Workshop Reports Investigating Maar Formation and the Climate History of Southern Argentina–the Potrok Aike Maar Lake Sediment

• Main Authors: Bernd Zolitschka, Hugo Corbella, Nora Maidana, Christian Ohlendorf
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Antarctic; Southern Ocean; The Antarctic; Patagonia; Argentina; Antarc*
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.556.715; http://www.iodp.org/iodp_journals/sd3_06_ch13_investigating_maar_formation.pdf

doi:10.2204/iodp.sd.3.13.2006 Evidence is increasing that the Southern Ocean plays a key role in the global climate system. The southern hemisphere contains more than 90 % of the world’s ice, and eighty-one percent of its total surface area is covered by oceans. On global terms, the most extreme oceanic character is encountered between 40°S and 60°S latitude, where land (Patagonia and a few islands) comprises only 2 % of the surface area. Terrestrial archives of past climate changes are thus extremely scarce at these latitudes. As Patagonia is subject to shifts in polar and mid-latitude winds, pressure fi elds, and precipitation regimes, as well as to variations related to the El Niño Southern Oscillation (ENSO) and the Antarctic Oscillation (AO), it has the unique potential to record variations in the hydrological cycle, changes in