Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Streamflow Calibration and Validation of SWAT2005/ArcSWAT in Anjeni Gauged Watershed, Northern Highlands of Ethiopia
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Mark- och vattenteknik, Vattendragsteknik.
Texas A & M University, Spatial Science Laboratory.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Mark- och vattenteknik, Vattendragsteknik.ORCID-id: 0000-0002-2342-2068
2006 (engelsk)Inngår i: Proceedings of the 4th International SWAT Conference, 2006Konferansepaper, Publicerat paper (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
2006.
Emneord [en]
Calibration, Ethiopia, Hydrology, Modeling, Sensitivity, Stream flow, SWAT, Validation
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-8630OAI: oai:DiVA.org:kth-8630DiVA, id: diva2:14003
Konferanse
International SWAT Conference, July 02-06, UNESCO-IHE, Delft, The Netherlands.
Merknad

QC 20101123

Tilgjengelig fra: 2008-06-03 Laget: 2008-06-03 Sist oppdatert: 2020-01-02bibliografisk kontrollert
Inngår i avhandling
1. Hydrological and sediment yield modelling in Lake Tana Basin, Blue Nile Ethiopia
Åpne denne publikasjonen i ny fane eller vindu >>Hydrological and sediment yield modelling in Lake Tana Basin, Blue Nile Ethiopia
2008 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Land and water resources degradation are the major problems on the Ethiopian highlands. Poor land use practices and improper management systems have played a significant role in causing high soil erosion rates, sediment transport and loss of agricultural nutrients. So far limited meas-ures have been taken to combat the problems. In this study a physically based watershed model, SWAT2005 was applied to the Northern Highlands of Ethiopia for modelling of the hydrology and sediment yield. The main objective of this study was to test the performance and feasibility of SWAT2005 model to examine the influence of topography, land use, soil and climatic condi-tion on streamflows, soil erosion and sediment yield. The model was calibrated and validated on four tributaries of Lake Tana as well as Anjeni watershed using SUFI-2, GLUE and ParaSol algo-rithms. SWAT and GIS based decision support system (MCE analysis) were also used to identify the most erosion prone areas in the Lake Tana Basin. Streamflows are more sensitive to the hy-drological response unites definition thresholds than subbasin discretization. Prediction of sedi-ment yield is highly sensitive to subbasin size and slope discretization. Baseflow is an important component of the total discharge within the study area that contributes more than the surface runoff. There is a good agreement between the measured and simulated flows and sediment yields with higher values of coefficients of determination and Nash Sutcliffe efficiency. The an-nual average measured sediment yield in Anjeni watershed was 24.6 tonnes/ha. The annual aver-age simulated sediment yield was 27.8 and 29.5 tonnes/ha for calibration and validation periods, respectively. The SWAT model indicated that 18.5 % of the Lake Tana Basin is erosion potential areas. Whereas the MCE result indicated that 25.5 % of the basin are erosion potential areas. The calibrated model can be used for further analysis of the effect of climate and land use change as well as other different management scenarios on streamflows and soil erosion. The result of the study could help different stakeholders to plan and implement appropriate soil and water conser-vation strategies.

sted, utgiver, år, opplag, sider
Stockholm: KTH, 2008. s. x, 34
Serie
Trita-LWR. LIC, ISSN 1650-8629 ; 2042
Emneord
SWAT, Lake Tana, Blue Nile, hydrological modelling, watershed modelling, MCE, SUFI-2, GLUE, ParaSol, streamflows, sediment yield, erosion, water balance, model calibration
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-4796 (URN)978-91-7415-026-1 (ISBN)
Presentation
V3, KTH, Teknikringen 72, Stockholm
Opponent
Veileder
Merknad
QC 20101123Tilgjengelig fra: 2008-06-03 Laget: 2008-06-03 Sist oppdatert: 2018-01-13bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Søk i DiVA

Av forfatter/redaktør
Setegn, Shimelis GebriyeDargahi, Bijan
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric

urn-nbn
Totalt: 208 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf