2019-08-302019-08-302012-01-16MEDEIROS FILHO, Lúcio Cardoso de. Análise das variações morfológicas ao longo do rio Amazonas através de imagens multisensores. Orientadora: Suzan Waleska Pequeno Rodrigues. 2012. 66 f. Trabalho de Curso (Bacharelado em Oceanografia) - Faculdade de Oceanografia, Instituto de Geociências, Universidade Federal do Pará, Belém, 2012. Disponível em: http://bdm.ufpa.br/jspui/handle/prefix/1859. Acesso em:.http://bdm.ufpa.br/jspui/handle/prefix/1859The basin of the Amazon can be considered a morphodynamic system, functions through the interaction of fluid dynamics, sediment transport and morphological changes. Gradients in sediment transport result in areas of erosion and deposition by changing the morphology. This new morphology leads to changes in hydrodynamics which can then enhance or mitigate these changes. This study aimed to detect changes along the Amazon River has as limit the city of Almeirim and Porto de Moz to its mouth, identifying and quantifying the changes in a period of 22 years (1986-2008), with intervals of about 10 years, associating the possible influence of physical agents that contributed to such changes. We used images optical of remote sensing (Thematic Mapper - TM of Landsat-5) and microwave (Phased Array type L-band Synthetic Aperture Radar) - PALSAR of satellite ALOS and the Satellite Synthetic Aperture Radar - SAR satellite of JERS-1 beyond the model digital elevation-DEM-Shuttle Radar Topography SRTM as secondary data for orthorectification of the images. In order to improve the analysis of the changes studied were acquired temporal information on rainfall, flow and tide of the study area which were then correlated in order to investigate their influence on results. There was a predominance of the accretion time scale analyzed with greater significance in the years 1995 and 2008. One of the causes of this increase may be related to sediment migration of sandbanks and reworking of sediments by spring tides that pull the sediments of the upper intertidal zone, transporting them to the intertidal zones of middle and lower. Previous studies have shown that the mouth of the Amazon River is predominantly subaqueous and water depth increases toward the coast apart slowly. This shallow depth contributes to high rates of sediment accumulation. Another important source that can justify the instability of accretion and sedimentary deposits is related to migration of fluid mud, which represents a high rate of sediment deposition for cohesion in a short period of time. Frequent occurrence of La Nina in recent years may also have contributed to high rates of river discharge and consequent increase in sediment deposition showing a predominance of accretion in the last decade.Acesso AbertoSensoriamento remotoVariações morfológicasDetecção de mudançasRio AmazonasCNPQ::CIENCIAS EXATAS E DA TERRA::OCEANOGRAFIATrabalho de Curso - Graduação - Monografia