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Evaluation of the Effectiveness of Groin Buildings Against Erosion on Ujong Blang Beach Fran Cahya; Teuku Mudi Hafli; Fasdarsyah; Fadhliani; Nanda Savira Ersa; Yulia Prestika
Proceedings of International Conference on Multidisciplinary Engineering (ICOMDEN) Vol. 2 (2024): Proceedings of International Conference on Multidisciplinary Engineering (ICOMDEN)
Publisher : Faculty of Engineering, Malikussaleh University

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Abstract

Ujong Blang Beach is a dynamic area characterized by a variety of ecosystems. It serves a variety of purposes, including housing, tourism, and fishing. However, the coastline at Ujong Blang Beach, Lhokseumawe, is experiencing changes due to natural factors such as waves and sediment transport, causing erosion. This research aims to evaluate the erosivity and effectiveness of groyne structures in preventing erosion at Ujong Blang Beach. The methodology used involves 3D Delft numerical simulation using a grid size of 10 m x 10 m and a time period of 0.4 minutes. Input data for the Delft 3D simulation includes topography, bathymetry, tidal patterns, wave action, morphological factors, and sediment data. The simulation results show that Ujong Blang Beach experienced erosion, specifically, Region I Segment experienced erosion of around -40,277 meters, Segment II experienced erosion of around -29,122 meters, and Segment III experienced erosion of around -18,403 meters.
Pemodelan Dampak Perubahan Iklim terhadap Pergerakan dan Dinamika Garis Pantai di Susoh, Aceh Hafli, Teuku Mudi; Fasdarsyah, Fasdarsyah; Malasyi, Syibral; Sarana, David; Mukhlis, Mukhlis; Fauzan, Muhammad
Teras Jurnal : Jurnal Teknik Sipil Vol. 16 No. 1 (2026): Teras Jurnal
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v16i1.1357

Abstract

Abstrak   Wilayah pesisir memiliki potensi besar bagi pembangunan ekonomi, sosial, dan ekologi, namun pemanfaatannya masih terbatas dan menghadapi tekanan lingkungan yang meningkat. Di Provinsi Aceh, kawasan pesisir semakin rentan akibat perubahan iklim dan aktivitas manusia yang memicu kenaikan muka air laut, peningkatan frekuensi badai, abrasi, serta banjir rob. Salah satu wilayah yang terdampak adalah Pantai Susoh di Kabupaten Aceh Barat Daya yang memiliki fungsi penting sebagai kawasan wisata dan religius. Namun, abrasi terjadi hampir setiap tahun dan pada Oktober 2023 gelombang pasang akibat anomali iklim merusak lebih dari selusin rumah penduduk. Kondisi ini diperparah oleh banjir rob yang dipengaruhi penurunan muka tanah pasca gempa 2004. Penelitian ini menggunakan pemodelan numerik dengan metode morphological scale factor (morfac) untuk menganalisis kondisi eksisting dan memprediksi dinamika morfologi pantai jangka panjang. Hasil simulasi menunjukkan tren erosi berkelanjutan hingga 50 tahun mendatang dengan kemunduran garis pantai rata-rata ±200,19 m. Oleh karena itu, strategi mitigasi berbasis struktur pantai dan rehabilitasi ekosistem diperlukan untuk mengurangi risiko abrasi dan mendukung pengelolaan pesisir yang berkelanjutan.   Kata kunci: erosi pantai, mitigasi pesisir, morfac, pemodelan numerik, perubahan iklim   Abstrack   Coastal areas have significant potential for economic, social, and ecological development; however, their utilization remains limited and increasingly pressured by environmental changes. In Aceh Province, coastal regions are becoming more vulnerable due to climate change and human activities that contribute to sea level rise, increased storm frequency, coastal erosion, and tidal flooding. One of the affected areas is Susoh Beach in Southwest Aceh Regency, which plays an important role as a tourism and religious area. However, coastal erosion occurs almost every year, and in October 2023 storm surges triggered by climate anomalies damaged more than a dozen houses. This condition is further exacerbated by tidal flooding influenced by land subsidence following the 2004 earthquake. This study employs numerical modeling using the morphological scale factor (morfac) method to analyze existing conditions and predict long-term coastal morphological dynamics. The simulation results indicate a continuous erosion trend over the next 50 years, with an average shoreline retreat of approximately ±200.19 m. Therefore, mitigation strategies based on coastal protection structures and ecosystem rehabilitation are necessary to reduce erosion risk and support sustainable coastal management.   Keywords: Coastal erosion, coastal mitigation, morfac, numerical modeling, climate change
Co-Authors . Zulfan Abdan Syakura Abubakar Dabet Adzuha Desmi Ahmad Nayan Ali Nur Muhammad Zaidin Balatif Aljufri Aljufri Almahibi, Saif Amir, Fachrurozi Anjani, Mira Anjella, Eva Asnawi Azi Maulana Ikbal Azkia Salsabila Batari Putri Burhanuddin Burhanuddin Burhanuddin Bustami Bustami Cut Aulia Nebirizki Dahlan Abdullah David Sarana David Sarana David Sarana Erniati Ersa, Nanda Savira F Fahmi Fadhil Risky Ramadhana Fadhliani Fadhliani, Fadhliani Farhan Wini Sara Fasdarsyah Fasdarsyah Fasdarsyah Fazil, M Febriza, Fira Fran Cahya Hamzani Hamzani Harahap, Usnia Puada Hasibuan, Rani Adinda Melani Helmy, Iqbal Adinata Setia Helmy, Wesli Herman Fithra Ikhsan Maulana Imanullah Imanullah, Imanullah Indra Indra K Khairina Khairullah, K Khatami, Syahril Lis Ayu widari Lis Ayu Widari Lis Ayu Widari, Lis Ayu M FAUZAN M Fauzan M Muhammad M Mukhlis M, Mukhlis Maizuar Maizuar Malaysi, Syibral Mira Anjani Mirza Fahmi Mirza Fahmi Mirza Fahmi Mirza Fahmi Mirza, Ichsan Muhammad Muhammad fauzan Muhammad Muhammad Muhammad Muhammad Muhammad Reza Muhammad, Muhammad Mukhlis Mukhlis Mukhlis Mukhlis Mukhlis Mukhlish Muhammad Nur Musa Al'ala MUTHMAINNAH Noviyansyah, Bagas Nur Azura Lubis Nura Usrina Nurlaila, Rizka Nurul Islami, Nurul Putra, M. Afif Tri Putri, Batari Reza Putra Said Jalalul Akbar Said Jalalul Akbar Said Jalalul Akbar Sari Rama Indah Shadiqin, Imam Siti Ramadani Sofyan Sofyan Sofyan Suci Desna Suryati Suryati Syahri Ramadhan, Syahri Syamsiar, Syamsiar Syamsul Bahri Syibral Malasyi Syibral Malasyi Syibral Malasyi, Syibral Syibral Malaysi Wesli Wesli Yudho Andika Yulia Prestika