Caracterização dos estilos fluviais da bacia hidrográfica Riacho Talhada - semiárido alagoano: contribuições à gestão hidrogeomorfológica

Abstract

The definition of watersheds as a spatial unit of management and planning has been fundamental for the studies of landscapes, especially in approaches aiming understanding its physiographic and morphological aspects, such studies also help the analyses related to hydro-environmental dynamics. In this context the present work used the theoretical-methodological approach of fluvial styles developed by Fryirs and Brierley (2000). The main objective of this research was to characterize and classify the contemporary fluvial dynamics of the Riacho Talhada basin. The geomorphological mapping of the study area, the fluvial compartmentalization, the profile of the main channel correlating with its geology and valley configuration and finally the classification of fluvial styles and mapping of land use at a detailed scale from drone images and field data were carried out. Therefore, 5 representative fluvial styles were mapped; from the applied methodology, data were obtained about the hydrosedimentological functioning of the Riacho Talhada basin and the morphology of its rivers that can be used to interpret the physical conditions of watersheds located in the northeast of Brazil, assisting in the creation of a data network for understand fluvial dynamics in this context, so that the results can assist the management of water resources and hydrological planning.