bertujuan untuk mengidentifikasi karakteristik fisik dan potensi wilayah pesisir Kecamatan Paju’kukang serta menganalisis tingkat kerawanannya terhadap kenaikan permukaan air laut. Studi ini menggunakan metode campuran, dengan analisis deskriptif kualitatif dan analisis spasial berbasis sistem informasi geografis (GIS). Data dikumpulkan melalui observasi lapangan dan dokumen terkait, mencakup indikator seperti kemiringan lereng, tata guna lahan, ketinggian gelombang, kecepatan arus, angin, dan pasang surut. Hasil menunjukkan bahwa 60,3% wilayah memiliki tingkat kerawanan sedang, 25,5% memiliki kerawanan tinggi, dan hanya 14,1% yang tergolong rendah. Kerawanan tinggi umumnya terdapat di kawasan dengan tata guna lahan intensif, seperti permukiman dan kawasan industri. Faktor seperti kemiringan lereng rendah (0–8%) dan dinamika laut, termasuk ketinggian gelombang mencapai 1,2 meter, berkontribusi signifikan terhadap tingkat kerawanan ini. Aktivitas pembangunan di Kawasan Industri Bantaeng turut meningkatkan tekanan lingkungan, yang dapat memperburuk risiko di masa depan. Penelitian ini menegaskan pentingnya perencanaan tata guna lahan yang berkelanjutan untuk meminimalkan risiko bencana di kawasan pesisir. Temuan ini memberikan kontribusi penting bagi literatur terkait kerawanan pesisir di Indonesia dan dapat menjadi dasar untuk kebijakan mitigasi bencana yang lebih efektif. Studi lanjutan diperlukan untuk mengevaluasi dampak perubahan iklim jangka panjang dan efektivitas kebijakan tata ruang di kawasan pesisir. ABSTRACTCoastal areas are highly dynamic regions with significant environmental and economic potential, but they face increasing risks from sea level rise caused by climate change and human activities. This study aims to assess the physical characteristics, potential, and vulnerability of the coastal area in Paju’kukang Subdistrict, Bantaeng Regency, Indonesia, to sea level rise. A mixed-methods approach was employed, combining qualitative analysis for identifying influencing indicators and quantitative spatial analysis for mapping vulnerability. Data were collected through field observations and secondary sources, focusing on slope gradient, land use, wave height, currents, wind, and tides. The findings reveal that 60.3% of the area exhibits moderate vulnerability, 25.5% high vulnerability, and only 14.1% low vulnerability. Key factors include flat topography (slope gradient 0–8%), predominant land uses such as agriculture and aquaculture, and dynamic oceanographic conditions with wave heights reaching 1.2 meters during specific seasons. The development of the Bantaeng Industrial Park further increases land use intensity, potentially exacerbating vulnerability. These results underscore the urgent need for sustainable land-use planning to mitigate risks and protect coastal communities. By providing a detailed vulnerability map, this study contributes to disaster risk management and supports decision-makers in crafting effective mitigation policies. Future research should explore predictive models for long-term climate impacts and evaluate coastal zoning policies to enhance resilience against sea level rise.
Scenario-Based Design-Storm Runoff Attenuation by Infiltration Wells in the Tanralili Sub-Watershed Ilham Amring; Farida Gaffar; Amrullah Mansida
Journal of Green Complex Engineering Vol. 4 No. 1 (2026): August
Publisher : Gio Architect

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59810/greenplexresearch.v4i1.287

Abstract

This study evaluates design-storm surface runoff and an infiltration-well scenario for the Tanralili Sub-Watershed, South Sulawesi, Indonesia. Annual rainfall records for 1997–2018 from Tanralili, Tompobulu, and Batubassi stations were used to derive regional rainfall, design rainfall with Gumbel and Log-Pearson type III distributions, and short-duration intensity using the Mononobe equation. Peak runoff was estimated with the Rational method for eight land-cover classes. The no-well scenario used an 85.35% runoff factor and the infiltration-well scenario used 27.63%; these factors were treated as scenario assumptions rather than measured field efficiencies. Summed Rational-method discharge increased from 56.90 m³ s⁻¹ for the 2-year event to 95.65 m³ s⁻¹ for the 25-year event. At the 25-year return period, scenario discharge decreased from 82.49 to 26.71 m³ s⁻¹, with the largest absolute reduction assigned to mixed dryland agriculture (23.95 m³ s⁻¹). The results identify high-leverage locations for runoff control, but engineering deployment requires reconciliation of mapped areas, land-cover-specific runoff coefficients, field infiltration measurements, and event-based hydraulic validation before the scenario can be interpreted as operational performance.
Bed-Slope Amplification of Non-Cohesive Sediment Transport under Supercritical Open-Channel Flow Fayyed Fauzi; Akhmad Fikri; Farida Gaffar; Kasmawati
Journal of Green Complex Engineering Vol. 4 No. 1 (2026): August
Publisher : Gio Architect

