GEOSCAN Search Results: Fastlink

GEOSCAN Menu


TitleMapping Coastal Erosion in Southern Paraíba, Brazil from RADARSAT-1
DownloadDownloads (Preprint)
AuthorBarbosa, M; Singhroy, V; Saint-Jean, R
SourceCanadian Journal of Remote Sensing vol. 25, issue 3, 1999 p. 323-328, https://doi.org/10.1080/07038992.1999.10874730
Year1999
Alt SeriesEarth Sciences Sector, Contribution Series 20042796
PublisherInforma UK Limited
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
AreaParaiba; Brazil
SubjectsNature and Environment; coastal erosion; ecosystems; fracturing; RADARSAT-1; settlements; sea level rise; shoreline retreat; coastline fractures
Illustrationslocation maps; satellite images; geological sketch maps; tables; photographs
Released2014 07 31
AbstractIn the southern coast of Paraiba in northeast Brazil coastal erosion is a severe problem with serious damage to coastal settlements and sensitive ecosystems. Assessing the effects of sea level rise and global climate change in these coastal areas requires detail knowledge of the geological controls, and an accurate and simple method to measure shoreline changes. Using local 1:100 000 topographic maps from 1971 and a 1996 RADARSAT-1 image, we estimate that the shoreline has retreated between 150-300meters in 25 years. The image was also used to update existing drainage, geomorphological and geological maps. In this area, the resistance of coastal sedimentary units, and the degree of fracturing along the coastline control coastal erosion. Weak and fractured Quaternary sediments characterize areas of severe erosion, and sandstone cliffs, protected by reefs characterize the stable areas.
GEOSCAN ID219598