Bündelantrag PASADO-Support 2: Qualitative environmental and climatic reconstruction for the last glacial interglacial cycles in southern Patagonia - the stable isotope record of the ICDP site Laguna Potrok Aike, Argentina (PASADO-Isotope)

捆绑应用 PASADO 支持 2：巴塔哥尼亚南部末次冰期间冰期循环的定性环境和气候重建 - 阿根廷 Laguna Potrok Aike ICDP 站点的稳定同位素记录 (PASADO-Isotope)

• 批准号: 117411206
• 负责人: Dr. Andreas Lücke
• 金额: --
• 依托单位: Institut für Geographie
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/117411206?language=en
• 关键词: ndelantrag; PASADO; Support; Qualitative; environmental

As the overall aim, this project focuses on studying the last glacial-interglacial cycle of the Southern Hemispheric mid-latitudes (52°S). Drilling of the sediment record of Laguna Potrok Aike, a 770 ka old maar lake in the dry steppe of southern Patagonia (Argentina), provides a unique record of environmental and climate variations. Results will be compared with marine Southern Ocean and Antarctic ice core data as well as with modelling results and help to understand how climate interacts globally. Stable isotope investigations of sedimentary organic matter and lacustrine carbonates will focus on core catcher samples and the complete composite profile from the central basin. Organic carbon and nitrogen isotopes will give insights into lacustrine primary production and organic matter sources. Oxygen and carbon isotope composition of lacustrine carbonates, plant macroremains and sedimentary cellulose will allow evaluating changes in the hydrological cycle of southern Patagonia. In collaboration with national and international science teams these investigations will make available qualitative climate and environmental reconstructions at multi-millennial to multi-decadal resolution. The results will give insights into temporal changes of intensity and latitudinal position of the Southern Hemisphere Westerlies interacting with the Antarctic Circumpolar Current in the hemispheric and global distribution of moisture and energy. Altogether, these results provide information on lacustrine productivity, origin of organic matter, allochthonous sediment supply and hydrological variations that are directly and indirectly related to ecological processes and climatic forcing.

本项目的总体目标是研究南半球中纬度（52°S）的末次冰期-间冰期旋回。在阿根廷南部巴塔哥尼亚干草原上的一个770年前的马尔湖——拉古纳波托克湖的沉积物记录钻探，提供了环境和气候变化的独特记录。结果将与海洋南大洋和南极冰芯数据以及模型结果进行比较，并有助于了解全球气候如何相互作用。沉积有机质和湖相碳酸盐的稳定同位素研究将集中在岩心捕集器样品和中部盆地的完整复合剖面上。有机碳和氮同位素将有助于了解湖泊初级生产和有机质来源。湖泊碳酸盐、植物大残骸和沉积纤维素的氧碳同位素组成将有助于评估南巴塔哥尼亚水循环的变化。在与国家和国际科学小组的合作下，这些调查将以几千年至几十年的分辨率提供定性的气候和环境重建。研究结果将揭示与南极绕极流相互作用的南半球西风带的强度和纬向位置在半球和全球水分和能量分布中的时间变化。总之，这些结果提供了与生态过程和气候强迫直接或间接相关的湖泊生产力、有机质来源、异域沉积物供应和水文变化的信息。

项目成果

Ikaite precipitation in a lacustrine environment – implications for palaeoclimatic studies using carbonates from Laguna Potrok Aike (Patagonia, Argentina)

湖泊环境中的 Ikaite 降水 â 对利用 Laguna Potrok Aike（阿根廷巴塔哥尼亚）碳酸盐进行古气候研究的影响

• DOI: 10.1016/j.quascirev.2012.05.024
• 发表时间: 2013
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: Oehlerich;Griesshaber;Lücke;Oeckler;Ohlendorf;Schmahl
• 通讯作者: Schmahl

Intensified Southern Hemisphere Westerlies regulated atmospheric CO2 during the last deglaciation

• DOI: 10.1130/g34335.1
• 发表时间: 2013-08
• 期刊: Geology
• 影响因子: 5.8
• 作者: C. Mayr;A. Lücke;S. Wagner;H. Wissel;C. Ohlendorf;T. Haberzettl;Markus Oehlerich;F. Schäbitz;M. Wille;J. Zhu;B. Zolitschka

Characterizing oxygen isotope variability and host water relation of modern and subfossil aquatic mosses

表征现代和亚化石水生苔藓的氧同位素变异性和宿主水关系

• DOI: 10.1016/j.gca.2014.01.013
• 发表时间: 2014
• 期刊: Geochimica et Cosmochimica Acta
• 影响因子: 5
• 作者: Lücke;Wissel;Ohlendorf;Zolitschka;the PASADO science team
• 通讯作者: the PASADO science team

New insights into paleoenvironmental changes in Laguna Potrok Aike, southern Patagonia, since the Late Pleistocene: The PASADO multiproxy record

对巴塔哥尼亚南部波特罗克艾克湖自晚更新世以来古环境变化的新见解：PASADO 多代理记录

• DOI: 10.1177/0959683611429833
• 发表时间: 2012
• 期刊: The Holocene
• 作者: Recasens;Ariztegui;Gebhardt;Gogorza;Haberzettl;T.Hahn;Lisé-Pronovost;Lücke;Maidana;Ohlendorf;Schäbitz;St-Onge;Zolitschka;the PASADO ScienceTeam
• 通讯作者: the PASADO ScienceTeam

The last Glacial–Interglacial transition in Patagonia, Argentina: the stable isotope record of bulk sedimentary organic matter from Laguna Potrok Aike

阿根廷巴塔哥尼亚最后一次冰期-间冰期转变：来自拉古纳波特罗克艾克的大量沉积有机质的稳定同位素记录

• DOI: 10.1016/j.quascirev.2012.05.025
• 发表时间: 2013
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: Lücke;Wissel;Müller;Ohlendorf;Zolitschka;the PASADO science team
• 通讯作者: the PASADO science team