A critical evaluation of coastal erosion in Rio Grande do Sul, Southern Brazil
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| Format: | Artículo científico |
| Langue: | en |
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Academia Brasileira de Ciências
2004
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| _version_ | 1876430949560877056 |
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| author | Luiz J. Tomazelli |
| author_facet | Luiz J. Tomazelli |
| contents | A critical evaluation of coastal erosion in Rio Grande do Sul, Southern Brazil Luiz J. Tomazelli Luciana S. Esteves Sérgio R. Dillenburg Multidisciplinaria (Ciencias Naturales y Exactas) Quaternary sediment budget coastal barriers coastal evolution shoreline changes 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. 2004 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32776314 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.76 |
| format | Artículo científico |
| id | redalyc_32776314 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | A critical evaluation of coastal erosion in Rio Grande do Sul, Southern Brazil Luiz J. Tomazelli Multidisciplinaria (Ciencias Naturales y Exactas) Quaternary sediment budget coastal barriers coastal evolution shoreline changes A critical evaluation of coastal erosion in Rio Grande do Sul, Southern Brazil Luiz J. Tomazelli Luciana S. Esteves Sérgio R. Dillenburg Multidisciplinaria (Ciencias Naturales y Exactas) Quaternary sediment budget coastal barriers coastal evolution shoreline changes 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. 2004 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32776314 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.76 |
| title | A critical evaluation of coastal erosion in Rio Grande do Sul, Southern Brazil |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Quaternary sediment budget coastal barriers coastal evolution shoreline changes |
| url | https://www.redalyc.org/articulo.oa?id=32776314 |