A significant longshore transport divergence zone at the Northeastern Brazilian coast: implications on coastal Quaternary evolution
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| Format: | Artículo científico |
| Langue: | en |
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Academia Brasileira de Ciências
2002
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| _version_ | 1876478863400239104 |
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| author | Iracema R. Silva |
| author_facet | Iracema R. Silva |
| contents | A significant longshore transport divergence zone at the Northeastern Brazilian coast: implications on coastal Quaternary evolution Iracema R. Silva Daiana L. Sousa José M.L. Dominguez Abílio C.S.P. Bittencourt Luois Martin Multidisciplinaria (Ciencias Naturales y Exactas) littoral drift wave refraction numerical modelling coastal Quaternary evolution Northeastern Brazilian coast By using the mean directions of the wave-fronts approaching the Brazilian northeastern coastal stretchcomprised between the localities of Real river (Sergipe State) and Galinhos (Rio Grande do Norte State) coincident with those of the main winds occurring in the area and their periods, we have defined a waveclimate model based on the construction of refraction diagrams. The resulting model of sediment transport,as obtained by numerical modelling from the refraction diagrams, taking into consideration the angle ofapproach and waves heights along the 10-m isobath, was capable of reproducing the patterns of sedimentdispersion provided by geomorphic indicators of the longshore drift. All this coastal region, approximately900 km in length, is characterized by a significant divergence zone in the direction of net longshore driftof sediments, the potential intensity of which increases considerably in value, in almost its entire length,continuously toward downdrift, which might explain the greater or lesser long term susceptibility to erosion,during the Quaternary, along the coastal stretch studied. 2002 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32774312 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.74 |
| format | Artículo científico |
| id | redalyc_32774312 |
| institution | Redalyc |
| language | en |
| publishDate | 2002 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | A significant longshore transport divergence zone at the Northeastern Brazilian coast: implications on coastal Quaternary evolution Iracema R. Silva Multidisciplinaria (Ciencias Naturales y Exactas) littoral drift wave refraction numerical modelling coastal Quaternary evolution Northeastern Brazilian coast A significant longshore transport divergence zone at the Northeastern Brazilian coast: implications on coastal Quaternary evolution Iracema R. Silva Daiana L. Sousa José M.L. Dominguez Abílio C.S.P. Bittencourt Luois Martin Multidisciplinaria (Ciencias Naturales y Exactas) littoral drift wave refraction numerical modelling coastal Quaternary evolution Northeastern Brazilian coast By using the mean directions of the wave-fronts approaching the Brazilian northeastern coastal stretchcomprised between the localities of Real river (Sergipe State) and Galinhos (Rio Grande do Norte State) coincident with those of the main winds occurring in the area and their periods, we have defined a waveclimate model based on the construction of refraction diagrams. The resulting model of sediment transport,as obtained by numerical modelling from the refraction diagrams, taking into consideration the angle ofapproach and waves heights along the 10-m isobath, was capable of reproducing the patterns of sedimentdispersion provided by geomorphic indicators of the longshore drift. All this coastal region, approximately900 km in length, is characterized by a significant divergence zone in the direction of net longshore driftof sediments, the potential intensity of which increases considerably in value, in almost its entire length,continuously toward downdrift, which might explain the greater or lesser long term susceptibility to erosion,during the Quaternary, along the coastal stretch studied. 2002 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32774312 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.74 |
| title | A significant longshore transport divergence zone at the Northeastern Brazilian coast: implications on coastal Quaternary evolution |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) littoral drift wave refraction numerical modelling coastal Quaternary evolution Northeastern Brazilian coast |
| url | https://www.redalyc.org/articulo.oa?id=32774312 |