Articles | Volume 19, issue 4
https://doi.org/10.5194/hess-19-1943-2015
https://doi.org/10.5194/hess-19-1943-2015
Research article
 | 
22 Apr 2015
Research article |  | 22 Apr 2015

Swath-altimetry measurements of the main stem Amazon River: measurement errors and hydraulic implications

M. D. Wilson, M. Durand, H. C. Jung, and D. Alsdorf

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Cited articles

Alsdorf, D., Lettenmaier, D., and Vörösmarty, C.: The Need for Global, Satellite-based Observations of Terrestrial Surface Waters, Eos, Transactions American Geophysical Union, 84, 269–275, https://doi.org/10.1029/2003EO290001, 2003.
Alsdorf, D., Bates, P., Melack, J., Wilson, M., and Dunne, T.: Spatial and temporal complexity of the Amazon flood measured from space, Geophys. Res. Lett., 34, L08402, https://doi.org/10.1029/2007GL029447, 2007a.
Alsdorf, D., Rodríguez, E., and Lettenmaier, D.: Measuring surface water from space, Rev. Geophys., 45, RG2002, https://doi.org/10.1029/2006RG000197, 2007b.
Bates, P. and De Roo, A.: A simple raster-based model for flood inundation simulation, J. Hydrol., 236, 54–77, https://doi.org/10.1016/S0022-1694(00)00278-X, 2000.
Berry, P. A. M., Garlick, J. D., Freeman, J., and Mathers, E.: Global inland water monitoring from multi-mission altimetry, Geophys. Res. Lett., 32, L16401, https://doi.org/10.1029/2005GL022814, 2005.
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Short summary
We use a virtual mission analysis on a ca. 260km reach of the central Amazon River to assess the hydraulic implications of potential measurement errors in swath-altimetry imagery from the forthcoming Surface Water and Ocean Topography (SWOT) satellite mission. We estimated water surface slope from imagery of water heights and then derived channel discharge. Errors in estimated discharge were lowest when using longer reach lengths and channel cross-sectional averaging to estimate water slopes.
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