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All Journal Jurnal Ilmu Sosial dan Humaniora Journal of Engineering and Technological Sciences Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Jurnal Teknik Sipil RACIC : Rab Construction Research Journal on Education JURNAL TEKNIK HIDRAULIK Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Journal of the Civil Engineering Forum Jurnal Teknik Sumber Daya Air Makara Journal of Technology
Arno Adi Kuntoro
Institut Teknologi Bandung
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Tsunami Early Warning System Based on Maritime Wireless Communication Aryanti Karlina Nurendyastuti; Mochamad Mardi Marta Dinata; Arumjeni Mitayani; Muhammad Rizki Purnama; Mohammad Bagus Adityawan; Mohammad Farid; Arno Adi Kuntoro; Widyaningtias
Journal of the Civil Engineering Forum Vol. 8 No. 2 (May 2022)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1552.707 KB) | DOI: 10.22146/jcef.2878

Abstract

Tsunami buoy, linked to satellite, is commonly used as a tsunami early warning system but has been discovered to have several drawbacks such as the need for approximately 5 minutes to issue an early warning for a tsunami after detecting the initial wave as well as its fragility. It was also reported that the twenty-two buoys placed in the Indonesian seas from 2012 to 2018 were damaged and missing. Therefore, this study proposes a new method for tsunami early warning by integrating ship-to-ship maritime wireless communication. It is important to note that vessels or fishing boats with over 30 GT have the ability to travel more than 100 nmi (approximately 180 km) from the shoreline and can be equipped with point-to-multipoint VHF radio communication. Meanwhile, smaller boats on the fishing ground located approximately 2-5 km from the shore can use a WiFi network to communicate like a wireless mesh while the existing terrestrial network can be used for the ship-to-shore communication between boats and land stations. This system is expected to provide significant benefits for a fishing town such as Pangandaran, West Java, Indonesia which is directly facing Java Megathrust in the Indian Ocean. Therefore, a tsunami numerical simulation was conducted in this study using Shallow Water Equation which involved a hypothetical tsunami simulated from the possible fault source which is approximately 250 km from the source. Moreover, the vessel’s location was assumed to be in line with the fishing ground while the arrival time of the tsunami was estimated from the model to be 22.5 minutes and compared to the relay time of the proposed system which was approximately 5.4 seconds. This is faster in terms of delay than the existing system which relays information through satellite at approximately 5 minutes in an ideal condition and also has the ability to reduce the need for tsunami buoys.
Development of A 2D Numerical Model for Pollutant Transport using FTCS Scheme and Numerical Filter Maitsa, Tias Ravena; Hafiyyan, Qalbi; Adityawan, Mohammad Bagus; Magdalena, Ikha; Kuntoro, Arno Adi; Kardhana, Hadi
Makara Journal of Technology Vol. 25, No. 3
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study used the finite difference method to develop a numerical model for pollutant transport phenomenon simulation. Mathematically, the phenomenon is often described by the advection–diffusion differential equation, which is obtained from a combination of the continuity equation and Fick’s first law. The Forward Time Central Space (FTCS) scheme is one of the explicit finite difference methods and is used in this study to solve the model due to its simplicity in solving a differential equation. Yet, this method is currently unstable, which results in oscillations in the model. Thus, a numerical filter (Hansen) is added to the FTCS method to improve the stability of the model. The developed numerical model is applied to several 1D and 2D pollutant transport test cases. Simulation results are compared with those of existing analytical solutions to verify the developed model, and they show that the developed model can simulate the pollutant transport phenomenon well. Moreover, the numerical filter can increase the model stability.
Environmental Discharge Assessment Based on Hydrological Approach in Upper Citarum Watershed Ika Sari Damayanthi Sebayang; Indratmo Soekarno; M. Cahyono; Arno Adi Kuntoro
Jurnal Teknik Sumber Daya Air Desember 2022
Publisher : Himpunan Ahli Teknik Hidraulik Indonesia (HATHI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56860/jtsda.v3i1.42

