Planform dynamics of the Iquitos anabranching structure in the Peruvian Upper Amazon River

Alejandro Mendoza, 0000-0002-2479-9799; GABRIEL SOTO-CORTES, 0000-0003-1603-0354

Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/20.500.12222/166

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Campo DC	Valor	Lengua/Idioma
dc.contributor.author	Alejandro Mendoza, 0000-0002-2479-9799	-
dc.contributor.author	GABRIEL SOTO-CORTES, 0000-0003-1603-0354	-
dc.contributor.other	Abad, Jorge D.	-
dc.contributor.other	Frias, Christian E.	-
dc.contributor.other	Ortals, Collin	-
dc.contributor.other	Paredes, Jorge	-
dc.contributor.other	Montoro, Hugo	-
dc.contributor.other	Vizcarra, Jorge	-
dc.contributor.other	Simon, Cesar	-
dc.date.accessioned	2018-06-27T01:26:19Z	-
dc.date.available	2018-06-27T01:26:19Z	-
dc.date.issued	2016	-
dc.identifier.other	http://dx.doi.org/10.1002/esp.3911	-
dc.identifier.uri	http://hdl.handle.net/20.500.12222/166	-
dc.description	The upper reach of the Amazon River has a very dynamic morphology, with the highest rates of migration observed in the entire Amazon River. It has an anabranching channel pattern which alternates between a condition of single channel and anabranching structures; in particular, the anabranching structure near Iquitos City shows an interesting channel behavior. Its channels migrate at different rates, where there are processes of narrowing and widening, and also collision and development of new channels. The temporal evolution of the Iquitos anabranching structure is described during the period from 1985 to 2014. The study is carried out by using satellite images to track the migration patterns, which are contrasted to the underlying geological units in the valley. Bathymetry of the structure and several velocity transects were obtained during a field campaign prior to the 2012 historic flood event. This information allowed for numerical modeling in order to compute the hydrodynamic flow field that complements the temporal analysis, aiming to understand the planform migration patterns after the 2012 flood event. It is observed that the geological units play an important role in modulating the migration rates and planform development of the channels. The channels in the structure are in contention to be the main channel, which become the secondary channel after migration. This causes the channels to experience a rise in bed elevation and narrowing of the channel itself; if this trend continues for several more years, these channels will detach from the Iquitos anabranching structure, thus forming paleo‐channels. This geomorphic process is important for horizontal and vertical soil heterogeneity along the floodplain. In general, the analysis shows a complex interaction between the underlying geological units, flow structure, morphology of the bed and planform migration.	es_MX
dc.format	application/pdf	es_MX
dc.language	eng	es_MX
dc.publisher	Wiley	es_MX
dc.publisher	John Wiley and Sons	es_MX
dc.rights	Attribution-NonCommercial-NoDerivatives 4.0 Internacional	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/deed.es	es_MX
dc.rights.uri	Se autoriza la reproducción total o parcial de los textos aquí publicados siempre y cuando sea sin fines de lucro y se cite la fuente completa y la dirección electrónica de la publicación.	es_MX
dc.subject	CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA	es_MX
dc.title	Planform dynamics of the Iquitos anabranching structure in the Peruvian Upper Amazon River	es_MX
dc.type	article	es_MX
dc.rights.license	http://creativecommons.org/licenses/by-nc-nd/4.0/	*
dc.rights.license	info:eu-repo/semantics/restrictedAccess	es_MX
dc.subject.keywords	Anabranching Rivers	es_MX
dc.subject.keywords	River Migration	es_MX
dc.subject.keywords	Geological Modulation	es_MX
dc.subject.keywords	Amazon River	es_MX
dc.type.version	info:eu-repo/semantics/publishedVersion	es_MX
dc.coverage	SZ	es_MX
dc.audience	researchers	es_MX
dc.identificador.materia	1	es_MX
dc.source.other	Earth Surface Processes and Landforms (7) vol.41 (2016)	es_MX
dc.source.other	ISSN: 0197-9337	es_MX
Aparece en las colecciones:	Artículos Científicos

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