Estimativa da Capacidade de Transporte Longitudinal de Sedimentos a partir de Dados de Ondas para a Costa do Rio Grande do Sul

Autores

  • SÁVIO FREIRE LIMA Pós-Graduação em Engenharia de Recursos Hídricos/IPH/UFRGS
  • LUIZ EMÍLIO ALMEIDA Instituto de Pesquisas Hidraulicas/IPH/UFRGS
  • ELÍRIO TOLDO JR Centro de Estudos de Geologia Costeira e Oceânica/ CECO/ UFRGS

DOI:

https://doi.org/10.22456/1807-9806.20272

Palavras-chave:

Rio Grande do Sul coast, littoral drift, coastal erosian.

Resumo

Waves data and a simple mathematical model was used to determine the longshore sediments transport at the Rio Grande do Sul coast. The model was developed by the application of the Energy Flow Method (U.S. Army, 1984), to estimate quantitatively the littoral drift potential for different segments of the coast. The coast was divided in segments or straight lines, which has the same orientation. The coefficient of proportionality between the wave energy and the sediment transport was obtained using beach profile surveys and sediment grain size. The largest drift taxes were of the order of -2.900.000 m3/year and -2.600.000 m3/year for NE, along of the Hermenegildo beach and Between Cassino and Solidão Beach, respectively. reasonable agreement exists between coastal erosion observations in previous studies and the result obtained by this model, which suggests that a predictive capability has been established.

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Publicado

2001-12-31

Como Citar

LIMA, S. F., ALMEIDA, L. E., & TOLDO JR, E. (2001). Estimativa da Capacidade de Transporte Longitudinal de Sedimentos a partir de Dados de Ondas para a Costa do Rio Grande do Sul. Pesquisas Em Geociências, 28(2), 99–107. https://doi.org/10.22456/1807-9806.20272