ANÁLISE ESPAÇO-TEMPORAL E MODELAGEM PREDITIVA DA LINHA DE COSTA DO ESTADO DO CEARÁ
Spatial - temporal analysis and predictive modeling of the coastal zone of the state of Ceará
DOI:
https://doi.org/10.5016/geociencias.v42i3.17799Abstract
The coastal zone of the state of Ceará, Brazil, is a region characterized by its high population density and economic relevance. In recent decades, this region has presented several indicators of disequilibrium, with emphasis on increasingly intense erosive processes. This study performs a spatial-temporal analysis of the coastal zone of the state of Ceará for the last 35 years (1984–2020), analyzing remote sensing data (LANDSAT) through the statistical variables present in the Digital Shoreline Analysis System. The net shoreline movement values show that 28% of the state coastline presents depositional tendencies, while 56% presents erosive tendencies. The linear regression rate and end point rate values indicate that 13% of the coastline is subject to depositional tendencies and 38% to erosive tendencies. The predicted values, using the Kalman Filter model, point to a percentage of 34% of the coast subject to depositional tendencies and 49% subject to erosive tendencies, until 2040. The results of this research point to the need for further studies of modeling and, especially, prediction of the coastline of the state of Ceará, to adequately support the coastal and marine planning of the state.