Affiliation:
1. Universidade Federal do Rio Grande do Sul, Brasil
2. Fundação Universidade Federal do Rio Grande, Brasil
Abstract
Evidences of coastal erosion in Rio Grande do Sul have been obtained by three methods: (a) analysis of the long-term morphodynamics and stratigraphy of coastal barriers, (b) annual shoreline mapping using the Differential Global Positioning System (DGPS), and (c) local beach profile measurements. The first method reflects coastal erosion as continuity of the geological evolution in the last 5 ka, taking place mainly along the southern half of gentle coastal projections. The second method represents a shorter temporal scale and indicates that approximately 80% of the coast is eroding. Beach profiling has been measured in very few places that are distant from each other since the early 1990s; consequently, their results reflect local and very short time shoreline behavior. A critical evaluation of published data addressing coastal erosion in Rio Grande do Sul strongly suggests that short and long term negative balance on the sediment budget is the main cause of erosion along this coastline.
Reference44 articles.
1. The Brazilian sea level curves: a critical review with emphasis on the curves from Paranaguá and Cananéia regions;ANGULO RJ;Mar Geol,1997
2. Relative sea level changes in the last 5500 years in southern Brazil (Laguna-Imbituba region, Santa Catarina State) based on vermetid C ages;ANGULO RJ;Mar Geol,1999
3. An assesment of the atmospheric and wave aspects determining beach morphodynamic characteristics along the central coast of RS State, southern Brazil;BARLETTA RC;J Coast Res SI,2003
4. Coastline Changes;BIRD ECF,1985
5. Stable focus of wave rays as a reason of local erosion at the southern Brazilian coast;CALLIARI LJ;J Coast Res SI,1998
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