MORPHOLOGICAL CHANGES IN THE SERINGÃO CHANNEL, NORTHERN BRAZIL, FROM 1945 TO 2014

In fluvial systems, morphodynamics manifest through erosion, transport, and deposition processes, shaped by seasonal and hydrological variations, thereby modifying channel morphology. Conversely, in coastal environments, tidal influences introduce a diurnal element, further destabilizing channel morphology. The Seringão channel, situated in the northern region of Pará, provides a compelling illustration of these phenomena. Over the period from 1945 to 2014, estuarine morphodynamic processes have resulted in the displacement and abandonment of a meander within the main channel. This preliminary investigation delineates these changes across three temporal phases: i) 1945-1990, characterized by heightened sinuosity; ii) 1990-2005, marked by the expansion of point bars; and iii) 2005-2014, characterized by the emergence of a cut bank. The primary objective of this study is to illustrate these processes and their consequential morphological alterations.