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All Journal Jurnal Ecocentrism Dinamika Teknik Sipil: Majalah Ilmiah Teknik Sipil
Diah Valentina Lestari
Universitas Mahasaraswati Denpasar
Civil Engineering, Building, Construction & Architecture Energy Engineering Environmental Science

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Analisa Status Mutu Air Pada Musim Kemarau Berdasarkan Metode Indeks Pencemaran Di Tukad Yeh Poh, Kabupaten Badung Diah Valentina Lestari; Andhita Triwahyuni
Jurnal Ecocentrism Vol. 1 No. 1 (2021): Jurnal Ecocentrism
Publisher : Program Studi Teknik Lingkungan Unmas Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1092.912 KB)

Abstract

Tukad Yeh Poh is categorized as a sub-river basin unit which plays an important role for the irrigation purposes and daily life support for the surrounding areas. The water quality along the river is analyzed using Pollution Index (PI) method to compare nine parameters with the standard value class II, including seven chemical parameters (DO, COD, BOD, Pb, PO4, NO2, NO3, oil and fat) and microbiological parameter (Coliform) throughout three sampling points to represent the upstream, downstream and middle point. The measurement is following the administration area of Badung Regency during the dry season that is represented by June 2019. There are five chemical parameters showing a larger concentration compared to the standard value. Moreover, the PI calculation suggested that the upstream and middle point should be categorized as lightly polluted, while the downstream region labelled as moderately polluted.
Forecasting A Long-Term Landslide Hazard in Paweden and Kalilunjar Sub-District, Banjarnegara, Indonesia Lestari, Diah Valentina; Prasetyaningtiyas, Gayuh Aji
Dinamika Teknik Sipil: Majalah Ilmiah Teknik Sipil Vol. 17/No. 1/Juli 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/dts.v17i1.5682

Abstract

Climate change has been a global issue for the past decades. It has impacted numerous aspects in landslide, particularly in the slope stability. The soil mass rupture leads to damage to infrastructure and death. Thus, any prevention is urgently needed to minimize the risk.  Forecasting the hazards is part of disaster management. The Initial step of this action is forecasting the rainfall due to climate change for the next 20 years since 2010, given that most of the landslide hazards in Paweden and Kalilunjar are triggered by rainfall.  This study uses CORDEX-SEA to obtain the rainfall forecasting data as the input to simulate the slope stability. The rainfall seepage is performed to obtain slope safety factor by using Geo-studio. Two chosen sub-districts in Banjarnegara, Paweden and Kalilunjar, are expected to experience more extreme daily rainfall by the end of 2030 compared to 2010 conditions. This study also shows that all rainfall cases trigger a slope failure (FS<1.2). This study is expected to support the local government in deciding the next hazard mitigation plan.  
Co-Authors Andhita Triwahyuni Gayuh Aji Prasetyaningtiyas