Articles | Volume 7, issue 2
Earth Syst. Dynam., 7, 453–467, 2016
https://doi.org/10.5194/esd-7-453-2016
Earth Syst. Dynam., 7, 453–467, 2016
https://doi.org/10.5194/esd-7-453-2016

Research article 10 May 2016

Research article | 10 May 2016

Alluvial plain dynamics in the southern Amazonian foreland basin

Umberto Lombardo

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Cited articles

Aalto, R. and Nittrouer, C. A.: 210Pb geochronology of flood events in large tropical river systems, Philos. T. Roy. Soc. A, 370, 2040–2074, https://doi.org/10.1098/rsta.2011.0607, 2012.
Aalto, R., Dunne, T., Nittrouer, C. A., Maurice-Bourgoin, L., and Montgomery, D. R.: Fluvial transport of sediment across a pristine tropical foreland basin: channel-floodplain interaction and episodic floodplain deposition, in: The Structure, Function and Management Implications of Fluvial Sedimentary Systems, Wallingford, UK, IAHS Publ. no. 276, 339–344, 2002.
Aalto, R., Maurice-Bourgoin, L., Dunne, T., Montgomery, D. R., Nittrouer, C. A., and Guyot, J.-L.: Episodic sediment accumulation on Amazonian flood plains influenced by El Niño/Southern Oscillation, Nature, 425, 493–497, https://doi.org/10.1038/nature01990, 2003.
Ashworth, P. J. and Lewin, J.: How do big rivers come to be different?, Earth-Sci. Rev., 114, 84–107, https://doi.org/10.1016/j.earscirev.2012.05.003, 2012.
Ashworth, P. J., Best, J. L., and Jones, M.: Relationship between sediment supply and avulsion frequency in braided rivers, Geology, 32, 21–24, https://doi.org/10.1130/g19919.1, 2004.
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This paper analyses the behaviour of 12 tributaries of the Río Mamoré and their influence on alluvial plain dynamics. These rivers are extremely active: between 1984 and 2014, 7 of these 12 rivers underwent a total of 41 crevasses and 29 avulsions. Most of the sedimentary load of these rivers is deposited on the alluvial plains before they reach the Mamoré. Crevasses and avulsions are not controlled by ENSO cycles, but rather are the result of intrabasinal processes.
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