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All Journal Jurnal Teknik Sipil Jurnal Review Pendidikan dan Pengajaran (JRPP)
Chaidar, Ana Nurganah
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Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Social Sciences Other

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Effect of Jetty to the Capacity of Bogowonto River Mouth, Kulon Progo Daerah Istimewa Yogyakarta Muhammad Dandy Kusuma; Mohammad Bagus Adityawan; Ana Nurganah Chaidar
Jurnal Teknik Sipil Vol 30 No 1 (2023): Jurnal Teknik Sipil
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2023.30.1.3

Abstract

Abstract. Bogowonto River is the main river in the Bogowonto watershed which is included in the Serayu Bogowonto River Area. In the dry season, the mouth of the Bogowonto river closes because sediment deposits accumulate at the river mouth, disrupting the river flow to the sea. At high tide, sediment holds the Bogowonto River flow because it impacts the backwater downstream of the Bogowonto river, causing flooding in several locations, especially around Yogyakarta International Airport. The flow capacity of the Bogowonto river is decreasing, causing flooding problems, so this study needs to do an analysis. Backwater analysis at the Bogowonto River estuary simulates the existing jetty in the HEC-RAS program. In contrast, simulated morphology change river was with two jetty scenarios using the DELFT3D program. Keywords: Sediment, flooding, backwater, estuary, jetty. Abstrak. Sungai Bogowonto merupakan sungai utama di DAS Bogowonto yang termasuk dalam Wilayah Sungai Serayu Bogowonto. Pada musim kemarau muara sungai Bogowonto menutup karena endapan sedimen menumpuk di muara sungai sehingga mengganggu aliran sungai ke laut. Pada saat pasang, sedimen menahan aliran Sungai Bogowonto karena berdampak pada bagian hilir sungai Bogowonto sehingga menyebabkan banjir di beberapa lokasi terutama di sekitar Bandara Internasional Yogyakarta. Kapasitas aliran sungai Bogowonto yang semakin berkurang sehingga menimbulkan permasalahan banjir, sehingga penelitian ini perlu dilakukan suatu analisis. Analisis backwater di muara Sungai Bogowonto mensimulasikan jetty eksisting dalam program HEC-RAS. Sebaliknya, simulasi perubahan morfologi sungai dengan dua skenario jetty menggunakan program DELFT3D. Kata-kata Kunci: Sedimen, banjir, backwater, muara, jetty.
RAPID IDENTIFICATION OF CLIMATE CHANGE IMPACTS ON THE WEST TARUM CHANNEL Dahlia, Lia; Suryadi, Yadi; Nugroho, Eka; Chaidar, Ana Nurganah; Hatmoko, Waluyo
Jurnal Review Pendidikan dan Pengajaran Vol. 7 No. 4 (2024): Vol. 7 No. 4 Tahun 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v7i4.32997

Abstract

There is no doubt that El Niño and La Niña phenomena, which are characterized by sea surface temperature (SST) anomalies in the equatorial Pacific Ocean, have significant impacts on global and regional climate. The Oceanic Niño Index (ONI), obtained from NOAA satellite imagery, is used to measure these SST anomalies. El Niño is characterized by an increase in sea surface temperature of more than 0.5°C above normal, while La Niña is characterized by a decrease in sea surface temperature of more than 0.5°C below normal. The strength of the anomaly determines whether the phenomenon is weak, moderate, strong, or very strong. El Niño and La Niña events cause various hydrometeorological disasters that directly impact rainfall and water availability. The Indonesian Maritime Continent, located between oceans, is particularly vulnerable to the impacts of these two phenomena. El Niño causes drought, while a positive ONI increases the intensity of rainfall. These phenomena have the potential to reduce rainfall, disrupt water supply, and exacerbate droughts by changing global weather patterns. This study will identify the impacts of El Niño events on rainfall and water availability in the West Tarum Canal, which covers Karawang, Bekasi, and parts of Jakarta. By understanding these impacts, we can develop effective adaptation strategies. A literature review will provide a comprehensive picture of rainfall and water availability in the era of climate change by analyzing data from previous studies.
Co-Authors Adityawan, Mohammad Bagus Lia Dahlia, Lia Muhammad Dandy Kusuma Nugroho, Eka Waluyo Hatmoko, Waluyo Yadi Suryadi