Article Per Year (5 Year)
p-Index From 2020 - 2025
3.241
P-Index
This Author published in this journals
All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Pengairan: Journal of Water Resources Engineering Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Teknika Jurnal Pengabdian Masyarakat untuk Negeri (UN-PENMAS) Jurnal Teknik Sumber Daya Air Jurnal Teknologi dan Rekayasa Sumber Daya Air
M. Amar Sajali
Teknik Pengairan Fakultas Teknik Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences Other

Published : 26 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 26 Documents
Search

 1   2   3 
Reproduction and Characterization of Sedimentation Phenomena in Tanjung Perak Port through Numerical Simulation Using Delft3D Camila, Adristi Nur; Murakami, Keisuke; Sajali, M. Amar; Haribowo , Riyanto
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 1 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.01.7

Abstract

Tanjung Perak Port in Surabaya, one of the biggest ports in Indonesia, faces significant sedimentation problems that can affect operational capacity. This research aims to investigate these sedimentation problems using a 3-dimensional numerical model with Delft3D software, analyzing wave, tidal, and topographic changes to recommend effective sediment management. This research focuses on Tanjung Perak Harbor in Surabaya, Indonesia, using Delft3D numerical modeling to analyze sedimentation phenomena and examine topography, tidal, wave, and sediment characteristics, and river inflow data from the Mas River and Lamong Rivers. This research divides the depth into three layers with the smallest grid size dx= 10 m and dy= 10 m. Sediment diameter data, used in this simulation with an average grain size (D50) of 0.28 mm from inside the port, will be simulated simultaneously with tidal and wave motion. This simulation is for 1 month using a scale factor of 12, making the simulation equal to 1 year. From the simulation results, the effect of wave movement is relatively small. At 3 locations in the Tanjung Perak port area, sedimentation with an average change in depth of 0.8 m/year was caused by sedimentation carried from the Lamon River and Mas River. Therefore, dredging recommendations are conducted to reduce sedimentation in the port area by constructing a jetty at the mouth of the Mas River. The results showed that the average depth increase changed to 0.4 m/year after the jetty was built, but some erosion occurred around the jetty, 0.0056 m/year.
Assessing Liquefaction Risk at Timika Steam Power Plant through Cyclic Stress Ratio Analysis Using Borehole Data Marsudi, Suwanto; Lufira, Rahmah Dara; Sajali, Muhammad Amar; Putra, Sebrian Bessely Mirdeklis; Asmaranto, Runi; Prasetyorini, Linda
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 1 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.01.9

Abstract

Energy infrastructure, particularly power plants, is critical in national and regional development. This study aims to determine the optimal placement and design of the Timika PLTU (power plant) by conducting comprehensive soil and rock investigations, focusing on seismic risks. The primary objective is to assess the geotechnical conditions of the site to ensure structural stability and safety in this high-seismicity zone. Key methods used in this study include borehole drilling, soil classification tests, and seismic hazard analysis. The soil at the site is classified as medium (SD) with Vs values ranging from 175 to 350 m/sec, and the seismic zone’s coefficient (Z) is 0.6, indicating significant seismic potential. The results reveal that specific design measures, such as sheet piles and retaining walls, are necessary to mitigate the risks of lateral collapse in areas with significant soil excavation. Furthermore, seismic design considerations were incorporated to improve the plant’s earthquake resistance. The findings of this study provide essential geotechnical data and practical recommendations, ensuring the safe and resilient construction of the PLTU Timika in a region prone to seismic activity while guiding future infrastructure projects in similar high-risk zones.
Comparison of Correlation, PBIAS and RSR between Monthly, Daily, and Hourly GPM Rainfall Data Setiyowati, Yunita Ayu; Harisuseno, Donny; Sajali, M. Amar
Jurnal Penelitian Pendidikan IPA Vol 11 No 6 (2025): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i6.11068

