Abstract: | Coastal zone occupation has been increasing in the last decades, which has caused an expressive rise in the density of coastal zone population. A relative rising in mean sea level has provided a diminution on the coastal zone land area. Barrier islands have been used for habitation and entertainment purposes, and they also represent a natural protection to the coast acting as a shelter for the coastline against wave and tide action. In this sense a spatio-temporal triennial analysis, using satellite images, was done for NE Brazil. The images were obtained from CBERS, satellite dated from 14/08/2004, 13/08/2005 and 09/03/2006. They main goal of this study is to quantify the progradation of Presidio’s barrier island (Guamare-RN, NE Brazil) during the period from 2004 - 2006. Approximately 200m/year was the progradation observed for the referred island, pointing out high morphodynamic process for this region. Attached to the progradation, a shoreline retreat was observed at the area adjacent to the West extremity of the island. The total retreat measured was around 130m. |
|
---|---|---|
PDF: | Seiten aus CR16_45-48.pdf (819.426 Bytes) | |
Coastal databases provided and maintained by EUCC - The Coastal Union Germany |