Simulation of debris flows in the watershed of the Putih River, Indonesia using SIMLAR 2.1

In 2010, the eruption of Mount Merapi produced a huge volcanic material for debris flows. One area affected by the debris flows is the watershed of Putih River. To predict the impact caused by debris flows can be done by using software such as the Simulation Lahar (SIMLAR) 2.1. In this paper, debris...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2021-12, Vol.930 (1), p.12034
Main Authors: Ikhsan, J, Ardiansyah, R, Legono, D
Format: Article
Language:English
Subjects:
Dam construction
Dams
debris
Debris flow
Detritus
Hydrologic data
Landslides & mudslides
putih river
Rainfall
River beds
Rivers
Simlar 2.1
Simulation
Watersheds
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Summary:In 2010, the eruption of Mount Merapi produced a huge volcanic material for debris flows. One area affected by the debris flows is the watershed of Putih River. To predict the impact caused by debris flows can be done by using software such as the Simulation Lahar (SIMLAR) 2.1. In this paper, debris flow modelling will be carried out using SIMLAR 2.1 in conditions without sabo dams and using sabo dams. This simulation aims to determine the effectiveness of the sabo dams in reducing the impact of debris flows. The data used are rainfall data, DEM and sediment data in Putih River. The results show that the sabo dam building can slow down the velocity of debris flow. In addition, sabo dams also function as a barrier to riverbed erosion in the Putih River watershed. Based on the results above, it can be concluded that SIMLAR 2.1 can predict the impact of debris flows in the Putih River watershed.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/930/1/012034