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To what extent can a sediment yield model be trusted? A case study from the passaúna catchment, brazil

Sotiri, Klajdi 1; Hilgert, Stephan 1; Duraes, Matheus; Armindo, Robson A.; Wolf, Nils; Scheer, Mauricio B.; Kishi, Regina; Pakzad, Kian; Fuchs, Stephan 1
1 Institut für Wasser und Gewässerentwicklung (IWG), Karlsruher Institut für Technologie (KIT)

Abstract:

Soil degradation and reservoir siltation are two of the major actual environmental, scientific, and engineering challenges. With the actual trend of world population increase, further pressure is expected on both water and soil systems around the world. Soil degradation and reservoir siltation are, however, strongly interlinked with the erosion processes that take place in the hydrological catchments, as both are consequences of these processes. Due to the spatial scale and duration of erosion events, the installation and operation of monitoring systems are rather cost- and time-consuming. Modeling is a feasible alternative for assessing the soil loss adequately. In this study, the possibility of adopting reservoir sediment stock as a validation measure for a monthly time-step sediment input model was investigated. For the assessment of sediment stock in the reservoir, the commercial free-fall penetrometer GraviProbe (GP) was used, while the calculation of sediment yield was calculated by combining a revised universal soil loss equation (RUSLE)-based model with a sediment delivery ratio model based on the connectivity approach. For the RUSLE factors, a combination of remote sensing, literature review, and conventional sampling was used. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000132353
Veröffentlicht am 07.05.2021
Originalveröffentlichung
DOI: 10.3390/w13081045
Scopus
Zitationen: 8
Web of Science
Zitationen: 8
Dimensions
Zitationen: 8
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Wasser und Gewässerentwicklung (IWG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2073-4441
KITopen-ID: 1000132353
Erschienen in Water (Switzerland)
Verlag MDPI
Band 13
Heft 8
Seiten Art.-Nr.: 1045
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Nachgewiesen in Scopus
Dimensions
Web of Science
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