Abstract

Accurate precipitation data is critical for hydrological modeling, flood forecasting, and water resources planning. This study evaluates the performance of satellite-based rainfall estimates from the Integrated Multi-satellite Retrievals for GPM (IMERG) Final Run Version 06 by comparing them with ground-based observations from six stations in the Jatigede Reservoir catchment, West Java, Indonesia. The analysis covers the 2014–2023 period, aligning with the reliable availability of IMERG Final Run products, and examines three temporal resolutions: monthly, daily, and hourly. Statistical evaluation employed Pearson correlation coefficient (r), the ratio of RMSE to observed standard deviation (RSR), and Percent Bias (PBIAS). Results show strong agreement at the monthly scale (r = 0.84, RSR = 0.34, PBIAS ≈ +24%), suggesting suitability for long-term water resource assessments. However, performance declines at shorter timescales. At the daily scale, IMERG underestimates rainfall (PBIAS ≈ -27%) with moderate correlation (r = 0.24). The hourly scale shows the poorest performance (r = 0.10, RSR > 3.0, PBIAS < -50%), indicating limitations in capturing short-duration, high-intensity rainfall typical in tropical regions. These findings underscore the importance of temporal aggregation and bias correction when applying IMERG data for operational hydrology and flood modeling
Studi Potensi Energi Gelombang laut Di Pantai Selatan Malang Kabupaten Malang Dengan Menggunakan Aplikasi Numerik Delft3D Moch Rizky Sya'bana; Dian Sisinggih; M Amar Sajali
Jurnal Teknologi dan Rekayasa Sumber Daya Air Vol. 5 No. 2 (2025): Jurnal Teknologi dan Rekayasa Sumber Daya Air (JTRESDA)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtresda.2025.005.02.088

Abstract

Meningkatnya kebutuhan energi global akibat pertumbuhan penduduk, aktivitas ekonomi, dan perkembangan industri memerlukan alternatif energi berkelanjutan. Dengan lokasi geografis dan kondisi geologisnya, Indonesia memiliki potensi energi terbarukan yang signifikan, termasuk energi gelombang laut. Penelitian ini bertujuan menganalisis potensi energi gelombang di Pantai Selatan Malang, Jawa Timur, menggunakan pemodelan numerik Delft3D. Data ECMWF-Era 5 digunakan untuk mensimulasikan karakteristik gelombang dan menghitung potensi energi teoritis. Hasil penelitian menunjukkan bahwa wilayah ini memiliki sumber daya energi gelombang yang menjanjikan, dengan lokasi tertentu yang diidentifikasi sebagai area optimal untuk penerapan Wave Energy Converter (WEC). Studi ini memberikan wawasan berharga bagi pengembangan energi kelautan di masa depan dan mendukung transisi Indonesia menuju energi berkelanjutan.
Studi Perencanaan Saluran Transisi Pada Proyek Peningkatan Kapasitas Saluran Tarum Barat dengan Implementasi Building Information Modeling (BIM) Muchammad Zidan; Evi Nur Cahya; M Amar Sajali
Jurnal Teknologi dan Rekayasa Sumber Daya Air Vol. 5 No. 2 (2025): Jurnal Teknologi dan Rekayasa Sumber Daya Air (JTRESDA)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtresda.2025.005.02.095

Abstract

Peningkatan Kapasitas Saluran Tarum Barat merupakan proyek strategis untuk mendukung distribusi air bagi kebutuhan irigasi, domestik, dan industri. Salah satu tantangan utama dalam proyek ini adalah perencanaan saluran transisi yang berfungsi untuk mengoptimalkan perubahan geometri aliran guna mengurangi kehilangan energi dan menjaga stabilitas aliran. Penggunaan teknologi Building Information Modeling (BIM) dalam perencanaan infrastruktur hidraulik menjadi solusi untuk meningkatkan efisiensi dan akurasi desain. Penelitian ini bertujuan untuk menganalisis efektivitas implementasi BIM dalam perencanaan saluran transisi pada proyek peningkatan kapasitas Saluran Tarum Barat, terutama dalam aspek ketepatan desain berdasarkan teknis hidrolika. Metode yang digunakan dalam penelitian ini meliputi pemodelan tiga dimensi (3D) menggunakan software Autodesk Civil 3D untuk memvisualisasikan desain saluran transisi dan menganalisis kinerja hidrolikanya menggunakan software HEC-RAS. Simulasi hidrolika dilakukan untuk mengevaluasi efisiensi aliran serta mengidentifikasi potensi permasalahan dalam desain. Hasil penelitian menunjukkan desain penampang optimal untuk Saluran Transisi adalah penampang persegi dengan ukuran lebar 10 meter dan tinggi 3 meter. Selain itu, hasil penelitian menunjukkan bahwa implementasi BIM dapat meningkatkan ketepatan dalam analisis hidrolika, mempercepat proses perencanaan, dan mengurangi kesalahan desain. Selain itu, koordinasi antar pemegang kepentingan menjadi lebih efektif.
Perbandingan Pola Distribusi Hujan GPM dan ARR dalam Simulasi Banjir Desain Setiyowati, Yunita Ayu; Harisuseno, Donny; Sajali, M. Amar
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 31, Nomor 1, JULI 2025
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v31i1.72441

Abstract

This study evaluates the performance of Global Precipitation Measurement (GPM) satellite-based rainfall data in comparison to Automatic Rainfall Recorder (ARR) data in forming rainfall distribution patterns and assessing its impact on flood discharge simulation using the HEC-HMS model. Statistical validation was conducted using the Pearson Correlation Coefficient, the ratio of standard deviation of observations to RMSE (RSR), Percent Bias (PBIAS), and Mean Absolute Percentage Error (MAPE). The results show that GPM has a strong correlation with ARR (r = 0.875) and a low RSR value (RSR= 0.256), yet it exhibits a notable negative bias (PBIAS = –24.41%), indicating an underestimation of rainfall values. In contrast, simulations using ARR rainfall patterns produce peak discharges that closely match actual discharge records at the Jatigede Dam outlet, with an average deviation of less than 3% and a MAPE of 1.17%, categorized as very good. The GPM simulation produces peak discharges 13–16% higher than actual observations, with a MAPE of 14.53%, which still falls into the good category. These results suggest that while ARR provides higher accuracy, GPM remains a viable alternative source, especially in data-scarce areas, provided that appropriate calibration methods such as bias correction are applied. This study supports future research in satellite data calibration using machine learning and multivariate statistical approaches.
Co-Authors Abi Aulia Yanottama Aditama, Dimas Hafiz Anggara Wiyono Wit Saputra, Anggara Wiyono Wit Aufa Hanan A Beselly Putra, Sebrian Mirdeklis Camila, Adristi Nur Dewanti, Wahyuning Dian Sisinggih Dian Sisinggih Donny Harisuseno Donny Harisuseno Donny Harisuseno Ery Suhartanto Evi Nur Cahya Hadi, rafli mas Haribowo , Riyanto Indriana Vaninda Karin Irsam, Ramadhanti Mutiara Keisuke Murakami Laksono Trisnantoro Linda Prasetyorini Linda Prasetyorini Moch Rizky Sya'bana Mohammad Dahlan Firmansyah Muchammad Zidan Muh. Rivan Saranani Muhammad Ridho Abdillah Narendra, Narendra Agung Setya Virgosa Otta, Rhea Rachma Pitojo Tri Juwono R. Haryo Briantama Rahmad Aziz Saputra Rahmah Dara Lufira Reza Andrean Riyadi, Bagus Riyanto Haribowo Riyanto Haribowo Runi Asmaranto Setiyowati, Yunita Ayu Sofriansyah, Rafi Satria Sumiadi Sumiadi, Sumiadi Suwanto Marsudi Ussy Andawayanti Very Dermawan Wibowo, Hindrawan Tri Winnie Meilinda Dewi