Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • 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
A new approach for estimating suspended sediment yield
SMHI, Forskningsavdelningen, Hydrologi.
1999 (engelsk)Inngår i: Hydrology and Earth System Sciences, ISSN 1027-5606, E-ISSN 1607-7938, Vol. 3, nr 2, s. 285-294Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A semi-distributed conceptual model, HBV-SED, for estimation of total suspended sediment concentration and yield at the outlet of a catchment was developed and tested through a case study. The base of the suspended sediment model is a dynamic hydrological model, which produces daily series of areal runoff and rainfall for each sub-basin as input to the sediment routine. A lumped measure of available sediment is accumulated continuously based on a linear relationship between log-transformed values of rainfall and erosion, while discharge of suspended sediment at the sub-basin outlet is dependent on runoff and amount of stored available sediment. Four model parameters are empirically determined through calibration against observed records of suspended sediment concentration. The model was applied to a 200 km(2) catchment with high altitude differences in the tropical parts of Bolivia, where recorded suspended sediment concentrations were available during a two-year period. 10,000 parameter sets were generated through a Monte Carlo procedure to evaluate the parameter sensitivity and interdependence. The predictability of the model was assessed through dividing the data record into a calibration and an independent period for which the model was validated and compared to the sediment rating curve technique. The results showed that the slope coefficients of the log-transformed model equations for accumulation and release were much stronger than the intercept coefficients. Despite an existing interdependence between the model parameters, the HBV-SED model gave clearly better results than the sediment rating curve technique for the validation period, indicating that the supply-based approach has a promising future as a tool for basic engineering applications.

sted, utgiver, år, opplag, sider
1999. Vol. 3, nr 2, s. 285-294
HSV kategori
Forskningsprogram
Hydrologi
Identifikatorer
URN: urn:nbn:se:smhi:diva-1535ISI: 000081370600012OAI: oai:DiVA.org:smhi-1535DiVA, id: diva2:851601
Tilgjengelig fra: 2015-09-07 Laget: 2015-08-31 Sist oppdatert: 2018-01-11bibliografisk kontrollert

Open Access i DiVA

fulltext(1361 kB)148 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 1361 kBChecksum SHA-512
86259e7ce6ce3e518bc8a3ebe03cf13a37cb4cdcefa14e365f68fb7a66bd776ec2338ab21b381e26ba95ccfde27fa2019db698d221eb009591efc387501029e5
Type fulltextMimetype application/pdf

Av organisasjonen
I samme tidsskrift
Hydrology and Earth System Sciences

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 148 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

urn-nbn

Altmetric

urn-nbn
Totalt: 113 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • 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
v. 2.35.9
|