Patagonia Lake Drilling Project (PATO): Phase I

9709145马克格拉夫该项目涉及为期两年的巴塔哥尼亚湖钻探项目(PATO)第一阶段的试点研究，该项目是一项多学科的国际努力，目的是首次从阿根廷的三个安第斯外封闭的湖盆中恢复长期的古环境和古气候记录。这些盆地位于南美洲南部从亚热带到温带纬度的横断面上。以前对这三个盆地的海岸线特征的研究记录了晚更新世期间湖泊水位的重大变化，并表明积累的沉积物对气候变化高度敏感。第一阶段项目的目标是：1)调查和采样现代湖泊和陆地环境，以便对沉积物记录进行气候校准；2)对沉积物进行地震调查，确定最佳核心位置；以及3)收集和分析短岩心，以确定记录的古气候潜力。一个由来自阿根廷、德国、瑞士和美国的古海陆学和古气候学领域的专家组成的国际小组正在进行合作。此外，这项合作的很大一部分还得到了其他资金来源的支持：德国(Deutsche Forschungsgomeinschaft)、瑞士(Schweizer NationalFond)、Lamont Doherty地球观测站和阿根廷地质调查局。PATO是对西半球极地-赤道-极地古气候样带(IGBP-PAGE-PEP 1)长期合作努力的贡献。***

9709145 Markgraf This project involves a 2-year pilot study, Phase 1, of the Patagonian Lake Drilling Project (PATO), a multi-disciplinary, international effort to recover, for the first time, long paleoenvironmental and paleoclimate records from three extra-Andean closed lake basins in Argentina. These basins lie along a transect from the subtropical to the temperate latitudes of southern South America. Previous studies on shoreline features from the three basins document major changes in lake levels during the late Pleistocene, and suggest high sensitivity to climate change in the accumulated sediments. The objectives of the Phase 1 project are: 1)to survey and sample the modern lake and terrestrial environments for climate calibration of the sediment record; 2) to undertake seismic surveys of the sediments, to identify optimal core sites; and 3) to collect and analyze short cores to determnine the paleoclimatic potential of the records. An international group of experts in the field of paleolimnology and paleoclimatology is collaborating, from Argentina, Germany, Switzerland, and the US. In addition, substantial portions of this collaboration are supported by other funding sources: Germany (Deutsche Forschungsgemeinschaft); Switzerland (Schweizer Nationalfond); the Lamont Doherty Earth Observatory; and the Argentine Geological Survey. PATO is a contribution to the long- term collaborative effort of the Pole-Equator-Pole paleoclimate transect of the Western Hemisphere (IGBP-PAGES-PEP 1). ***