By Jorge Rabassa, Maria Laura Borla
This symposium, held in Argentina in March 2003, commemorates Otto Nordenskjöld’s 1901 excursion, and will pay tribute to the Swedish and Argentinian explorers who took at the problem of early fieldwork in Patagonia and Antarctica. This subject matter is prolonged to incorporate fresh fieldwork within the usual sciences within the Archipelago of Tierra del Fuego, the Antarctic Peninsula and the sub-Antarctic seas, and celebrates the fruitfulness of constant Swedish-Argentinian medical cooperation.
The symposium and linked actions came about within the towns of Buenos Aires, l. a. Plata and Ushuaia (Tierra del Fuego), and this e-book incorporates a number of the main major contributions offered on the assembly.
Read Online or Download Antarctic Peninsula & Tierra del Fuego: 100 years of Swedish-Argentine scientific cooperation at the end of the world: Proceedings of ''Otto ... in Engineering, Water and Earth Sciences) PDF
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Additional info for Antarctic Peninsula & Tierra del Fuego: 100 years of Swedish-Argentine scientific cooperation at the end of the world: Proceedings of ''Otto ... in Engineering, Water and Earth Sciences)
17 Caldenius initiated also another important study of erosion. It concerned the shores of the large Lake Vättern in Sweden and was performed by John O. 18 The results have been applied on erosion problems along coasts in many parts of the world. In those days it was also possible to do some basic research at the Geological Survey. Caldenius did so, among others, studying clay-varve chronology in the area where the Baltic Ice Lake, an early glaciolacustrine stage of the Baltic Sea, was suddenly drained to the ocean.
In that moment, Auer imagined that if that bed was found in an extended area it would become a time control bed for the study of bogs. With this idea in mind, he worked in the sources of the Río Grande / Grande River, Tierra del Fuego, and was fortunate enough to find, in the very same core, three volcanic ash beds separated by interbedded peat layers. He immediately realized that there were three different volcanic eruptions which were responsible for the successive accumulation of the tephra beds.
At that time the ice-age concept was not more than 50 years old, and it had been only 20 years since the Swede Otto Torell had finally convinced the European scientific community that a large ice-sheet from the north had inundated also the northern parts of central Europe, like Germany and Poland. A specific purpose with this expedition to the south was also to compare the glacial history there with that in the Northern Hemisphere. According to the so called Croll-hypothesis (a forerunner to the now prevailing Milankovich theory) large scale climatic shifts like ice-ages should have been out of phase between the two hemispheres, due to the geometric relationships between Earth and Sun.