Detalhes bibliográficos
| Resumo: | Non-linear wave-wave interactions between sea-swell waves (0.5 < f < 0.04 Hz) and infragravity waves (0.04 < f < 0.004 Hz) are studied in detail from field data using bispectral analysis. This methodology allowed to understand the direction and magnitude of the non-linear energy transfers within the spectrum. Field measurements of pressure data were collected at S. Jacinto beach during a full tidal cycle on a cross-shore transect at the subtidal and intertidal zone. Bispectral estimates showed triad interactions between two sea-swell waves and one infra-gravity wave at the surf zone. The non-linear transfers were out of phase which indicates the presence of bound waves. These results evidenced the presence of energy transfers from infra-gravity to sea-swell band where the sea-swell waves are more energetic, during shoaling and breaking. |
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| Autores principais: | Mendes, D. |
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| Outros Autores: | Pires Silva, A.; Fortunato, A. B.; Pinto, J. P. |
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| Assunto: | Infra-gravity waves Non-linear wave-wave interactions Bispectral analysis Wave observations |
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| Ano: | 2016 |
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| País: | Portugal |
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| Tipo de documento: | documento de conferência |
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| Tipo de acesso: | acesso aberto |
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| Instituição associada: | Laboratório Nacional de Engenharia Civil |
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| Idioma: | inglês |
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| Origem: | Repositório Científico do LNEC |
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