Linear criteria for gravity-wave breaking in resonant stratified flow over a ridge

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Teixeira, MAC (Autor) Outra; Miranda, PMA (Autor) Outra

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY

Vol. 131

Páginas: 1815-1820

ISSN: 0035-9009

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 9 Citações

Outras Informações

ID Authenticus: P-000-2R6

DOI: 10.1256/qj.04.155

Abstract (EN): Using linear theory, it is shown that, in resonant flow over a 2D mountain ridge, such as exists when a layer of uniform wind is topped by an environmental critical level, the conditions for internal gravity-wave breaking are different from those determined in previous studies for non-resonant flows. For Richardson numbers in the shear layer not exceeding 2.25, two zones of flow overturning exist, respectively below and downstream and above and upstream of the expected locations. Flow overturning occurs for values of the dimensionless height of the ridge smaller than those required for a uniform wind profile. These results may have implications for the physical understanding of high-drag states.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6