Time-spatial analysis supporting coastal erosion process evaluation at Atafona, São João da Barra (RJ)

• Main Authors: Ricardo A. dos Santos, Corbiniano Silva, Cintia F. de Souza, Anderson G. de Almeida, Bruno G. Pinna, Aline P. Pereira, Maurício de S. D. Guimarães, Priscila S. da C. Moreira, Suzana H. F. da Silva, Alberto G. F. Jr., Cleverson G. Silva, Sérgio C. de Vasconcelos, Carlos H. de O. Rocha
• Format: Article
• Language: English
• Published: Universidade Federal de Uberlândia 2004-12-01
• Series: Revista Brasileira de Cartografia
• Subjects: Cartography; Oceanography; Geology; Atafona; Geography.
• Online Access: http://www.rbc.ufrj.br/_pdf_56_2004/56_2_05.pdf

This paper provides a presentation of the preliminary results obtained from cartographic mapping process with the aim of making an assessment of coastal erosion observed in Atafona beach, in São João da Barra district – RJ, as a requirement to make a spatial and temporal monitoring of this phenomenon. The records indicate erosion since 1975 in the south portion of the Paraíba do Sul River delta. So far, 183 buildings have already been destroyed, distributed in 14 blocks. The erosion process with real estates losses has directly affected the resident population. This work is an unfolding of a research project in the area of geological oceanography. Several cartographic data sources such as SPOT satellite image collection and LANDSAT7 ETM+ system were used for the following dates of acquisition: 14/07/1997, 29/08/1999 and 17/07/2001. Aerial photos are being used as well for the following dates: 1954, 1957, 1964, 1966, 1974, 1976 e 2000. The beach escarpment dynamics are being monitored by GPS system and the SPRING4.0 system is used to generate a spatial database and digital thematic maps indicating spatial configuration of erosion.