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Past and current sediment dispersion pattern estimates through numerical modeling of wave climate: an example of the Holocene delta of the Doce River, Espírito Santo, Brazil

Bittencourt, Abílio C S P ; Dominguez, José M L ; Martin, Louis ; Silva, Iracema R ; de-Medeiros, Karla O P

Anais da Academia Brasileira de Ciências, 2007-06, Vol.79 (2), p.333-341 [Revista revisada por pares]

Brazil: Academia Brasileira de Ciências

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  • Título:
    Past and current sediment dispersion pattern estimates through numerical modeling of wave climate: an example of the Holocene delta of the Doce River, Espírito Santo, Brazil
  • Autor: Bittencourt, Abílio C S P ; Dominguez, José M L ; Martin, Louis ; Silva, Iracema R ; de-Medeiros, Karla O P
  • Materias: Brackish ; Brasil ; Brazil ; Holocene ; Holoceno ; modelagem numérica ; Multidisciplinarias (Ciencias Sociales y Humanidades) ; MULTIDISCIPLINARY SCIENCES ; numerical modeling ; padrões pretéritos e atuais de dispersão de sedimentos ; Past and current sediment dispersion ; refração de onda ; wave refraction
  • Es parte de: Anais da Academia Brasileira de Ciências, 2007-06, Vol.79 (2), p.333-341
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descripción: This paper presents a numerical modeling estimation of the sediment dispersion patterns caused by waves inciding through four distinct coastline contours of the delta plain of the Doce River during the Late Holocene. For this, a wave climate model based on the construction of wave refraction diagrams, as a function of current boundary conditions, was defined and was assumed to be valid for the four coastlines. The numerical modeling was carried out on basis of the refraction diagrams, taking into account the angle of approximation and the wave height along the coastline. The results are shown to be comparable with existing data regarding the directions of net longshore drift of sediments estimated from the integration of sediment cores, interpretation of aerial photographs and C14 datings. This fact apparently suggests that, on average, current boundary conditions appear to have remained with the same general characteristics since 5600 cal yr BP to the present. The used approach may prove useful to evaluate the sediment dispersion patterns during the Late Holocene in the Brazilian east-northeast coastal region.
  • Editor: Brazil: Academia Brasileira de Ciências
  • Idioma: Inglés;Español;Portugués

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