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Título

Variaciones hidrográficas diurnas en el área de afloramiento del noroeste de África

Otros títulosHydrografical variations were studied during 24 hours at two stations in the NW Africa upwelling area
Autor Fraga, Fernando
Fecha de publicación sep-1977
EditorJunta Consultiva de Investigación Científica Pesquera
Citación Resultados Expediciones Científicas del Buque Oceanográfico Cornide de Saavedra 6: 169-176 (1977)
ResumenS-II-17 (191ºN; 17ºW) situated 34 miles off Cape Timiris and A-II-12 (21ºN; 18ºW), 49 miles off Cape Blanco. Temperature, salinity, dissolved oxygen, pH, nitrate, nitrite and phosphate were determined every four hours. A vertical oscillation was observed due to semidiurnal tidal internal waves, as well as quantitative variations because of the horizontal transport produced by these waves. The two stations are situated just on the front of lateral contact of different types of water, therefore, with 21 great horizontal heterogeneity. Nutrient variations produced by photosynthesis are masked by those variations produced by these interna1 waves. Variations due to vertical displacements can be corrected when reported to the same isopicnic but those variations produced by horizontal movements can only be left out comparing nutrient values, two by two, at intervals of 12,42 hours even though remaining those variations produced by non-periodical displacements due to permanent currents.
Descripción Suplemento de Investigación Pesquera.-- 8 páginas, 4 figuras
URI http://hdl.handle.net/10261/90253
ISSN0210-2544
Aparece en las colecciones: (IIP) Resultados de Expediciones Científicas
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