Abstract

Di Indonesia, kawasan Sungai Citarum mengalami tantangan lingkungan yang cukup signifikan, antara lain meluapnya Sungai Citarum dan daerah aliran sungainya yang menyebabkan banjir, dan kekurangan air pada musim kemarau. Namun, tantangan utama adalah ketersediaan air di Citarum, karena debit yang mempengaruhi keseimbangan ekologi Daerah Aliran Sungai (DAS). Penelitian ini mengkaji beberapa metode penilaian debit lingkungan dengan pendekatan berbasis hidrologi diantaranya Tennant, Range of Variability Approach (RVA). Penelitian ini bertujuan untuk mengetahui besarnya aliran lingkungan (EF) yang diperlukan untuk menopang fungsi sungai dalam mendukung keseimbangan ekologi. Hasil penelitian menunjukan bahwa metode penilaian aliran lingkungan berbasis hidrologi merupakan langkah pertama yang diperlukan dalam perencanaan alokasi debit untuk perlindungan lingkungan. Ditunjukkan bahwa penggunaan fitur-fitur pelengkap dari teknik penilaian aliran lingkungan yang ada dapat digunakan untuk mencapai perkiraan aliran lingkungan yang dapat dibenarkan, bahkan dalam kondisi keterbatasan informasi terkait hubungan ekologi-hidrologi spesifik pada DAS Citarum. Penelitian ini bermaksud untuk mempromosikan perlunya perencanaan alokasi debit lingkungan dalam pengembangan DAS dan dapat dirumuskan ke dalam kebijakan nasional yang relevan. Kajian EF dilakukan dengan membandingkan 7Q10 dan Q95 dari kedua data pengamatan debit Nanjung dan pemodelan curah hujan-limpasan. Hasilnya ditemukan bahwa metode Weibull minima, hasil 7Q10 untuk pemodelan Sacramento, adalah 2,18 m3/s sedangkan AWLR Nanjung adalah 1,24 m3/s. Selain itu, nilai Q95 untuk Nanjung AWLR adalah 6,55 m3/s sedangkan hasil pemodelan curah hujan limpasan Sacramento adalah 7,06 m3/s. Besaran debit yang tersedia perlu dipastikan dapat mendukung kondisi ekologi di wilayah DAS Citarum Hulu. Hal ini relevan karena perbedaan tersebut tentunya mempengaruhi keseimbangan ekologi dan pengelolaan Sungai Citarum.
Kajian Banjir dan Perubahan Dasar Sungai Banger Akibat Penutupan Regulator Gate, Kota Pekalongan, Provinsi Jawa Tengah Eka Oktariyanto Nugroho; Sandhi Akhmad Juliadi; Indratmo Soekarno; Widyaningtias Widyaningtias; Arno Adi Kuntoro; Teguh Purnama Sidiq; Sella Lestari Nurmalia; Cayekti Widigdo
Journal on Education Vol 6 No 2 (2024): Journal on Education: Volume 6 Nomor 2 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i2.5095

Abstract

Dalam sistem pengembangan daerah Provinsi Jawa Tengah, Pemerintah provinsi menetapkan Kota Pekalongan sebagai salah satu wilayah strategis untuk pertumbuhan ekonomi. Meskipun memiliki potensi yang signifikan, Kota Pekalongan masih perlu mencari solusi untuk mengurangi banjir yang merupakan masalah berulang. Banjir di Kota Pekalongan disebabkan oleh gelombang pasang (rob) dan luapan banjir yang terjadi di sungai-sungai yang melintasi kota. Menurut Bappeda Kota Pekalongan, pada tahun 2020 terjadi genangan banjir seluas 1.177,86 hektar. Untuk mengatasi masalah banjir, pemerintah telah membuat beberapa infrastruktur pengendalian banjir di Kota Pekalongan, diantaranya regulator gate dan tanggul parapet. Pembangunan regulator gate ini bertujuan untuk mengatur aliran yang masuk ke sistem Sungai Loji, sehingga kedepannya seluruh aliran ke Sungai Banger sepenuhnya. Studi ini mensimulasikan banjir di wilayah Kota Pekalongan untuk menilai dampak pembangunan regulator gate dan tanggul sungai khususnya di sekitar Sungai Banger menggunakan HEC-RAS 6.4 dengan dibagi menjadi 4 skenario. Simulasi dilakukan dengan debit banjir periode ulang 25 tahun dan 50 tahun. Hasil studi ini menunjukkan area terkena banjir sebelum pembangunan regulator gate adalah 710,06 hektar, dan setelah pembangunan regulator gate, area banjir berkurang menjadi 363,02 hektar. Banjir yang tersisa terjadi di muara Sungai Banger, tetapi setelah normalisasi penambahan tanggul parapet dilakukan, banjir di Kota Pekalongan dapat diselesaikan.
Prediksi Distribusi Sedimentasi Terhadap Usia Guna Waduk Ameroro, Sulawesi Tenggara Indradjati Rachmatullah; Dantje Kardana Natakusumah; Widyaningtias Widyaningtias; Arno Adi Kuntoro; Eka Oktariyanto Nugroho; Agung Permana; Herdy Setiawan; Dyah Widyaningrum
Journal on Education Vol 6 No 2 (2024): Journal on Education: Volume 6 Nomor 2 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i2.5104

Abstract

The Ameroro River experiences significant sedimentation rates from year to year, along with rapid land cover changes. Due to the considerable benefits of the Ameroro River for the sustainability of life in Konawe Regency, it was decided to construct the Ameroro Reservoir as a means to fulfill irrigation needs and provide raw water for the community. Given the high sedimentation in reservoirs in Indonesia, it rapidly accelerates the aging of the Reservoir. One of the issues is the inadequate representation of sediment distribution in the reservoir, reducing the effectiveness of sediment control and management in the Reservoir. Predictions using HEC-RAS 2D reveal the sediment distribution in the Ameroro reservoir at locations STA 13872 in the upstream river and STA 4446 at the inlet, which is 7.7 km from the main river length from the Reservoir's axis and 4.5 km from the inlet river length. Sedimentation rates, based on riverbed material modeling and land cover, show an influx of sediment into the reservoir at 1,192,015 m3/year, comprising 662,275 m3/year from the upstream river and 529,739 m3/year from the inlet river. Calculations using the sedimentation deposition composition method and Brune's trap efficiency method indicate that the original Reservoir's lifespan of 107 years will be reduced to 85 years, deviating by 22 years from the plan. This implies that the Reservoir will reach the end of its useful life sooner than anticipated.
Assistance in Designing Citarum River Cliff Protection to Control River Erosion in Atirompe Village, Majalaya District, Bandung Regency Rohmat, Faizal Immaddudin Wira; Ledowikj, Felix Joel; Rodiah, Siti; Rohman, Mutiara Indah Nur; Burnama, Nabila Siti; Darsono, Sri Legowo Wignyo; Kuntoro, Arno Adi; Farid, Mohammad; Nugroho, Eka Oktariyanto; Chaidar, Ana Nugranah
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 9, No 4 (2023): Desember
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpkm.86817

