ANÁLISE DA EVOLUÇÃO COSTEIRA NO MUNICÍPIO DE BEBERIBE, ESTADO DO CEARÁ, ENTRE OS ANOS DE 1979 A 2019

Analysis of coastal evolution in the municipality of Beberibe, State of Ceará, between the years 1979 to 2019

Abstract

Because of the need for protection, conservation, planning of tourism activities and occupation along the coastal regions, it is necessary to monitor the processes associated with the transformation of this type of highly dynamic and complex landscape. Thus, this paper aimed at the regionalized monitoring of shoreline modifications in the municipality of Beberibe, in the state of Ceará (Northeastern Brazil), between the years 1979 to 2019 through the use of historical images from the LANDSAT series. For quantification of area loss and gain, as a function of coastal dynamics, 4 main sectors were sectioned and the Change Polygon methods were applied, already for the calculation of variation, amplitude and mobility of the beach line statistical rates were generated through the Digital Shoreline Analysis System (DSAS) tool in the predefined sectors. It was identified that the greatest coastal variability is related to Sector 1, and that the smallest decadal variation of the coastline is associated with the cliffs of the Barrier Formation present in Study Sector 4. It was found that this variation between sectors is directly related to the main morphological features found and with the scale of analysis employed.