Multitemporalidade da linha de costa, percepção de risco e vulnerabilidade na praia do Crispim, Marapanim (PA)

Abstract

The beaches are very ecological and serve as a protection zone against the destructive action of waves. The beaches of the municipality of Marapanim, located in the northeast of Pará, in the physiographic sector of the Atlantic Coast of Salgado Pará, are influenced by semidiurnal macrotides. Therefore, this study aimed to evaluate the morphological variability at Crispim beach through a multitemporal analysis, based on images of the RapidEye and Sentinel 2 constellations in the period from 2013 to 2021. In addition, the perception of risk and social vulnerabilities was studied. of residents and beaches, characteristics of risks, such as areas registered as the main adaptation areas, experiences and impacts of residents. For the analysis of the best coastline in Praia do Crispim, use the beach in 4 sectors with strategic points, to understand the event. In sectors 1, 3 there were expressive species of the coastline, in the points that have a higher degree of mainly edification, while in sector 4, sediment addition. Note a degree of vulnerability of beach residents, due to low social indicators, which compromises the population's ability to respond to erosive processes. However, the population of the area recognizes the event as dangerous and is aware of its temporality, because of the length of residence on the beach. There is also a very long wait in relation to the Orla Project to solve the problems with the integrated connection. In this way, there is an intervention of the public power in order to carry out preventive measures with the population of Praia do Crispim, since the intensity and recurrence of the erosive event is evident, causing damages the residents and the public coffers.