Temporal trend of the suspended sediment transport of the Amazon River (1984–2016)

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Abstract

We discuss the claim that the Amazon River has been subjected to a noticeable increase in suspended sediment transport (SST) in response to both climate and land-use changes. To study this, both satellite imagery and in situ data were compiled to produce a 32-year time series (1984–2016) of suspended sediment concentration. Both parametric and nonparametric statistics were applied to examine the SST time trend. The results indicate that there has been no statistically significant increase in SST in the last 32 years, independent of the statistical approach. The results indicate that, over the last 32 years at the Óbidos station, in Brazil, a recurring pattern of increase and decrease in SST has occurred, rather than a unidirectional systematic trend. This further explains the increasing trend reported in the literature and indicates that short time series are not recommended for time trend analyses due to the large inter-annual variability.

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APA

Montanher, O. C., Novo, E. M. L. de M., & Souza Filho, E. E. de. (2018). Temporal trend of the suspended sediment transport of the Amazon River (1984–2016). Hydrological Sciences Journal, 63(13–14), 1901–1912. https://doi.org/10.1080/02626667.2018.1546387

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