Detección de cambios en la línea de costa en los sectores Punta Jambelí y San Gregorio correspondientes al Archipiélago de Jambelí usando sensores remotos

Abstract

Abstract: The variation in the coastline is a study of great importance, because, it constitutes one of the most important parameters in the analysis of the behavior of the coast through time. Coastal areas are of great economic importance due to their natural and socio-cultural resources.Among the various threats that the coasts face, at a global level, the retreatof the coastline due to marine erosion stands out. With the analysis of remote sensing through satellite images and space-time relationship, it was determined the variation of the coast line, besides its possible impact with the mangrove vegetation in thesectors of Punta Jambelí and San Gregorio corresponding to the Jambelí Archipelago in a period of 29 years, The changes due to external factors that affect the Archipelago such as the El Niño phenomenon and the earthquake, were related through time showing an increase of 26.7% in the beach area with respect to San Gregorio, and a decrease of 41.3% in the area of Punta Jambelí. In addition to a great variation with regard to mangrove vegetation. In both areas it decreased, in San Gregorio by 15.59%, and in Punta Jambelí by 20.9%, presenting interesting changes throughout the periods analyzed.