Open AccessMultitemporal analysis by remote sensing of the evolution of coastal line of Guanabara Bay, Rio de Janeiro, Brazil
Author(s) -
Patrícia Gloriza Fernandes,
José Antônio Baptista Neto,
Khauê Silva Vieira,
M. P. Almeida,
Thúlio Righeti Corrêa,
Jessica Delgado,
Estefan Monteiro da Fonseca
Publication year - 2020
Publication title -
sistemas and gestão
Language(s) - English
Resource type - Journals
ISSN - 1980-5160
DOI - 10.20985/1980-5160.2020.v15n1.1619
Subject(s) - thematic mapper , thematic map , bay , remote sensing , multispectral scanner , cartography , geography , satellite , satellite imagery , archaeology , aerospace engineering , engineering
Changes in coastlines are considered one of the most dynamic processes in coastal environments. Therefore, the mapping of such variations has become important in the survey of coastal impacts. In the past years, remote sensing has been used in mapping the coastline. In this research, the coastline of Guanabara Bay, in Rio de Janeiro, Brazil, was mapped in the years of 1938, 1974, 1984, 1997, and 2015, by using geo-referencing software and existing cartographic documents. To map the changes, the bay was divided into four sections, in which maps were produced in graphical format, using ArcGIS, in scales 1:175.000 and 1:250.000. The research used satellite images from Landsat 1 Multispectral Scanner System (MSS), Landsat 5 Thematic Mapper (TM), and Landsat 8 Operational Land Imager (OLI), integrated under geographic information system database, for a visual analysis (qualitative), and statistical observation (quantitative) of orbital images. The data indicate more intense transformations between the years 1938 and 1974, with a total landing area of 15.220.000m². This area corresponds to 69.23% of the amount suppressed during the interval 1938-2015.