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IJSTR >> Volume 9 - Issue 1, January 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Geospatial Simulation Placement Of Sediment Retaining Buildings In The Mamasa River Basin

[Full Text]

 

AUTHOR(S)

Sjaid S Fais Assagaf, Eddy Agus Muharyanto, A Sudarman

 

KEYWORDS

erosivity, erodibility, rectification, thematic, Sediment Retaining Buildings

 

ABSTRACT

Sediment Review (BPS) uses erosion simulations using geospatial simulations. The amount of erosion was analyzed using a general version released by the soil (USLE) using ArcGIS software version 9.2. Sources of data and maps obtained from relevant agencies. A satellite imagery map for the Mamasa watershed area obtained on 28 July 2009 was obtained from LAPAN. Data input is initiated by digitizing analogue maps and satellite imagery maps, where georeferenced processes have previously been made to rectify maps so that they become digital maps. The resulting digital map consists of USLE thematic maps (erosivity maps, erodibility maps, long slope maps, and land cover maps). The USLE thematic map is then overlaid resulting in an erosion map. The amount of erosion was obtained from the calculation of USLE attribute data. Sediment rates are calculated using the NLS formula (Sediment Release Ratio). The location and number of BPS are based on sediment rate and distribution. The results showed that erosion rates with very high criteria occurred on farmland and plantations. While the highest sediment rate occurred in Leko-01, Merang and Malobo-Lalaki Sub Watersheds. As many as 26 BPS points are scattered in 16 Sub Watersheds in the upstream, middle, and downstream areas of the Mamasa watershed.

 

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