| Summary: | 6 pages, 6 figures.-- La química en el entorno marino: nuevos aspectos metodológicos y aplicaciones.-- VIII Seminario de Ibérico de Química Marina, celebrado en Vigo del 10 al 12 de abril de 1996 [EN] Tre frontal zones tht surround the Antartic Ocean are very close each other in the Indic section of the Antartic Ocean. They form an unique frontal structure. The hydrography of this area has been studied mainly in base of salinity, temperature and oxygen data obtained in spring and summer. Nutrients salts and total organic carbon data were obtained in the Antartic cruise SUZIL-91 during the Austral autumn, 11 April/23 May 1991. The cruise took place on board thr French "Marion Dufresne" R/V in the area located between Crozet, Kerguelen and New Amsterdam Islands. The surface concentrations of nutrient salts increase towards the south. The highest values of nutrient salts were determined in the stations close to Crozet and Kerguelen Islands. The nutrients/salinity diagrams show two well defined groups of values corresponding to those stations sited at the North and at the South of the frontal zone. However, it was not found a lineal relation between the nutrient concentrations and the salinity caused by the lack of winter mixture during the sampling period. The total organic carbon distribution, which concentration ranges between 50 and 150 µM, does not the same tendency observed for the other parameters (S, T, nutrient salts) but shows rich carbon areas mised with poorer ones. This fact is probably due to the different biological activity occurred in the frontal zone [ES] Las zonas frontales que circundelimitan al océano antártico se hallan muy próximas en el sector Índico del océano Antártico formando una estructura frontal única. La hidrografía de esta zona se había estudiado fundamentalmente en base a valores de salinidad, temperatura y oxígeno con datos obtenidos en primavera y verano. los datos de sales nutrientes y carbono orgánico total se obtuvieron durante la campaña antártica SUZIL-91 que transcurrió ...
|
|---|