Physical oceanography in the Western Bransfield Strait and Gerlache Strait during Austral summer 1995/96

n the framework of the FRUELA project, two oceanographic surveys were conducted by R/V Hespérides in the eastern Bellingshausen Sea, western basin of the Bransfield Strait and Gerlache Strait area during December 1995 and January 1996. The main hydrographic structures of the study domain were the Southern Boundary of the ACC and the Bransfield Front. The characteristics and zonation of local water masses are discussed in terms of temperature, salinity, dissolved oxygen, nutrient and inorganic carbon concentrations. Concentration intervals for water mass labelling, on the basis of chemical parameters in addition to the common theta/S-based classification, are defined. Silicate seems to be a very good discriminator for local water masses.

Frédéric Monneyron - Joël Thomas. Mitos y literatura. Buenos Aires, Nueva Visión, 2004, 96 pp. (Colección Claves dirigida por Hugo Vezzetti. Traducción de Emilio Bernini).

Fil: Frannino de Zonana, María Gabriela.

"Hombre y realidad. Homenaje a Xavier Zubiri". Rovaletti, María Lucrecia (compiladora) EUDEBA. Buenos Aires, 1985, 96 págs.

Fil: González Gasqués, Gustavo.

María Liliana Lukac de Stier (compiladora). Perspectivas latinoamericanas sobre Hobbes, Buenos Aires, Educa, 2008, 272 pp., ISBN 978-987-620-044-8.

Fil: Castaño, Sergio Raúl. Consejo Nacional de Investigaciones Científicas y Técnicas

AA.VV.: Homenaje a Carlos Orlando Nállim. Mendoza, Universidad Nacional de Cuyo, Facultad de Filosofía y Letras, Departamento de Letras y Consulado General de España, 2001 620 p. 15x22 cm.

Fil: Romano, María Graciela.

Physical properties of firn cores from the 1995/96 and 1996/97 field seasons

The paper focuses on studies of snow-pit samples and shallow firn cores taken during the 1995-96 and 1996-97 field seasons at Amundsenisen, Dronning Maud Land, Antarctica. The dating of the firn is based on the artificial tritium distribution in the snow cover and on several reference horizons identified by electrical measurements. The early 1964 through 1965 horizon is marked by the deposition of sulfate released to the atmosphere during the eruption of the Agung volcano in March 1963; this horizon was detected by dielectric profiling and electrical conductivity measurements; the proof by chemical analysis has still to be seen. At the ten investigated sites on Amundsenisen the 1964-65 horizon was identified 4.1-5.7 m below the surface. The accumulation rates on Amundsenisen are 41-91 kg/m**2/a. The cores are up to 100 years old. A relationship between isotope content and the mean air temperature on a regional scale can be based on measurements of firn temperature at 10 m depth at the drilling sites. Between Neumayer station at the coast and Heimefrontfjella, the temperature gradient of the deuterium content is 9.6 per mil/K. South of Heimefrontfjella, on the Amundsenisen plateau, it is only 5.5 per mil/K. Time series of yearly accumulation rates show no significant trend. For the isotope records a significant trend to higher values with gradients of 0.1-0.2 d2H per mil/a can be seen in five of the ten time series.