Amazon Sediment Transport and Accumulation Along the Continuum of Mixed Fluvial and Marine Processes.

Autor: Nittrouer CA; School of Oceanography, University of Washington, Seattle, Washington 98195, USA; email: nittroue@uw.edu, rws@ocean.washington.edu, ogston@uw.edu, atfricke@uw.edu.; Department of Earth and Space Sciences, University of Washington, Seattle, Washington 98195, USA., DeMaster DJ; Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, North Carolina 27695, USA; email: demaster@ncsu.edu., Kuehl SA; Virginia Institute of Marine Science, William and Mary, Gloucester Point, Virginia 23062, USA; email: kuehl@vims.edu.; Department of Geological Oceanography, Xiamen University, Xiamen 361005, China., Figueiredo AG Jr; Departamento de Geologia e Geofísica, Universidade Federal Fluminense, Niterói 24210-346, Brasil; email: afigueiredo@id.uff.br., Sternberg RW; School of Oceanography, University of Washington, Seattle, Washington 98195, USA; email: nittroue@uw.edu, rws@ocean.washington.edu, ogston@uw.edu, atfricke@uw.edu., Faria LEC; Instituto de Geociências, Universidade Federal do Pará, Belém 66075-110, Brasil; email: ercilio@ufpa.br., Silveira OM; Instituto de Geociências, Universidade Federal do Pará, Belém 66075-110, Brasil; email: ercilio@ufpa.br., Allison MA; Department of River-Coastal Science and Engineering, Tulane University, New Orleans, Louisiana 70118, USA; email: meadallison@tulane.edu., Kineke GC; Department of Earth and Environmental Sciences, Boston College, Chestnut Hill, Massachusetts 02467, USA; email: gail.kineke@bc.edu., Ogston AS; School of Oceanography, University of Washington, Seattle, Washington 98195, USA; email: nittroue@uw.edu, rws@ocean.washington.edu, ogston@uw.edu, atfricke@uw.edu., Souza Filho PWM; Instituto de Geociências, Universidade Federal do Pará, Belém 66075-110, Brasil; email: ercilio@ufpa.br.; Instituto Technológico Vale, Belém 66055-090, Brasil; email: pedro.martins.souza@itv.org., Asp NE; Instituto de Estudos Costeiros, Universidade Federal do Pará, Bragança 68600-000, Brasil; email: nilsasp@ufpa.br., Nowacki DJ; Pacific Coastal and Marine Science Center, US Geological Survey, Santa Cruz, California 95060, USA; email: dnowacki@usgs.gov., Fricke AT; School of Oceanography, University of Washington, Seattle, Washington 98195, USA; email: nittroue@uw.edu, rws@ocean.washington.edu, ogston@uw.edu, atfricke@uw.edu.
Jazyk: angličtina
Zdroj: Annual review of marine science [Ann Rev Mar Sci] 2021 Jan; Vol. 13, pp. 501-536. Date of Electronic Publication: 2020 Jul 07.
DOI: 10.1146/annurev-marine-010816-060457
Abstrakt: 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.
Databáze: MEDLINE
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