Description and chemical composition of manganese deposits during the deep-sea expedition of the streamer Valdivia in 1898-1899

This monograph forms the fourth part of the tenth volume of the scientific results of the voyage of the German exploring ship Valdivia in the Atlantic and Indian Oceans, made during the years 1898-1899. These volumes are published under the editorship of Prof. Chun, the zoologist of Leipzig, who was leader of the expedition ; and Prof. E. Philippi with the cooperation of Sir John Murray. The nature of the materials brought up at various points during the voyage is well illustrated by a series of plates, similar to those accompanying the Challenger volumes. Among the concretions from the Agulhas Bank were found phosphatic nodules containing 33 per cent, of calcium carbonate, 28 of calcium phosphate, 14.6 of calcium sulphate, and 4.8 of magnesium carbonate, with some ferric oxide, alumina, and silica. These nodules were dredged at a depth of 155 metres. Off the coast of Namibia, a large quantity of manganese nodules were also dredged. Their chemical analysis performed at the Mineralogical Institute of the University Jena show similar composition as the nodules recovered by the "Challenger" at station 253 in the Pacific Ocean.

25 Years of Polarstern Hydrography (1982-2007)

Since her commissioning in 1982 RV Polarstern has been operating in the Arctic and Antarctic to carry out scientific research. Between November and March she usually sails to and around the waters of the Antarctic, while the northern summer months are spent in Arctic waters. But also during transits between Bremerhaven and South Africa or South America long-term observations have regularly been performed by using a.o. XBT (Expendable Bathythermograph), CTD (Conductivity, Temperature, Depth), and Thermosalinograph which are standard instruments to carry out hydrographic measurements and are part of the standard instrumentation on board Polarstern. This report presents XBT and CTD profiles as well as sea surface temperature and salinity data recorded with Thermosalinograph during Polarstern cruises. In the framework of physical oceanographic studies the measurements were performed as part of international projects (e.g. like WOCE) or to support multidisciplinary studies.

Efectos psicosociales y sociopolíticos de la Guerra de Malvinas en las provincias de Chaco y Corrientes, 1982 →. 16H241

El proyecto plantea un estudio psicosocial y antropológico del impacto que tuvo la Guerra de Malvinas sobre la política y la identidad de la población de las provincias de Chaco y Corrientes, región desde la que se movilizó un nutrido contingente de soldados hacia el frente de guerra. El periodo a investigar abarca desde el acontecimiento en 1982 hasta nuestros días y pone la mirada sobre los protagonistas del momento: soldados, gobernantes, dirigentes y activistas sociales, y sobre las generaciones posteriores al hecho que lo conocen a partir de la memoria transmitida. El tema es abordado a través de la investigación documental y de entrevistas en profundidad. Constituye una etapa en el desarrollo de la línea de investigación sobre la Guerra de Malvinas en la región del nordeste argentino que se inició en el año 2004, por lo cual contamos con resultados que nos permiten reorientar la investigación hacia distintos aspectos de los efectos del acontecimiento en la sociedad. Este avance nos permite un mayor acercamiento con las organizaciones de ex combatientes que desarrollan su actividad en ambas provincias.

Cornelius Castoriadis. Lo que hace a Grecia. 1. De Homero a Heráclito. Seminarios 1982-1983. La creación humana II. Buenos Aires, Fondo de Cultura Económica, 2006, 422 pp.

Fil: Ciccarelli, Graciela Iris.