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Journal : JURNAL SAINTIS

Evaluasi Kinerja Breakwater Terhadap Gelombang di Pantai Tanjung Medang Kecamatan Rangsang Kabupaten Kepulauan Meranti: Evaluation of Breakwater Performance Against Waves At Tanjung Medang Beach, Rangsang District, Meranti Islands Regency Azima, Fauzan; Harmiyati; Agus, Firdaus; Zaenal Muttaqin, Muchammad
JURNAL SAINTIS Vol. 23 No. 01 (2023)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2023.vol23(01).25225

Abstract

[IN] Pantai Tanjung Medang di Kabupaten Kepulauan Meranti mengalami abrasi dan kerusakan akibat gelombang besar, mengancam pemukiman dan pelabuhan. Untuk mengatasinya, dibangun pemecah ombak (breakwater). Namun, seiring waktu dan kenaikan muka air laut, kinerja breakwater dinilai tidak lagi maksimal, terutama saat pasang besar. Penelitian ini bertujuan mengevaluasi kinerja breakwater eksisting dengan menganalisis karakteristik gelombang. Metode yang digunakan adalah hindcasting gelombang berdasarkan data angin 10 tahun dari BMKG Tanjung Balai Karimun untuk mendapatkan tinggi, periode, dan transformasi gelombang. Analisis dilanjutkan dengan penentuan elevasi muka air laut menggunakan metode Admiralty, serta analisis run-up dan overtopping gelombang. Hasil analisis menunjukkan bahwa gelombang dominan berasal dari arah timur laut dengan ketinggian di atas 1 m, menjadikannya gelombang destruktif. Pada kondisi muka air tertinggi (HHWL), breakwater setinggi 3 m mengalami overtopping dari berbagai arah (nilai run-up tertinggi 2,25 m dari utara), sehingga tidak sepenuhnya aman meskipun masih efektif memecah gelombang. Sementara itu, breakwater setinggi 1,6 m sudah tidak efektif dalam mereduksi energi gelombang yang datang. [EN] Tanjung Medang Beach in Meranti Islands Regency has experienced abrasion and damage from large waves, threatening settlements and the local port. A breakwater was built to mitigate this issue. However, over time, due to changing natural conditions and rising sea levels, its performance is considered suboptimal, especially during high tides. This study evaluates the existing breakwater's performance by analyzing wave characteristics. The method involves wave hindcasting based on 10 years of wind data from BMKG Tanjung Balai Karimun to determine wave height, period, and transformation. The analysis is supplemented by determining the sea level elevation using the Admiralty method, followed by a run-up and overtopping analysis. The results indicate that the dominant waves come from the northeast with heights exceeding 1 m, classifying them as destructive waves. At the highest water level (HHWL), the 3 m high breakwater experiences overtopping from various directions (with the highest run-up value of 2.25 m from the north), rendering it not entirely safe, although it remains effective at breaking incoming waves. Meanwhile, the 1.6 m high breakwater is no longer effective in reducing wave energy.
Co-Authors .M.S, Zarlis Adamsyach Prana Walidin Addion Nizori Adharani, Yana Agus, Firdaus Agusmal, Deni Ahani, Yulia Laelatul Ahmad Fahmi Lim, Ahmad Fakhzan Lim Aisman Aisman Aji, Irfan Pandu Alaika Amaly Khaira Alfaridzi, Eko Alima Rizkia Hsb Amini, Hijratun Anak Agung Gede Sugianthara Anak Agung Istri Sri Wiadnyani Anesti Viantika Gea Anwar Kasim April Laksana Apriliano, Yova Rezky Arafat, Andril Ardharani, Yana Arfian Suryasuciramdhan Ari Wibowo Sembiring Armenia, Armenia Aryadi Rachman Asmar, Sarah Asmira, Sepni Auzar Syarif Azhani Amran, Siti B P Priosoeryanto Budiyanto Budiyanto Cesar Welya Refdi D Muchtadi Daimon Syukri Dedi Masri Desniarti, Desniarti Dhiyandra Prasetya Gusti Diana Sylvi Diana Sylvi Dini Novita Sari Dwi, Gebi Sintia Erizal Erizal F R Zakaria F. Failisnur Fachrur Rozi Fachrur Rozi Fajratul Yanda Felga Zulfia Radiana Felga Zulfia Rasdiana Gimnastiar, Nazar Habibie, Muhammad Fadhil Haeruddin Hafid Haramain, Genta Harmiyati Hasbullah Hasbullah Hasbullah Hasbullah Hendri Nurdin Heni Pujiastuti Heriyenni Heriyenni Heriyenni, Heriyenni Hidayanti, Ermia Hijratun Amini Hijriyantomi Suyuthie Humaryanto, Humaryanto Ikram, A. Aiyul Indra Lasmana Tarigan Irzal Irzal Irzan, Muhamad Ismed Ismed Ismed Ismed Januana, Rosyada Karim, Ahmad Khaira, Bunga Silvana Khairul Fahmi Sagala Laila Ali Tanjung Lestari, Kurnia Liganti, Rani Lola Amalia Sibarani Lucia Saraswati Lucia Saraswati M Farhan Hidayatullah Madyawati Latief Magfirah, Magfirah Majahar Ali, Majid Khan Memanda, Freddy Metriadi, Metriadi Miati, Fenita Muhammad Alfiyansah Muhammad Iqbal Muhammad Zikri Mursyid Djawas Mutia Sari, Shinta Najwatul Khoiriah Neswati Neswati Netty Sri Indeswari Ninsix, Retti Novelina Novi Yanti, Silvia Novizar Nazir Novizar Novizar Novizar Novizar Novizar, Novizar Novridah Reanti Purba Nur Azizah Hrp Nurbaya Ambo, Sitti Okta Elviana Manurung Parlaungan Gabriel Siahaan Periadnadi Periadnadi Popy Meilina Purnama Dini Hari Qardhawi, Nadif Yusuf Rahma Aniq Aulia Rahmayani Rahmayani Rahmayani Rahmayani Rani Liganti Refky Genta Saputra Reni Koja Retti Ninsix Rhizqi Dwiputra Ramadhan Rici Elvinas Rina Yenrina Rini B RINI RINI Rini Rini Rini Rini Ririn Fatma Nanda Risanty, Rita Dewi Rivan Aprialdho Rizki Ananda Rully Mujiastuti Sahadi Didi Ismanto Sandonella Anggini Sarah Asmar Saraswati, Lucia Sari, Shinta Mutia Sayuti, Kesuma Seow, Eng Keng Sepni Asmira Sharla Setyawati Shinta Mutia Sari Silfeni Silfeni Siti Dhifah Umairah Supu, Ramli Surini Siswarjono Sutrisno, Mirza Syukri , Daimon Tuty Anggraini Ulsiani, Della Viantika Gea, Anesti Vlio Lina Monalisa Wan Ishak, Wan Rosli Wardah Sahrani Sibarani Wazzan, Huda Wellyalina, Wellyalina Welya Refdi, Cesar Yana Cahyana Yanti, Herina Yolanda, Milda Yuneita Anisma Yusra Yusra YUSRA YUSRA Zaenal Muttaqin, Muchammad Zahran, Fikry Muhammad Zarlis .M.S Zulkurnain, Musfirah