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59810/greenplexresearch.v4i1.289

Abstract

Bed slope and discharge control the capacity of open-channel flow to mobilize sediment, yet their relative effects are often difficult to separate because bed-load transport is intermittent and empirical equations are sensitive to hydraulic context. This study quantifies the effects of bed slope and discharge on non-cohesive sand transport in a controlled tilting flume. Sand with a nominal diameter of 0.6 mm and a specific gravity of 2.71 was tested at bed slopes of 1.5%, 2.0%, and 2.5% under discharges of 252.92 and 391.42 cm³ s⁻¹. Three independent trials were conducted for each treatment combination, and trial means were analyzed using two-factor ANOVA on the logarithmic scale. Sediment transport increased consistently with both slope and discharge. Bed slope produced the stronger effect (p < 0.001; partial η² = 0.794), while discharge was also significant (p = 0.0086; partial η² = 0.450); their interaction was not significant. Excess bed shear stress explained 83.8% of variation among treatment means. Schoklitsch predictions were closer to measurements than the implemented Shields-based estimates, although both generally underestimated transport. The results show that modest slope changes can sharply amplify sediment mobility under supercritical flow.
Irrigation Serviceability under Seasonal Scarcity: Digital Water Balances and Canal Deterioration in Pamukkulu Nur Hikmah Amelia; Farida Gaffar; Indriyanti Azis
Journal of Green Complex Engineering Vol. 4 No. 1 (2026): August
Publisher : Gio Architect

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59810/greenplexresearch.v4i1.291

Abstract

This study evaluates whether Irrigation Service Agreement (ISA) commitments remain physically deliverable under seasonal water scarcity and canal deterioration in the Pamukkulu Irrigation Area, South Sulawesi, Indonesia. A descriptive quantitative design combined farmer questionnaires, field observations, and a 72-period five-day SIPASI water-balance series across six SCADA-supported secondary-canal service units covering 2,885 ha; the September–October 2026 periods were treated as planning projections rather than realized observations. Service performance was assessed through equity, adequacy, and reliability, while principal survey proportions were summarized with Wilson 95% confidence intervals. Mean intake requirement was 4,796.8 L s−1, whereas mean available discharge was 2,380.6 L s−1, equivalent to 49.6% of requirement. The mean K factor was 0.47; full-service conditions were identified in 19 of 72 periods, while severe-deficit conditions were identified in 31 periods. For the projected 1–11 September 2026 periods, available flow covered only 1.4–2.0% of intake demand. Farmers identified leakage as the dominant loss mechanism (72.7%), secondary canals as the highest-loss segment (60.6%), and downstream shortage as the main consequence (51.5%). The results support K-triggered scarcity rules, targeted secondary-canal maintenance, and tighter operational linkage among ISA, SIPASI, SCADA, and P3A.
Co-Authors A. Rizkhi Aulia SA AA Sudharmawan, AA Adelia Adelia Akhmad Fikri Alfianshar, Muh Almidar, Hesti Amrullah Mansida Andi Rini Septiani Andy Saputra Antaria, Sukmasari Anwar, Fitria Askar Fahresa Askar, Diah Ananda Asnita Virlayani, Asnita Asnita Virlayanti Awaliyah, Annisa Nurhikmah Aziz, Indriyanti Djunur, Lutfi Hair Farouk Maricar Fausiah Latif Fauzan Hamdi, Fauzan Fauziah Latif Fauziah Latif Fayyed Fauzi Fithriyah Arief Wangsa Hasmina Ilham Amring Indah Fadhilah Isha Indriyanti Indriyanti Azis Indriyanti Indriyanti Indriyanti Indriyanti Indriyanti Indriyanti, Indriyanti Isha, Indah Fadhilah Ismail Pawara Juliandro Juliandro Juliandro, Juliandro Kasmawati Kasmawati Kasmawati Kasmawati Kasmawati Kasmawati Kasmi, Kasmi Khafifah, Andi Nurul Lutfi Hair Djunur Mansida, Amrullah Maricar, Farouk Marupah Marupah Marupah, Marupah Marwa Maslinda Melin Muh. Albuharram Rasyidin Nur Muh. Azwal Al- Hidayat Muh. Nursalam Muh. Yunus Ali Muhammad Rivai MUHAMMAD SAID Muhammad Syafa'at S Kuba Muhammad Syafaat S. Kuba Mustari, Wardan Nasrah Nasrah Nenny Nini Apriani Rumata Nur Fath, Muhammad Nur Hikmah Amelia Nurnawaty Pawara, Ismail Pratama, Sofyan Rian Risal Agustiansa Samsir Septiani, Andi Rini Sri Fadilah Sukmasari Antaria Syamsiar, Syamsiar Trimalino, Tedy Wangsa, Fithriyah Arief Wangsa, Fitriyah Arief Zainal Djumali Zainuddin, Muh Amir Zainuddin, Muh Amir