Amazon sediment transport and accumulation along the continuum of mixed fluvial and marine processes

Annual Review of Marine Science
By: , and 

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Abstract

Sediment transfer from land to ocean begins in coastal settings and, for large rivers such as the Amazon, has dramatic impacts over thousands of kilometers covering diverse environmental conditions. In the relatively natural Amazon tidal river, combinations of fluvial and marine processes transition toward the ocean, affecting the transport and accumulation of sediment in floodplains and tributary mouths. The enormous discharge of Amazon fresh water causes estuarine processes to occur on the continental shelf, where much sediment accumulation creates a large clinoform structure and where additional sediment accumulates along its shoreward boundary in tidal flats and mangrove forests. Some remaining Amazon sediment is transported beyond the region near the river mouth, and fluvial forces on it diminish. Numerous perturbations to Amazon sediment transport and accumulation occur naturally, but human actions will likely dominate future change and now is the time to document, understand, and mitigate their impacts.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Amazon sediment transport and accumulation along the continuum of mixed fluvial and marine processes
Series title Annual Review of Marine Science
DOI 10.1146/annurev-marine-010816-060457
Edition Online First
Year Published 2020
Language English
Publisher Annual Reviews
Contributing office(s) Pacific Coastal and Marine Science Center
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