Abstract

Rivers are often used as a water source for agriculture, transportation, and water supply needs. One of the causes of riverbank damage is scouring the cliff's foot, which cannot withstand scouring currents. If not addressed immediately, it will cause more severe damage. Citarum River is one river that passes through Atirompe Village, Majalaya District. The riverbanks in the area have a risk of cliff failure. The study objective was to analyze the problem, design the protection, and calculate the budget. The hydrology and riverbank analysis of the Majalaya River has been performed. The steps were essential to analyze the depth and width of the scour caused by the flow of the Citarum River water. Sediment data were collected at three locations, namely the upstream, middle, and downstream of the river segment that will be reviewed. In data processing, to obtain a sediment rating curve, it is necessary to measure the flow velocity, which will later be calculated and used as the flow rate during Total Suspended Solid (TSS) data collection. Using the Hydrology Engineering Center – River Analysis System (HEC – RAS) 6.2 software, the calculations with the Ripley Equation were compared to obtain the scour depth. For the design alternative, constructing a steel sheet pile-type cliff protection structure is one form of planning to protect riverbanks. This study also analyzed the recapitulation of the budgeting for protecting the Citarum riverbanks in Atirompe Village, Majalaya District. Using a standardized unit price, the total cost for the protection is 1.8 billion rupiahs.
HIGH FLOW AND LOW FLOW FREQUENCY ANALYSIS OF CIKAPUNDUNG RIVER Suryadi, Cahya; Soekarno, Indratmo; Kardhana, Hadi; Kuntoro, Arno Adi
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 8, No 2 (2023): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.v8i2.7840

Abstract

Climate change that occurs in Indonesia, especially in the upstream and middle Citarum areas is marked by changes in rainfall. In addition to the phenomenon of climate change, an increase in the number of people that occur in an area will have an impact on land cover changes that will affect river flow, so the dominant parameters that cause changes in the flow between changes in rainfall and land cover changes need to be reviewed. This study aims to determine the effect of changes in rainfall and land cover changes on flood discharge and the shift of flow duration curve. The author chose 4 SUH methods, namely SUH Nakayasu, SUH Soil Conservation Service (SCS), SUH ITB-1 and SUH Snyder-Alexejev to analyze high flow, and 2 methods, namely the F.J. Mock and NRECA methods to analyze low flow. The results of the research analysis are land changes that occur does not have a major impact on changes in the value of runoff coefficient, flood discharge analysis for Cikapundung-Pasirluyu sub-watersheds found that changes in flood discharge are dominated by changes in rainfall.
Co-Authors Adityawan, Mohammad Bagus Agung Permana Ahmad Darul Alan Wijaya Argo, Teti Armiati Arumjeni Mitayani Aryanti Karlina Nurendyastuti Burnama, Nabila Siti Cahyono, Muhammad Cayekti Widigdo Chaidar, Ana Nugranah Dantje Kardana Natakusumah Darul, Ahmad Dasapta Erwin Irawan Deni Septiadi Dyah Widyaningrum Edy Anto Soentoro Edy Anto Soentoro Gondodinoto Eka Oktariyanto Nugroho Faizal Immaddudin Wira Rohmat Hadi Kardhana Hafiyyan, Qalbi Hendy Sumadi Hendy Sumadi, Hendy Herdy Setiawan Idham Riyando Moe Indradjati Rachmatullah Indratmo Soekarno Indratmo Soekarno Indratmo Soekarno Ingerawi Sekaring Bumi Joko Nugroho Ledowikj, Felix Joel M. Cahyono M. Syahril Badri Kusuma M. Syahril Badri Kusuma Magdalena, Ikha Maitsa, Tias Ravena Mochamad Mardi Marta Dinata Mohammad Farid Muhammad Cahyono Muhammad Rizki Purnama Novreta Ersyi Darfia Nurhayati, Yunie Pratama, Maryo Inri Rohman, Mutiara Indah Nur Sandhi Akhmad Juliadi Sebayang, Ika Sari Damayanthi Sella Lestari Nurmalia siti rodiah Soentoro, Edy Anto Sri Legowo Wignyo Darsono Suryadi, Cahya Teguh Purnama Sidiq Teti Armiati Argo Tias Ravena Maitsa Widyaningtias Widyaningtias Widyaningtias Widyaningtias, Widyaningtias Yunie Nurhayati