Bedload flux in southern Brazilian basalt scarp

G. H. Merten; J. P.G. Minella

doi:10.5194/piahs-367-185-2015

Bedload flux in southern Brazilian basalt scarp

G. H. Merten, J. P.G. Minella

Civil Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

Frequently, to assess the life expectancy of Brazilian reservoirs, bedload flux has been estimated by using formulas (e.g. the Einstein equations) or by assuming that bedload represents a fixed percentage of the suspended load. This study was carried out to characterize the bedload flux on the basalt scarps of southern Brazil. The bedload was measured over the course of 12 stormflows. The results demonstrated that the bedload flux-streamflow relationship was adequately described by a potential mathematical function. Bedload flux selectively transported particles smaller than D50 surface and subsurface bedstream sediments. When considering the bedload flux-streamflow relationship, the flux ranged from a minimum of 0.24 g m^-1 s^-1 for a streamflow of 0.53 m³ s^-1 to a maximum of 44 g m^-1 s^-1 for a streamflow of 1.3 m³ s^-1. The percentage of bedload/suspended load varied between <1% up to 60%, and this variation was strongly associated with peak flow.

Original language	English (US)
Title of host publication	Sediment Dynamics from the Summit to the Sea
Editors	Samuel J. Bentley, Y. Jun Xu, Adrian L. Collins, Mike Stone, Mead A. Allison, Arthur J. Horowitz, Wayne D. Erskine, Valentin Golosov
Publisher	Copernicus GmbH
Pages	185-191
Number of pages	7
ISBN (Electronic)	9781907161452
DOIs	https://doi.org/10.5194/piahs-367-185-2015
State	Published - 2014
Event	International Symposium on Sediment Dynamics: From the Summit to the Sea, ICCE 2014 - New Orleans, United States Duration: Dec 11 2014 → Dec 14 2014

Publication series

Name	IAHS-AISH Proceedings and Reports
Volume	367
ISSN (Print)	0144-7815

Other

Other	International Symposium on Sediment Dynamics: From the Summit to the Sea, ICCE 2014
Country	United States
City	New Orleans
Period	12/11/14 → 12/14/14

Keywords

Brazilian basalt scarps
Maddock classification
bedload
hydropower
reservoir life expectancy
step-pool streams

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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Merten, G. H., & Minella, J. P. G. (2014). Bedload flux in southern Brazilian basalt scarp. In S. J. Bentley, Y. J. Xu, A. L. Collins, M. Stone, M. A. Allison, A. J. Horowitz, W. D. Erskine, & V. Golosov (Eds.), Sediment Dynamics from the Summit to the Sea (pp. 185-191). (IAHS-AISH Proceedings and Reports; Vol. 367). Copernicus GmbH. https://doi.org/10.5194/piahs-367-185-2015

Bedload flux in southern Brazilian basalt scarp. / Merten, G. H.; Minella, J. P.G.

Sediment Dynamics from the Summit to the Sea. ed. / Samuel J. Bentley; Y. Jun Xu; Adrian L. Collins; Mike Stone; Mead A. Allison; Arthur J. Horowitz; Wayne D. Erskine; Valentin Golosov. Copernicus GmbH, 2014. p. 185-191 (IAHS-AISH Proceedings and Reports; Vol. 367).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Merten, GH & Minella, JPG 2014, Bedload flux in southern Brazilian basalt scarp. in SJ Bentley, YJ Xu, AL Collins, M Stone, MA Allison, AJ Horowitz, WD Erskine & V Golosov (eds), Sediment Dynamics from the Summit to the Sea. IAHS-AISH Proceedings and Reports, vol. 367, Copernicus GmbH, pp. 185-191, International Symposium on Sediment Dynamics: From the Summit to the Sea, ICCE 2014, New Orleans, United States, 12/11/14. https://doi.org/10.5194/piahs-367-185-2015

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