POWRE: High-Resolution Chronology of Millennial-Scale Lake-Level Fluctuations in the Dry Valleys (Antarctica) From Uranium-Thorium and Radiocarbon Dating

*** 9805909 研究和工程领域女性专业机会 (POWRE) 计划为女科学家提供新的研究和教育增强机会。 该项目旨在解决造​​成千禧年规模气候变化的根本问题，其中包含专门为提高首席研究员的教育和研究技能而设计的组成部分。 她将学习以下新信息/技能：1) 与拉蒙特-多尔蒂地球观测站 (LDEO) 和牛津大学的 G. Henderson 博士一起进行热电离质谱 (TIMS) 铀/钍 (U/TH) 测年，2) 与拉蒙特-多尔蒂地球观测站 (LDEO) 和牛津大学的 G. Henderson 博士一起进行千年规模的气候变化。 W. Broecker 和 G. Bond，LDEO 以及博士。 D. Oppo 和 L. Keigwin，伍兹霍尔海洋研究所，3) 与怀卡托大学 C. Hendy 博士合作的南极湖沼学，以及 4) 与缅因大学 K. Maasch 博士合作的区域气候模型。 然后，她将应用她的新知识和技能来研究南极洲干谷湖泊水位的千禧年规模波动。 研究人员将利用TIMS、U/TH和加速器质谱(AMS)放射性碳测年技术对湖相碳酸盐岩进行储层效应测试，以确保湖面波动年代学的准确。 然后，她将利用自己对千年尺度波动的了解来确定湖泊变化是否与世界其他地方看到的类似。 湖泊学知识不仅有助于评估湖泊水库效应，而且有助于开始确定湖泊水位大规模变化的原因。 同样，区域气候模型将使她能够深入了解末次盛冰期干谷地区的能量平衡和风力模式。 这些新技能将使项目负责人受益，不仅有利于这个与南极湖泊有关的特定项目，而且也有利于她未来在新西兰和巴塔哥尼亚进行的南极和南半球研究。 ***

*** 9805909 The Professional Opportunities for Women in Research and Engineering (POWRE) program affords new research and educational enhancement opportunities for women scientists. This project, which addresses the fundamental problem of the cause of millennial-scale climate change, contains components specifically designed to increase the educational and research skills of the principal investigator. She will learn the following new information/skills: 1) thermal ionization mass spectrometry (TIMS) uranium/thorium (U/TH) dating with Dr. G. Henderson at Lamont-Doherty Earth Observatory (LDEO) and Oxford University, 2) millennial-scale climate change with Drs. W. Broecker and G. Bond, LDEO, and with Drs. D. Oppo and L. Keigwin, Woods Hole Oceanographic Institution, 3) Antarctic limnology with Dr. C. Hendy, University of Waikato, and 4) regional climate modeling with Dr. K. Maasch, University of Maine. She will then apply her new knowledge and skills to a study of millennial-scale fluctuations of lake levels in the Dry Valleys of Antarctica. The investigator will use TIMS, U/TH and accelerator mass spectrometric (AMS) radiocarbon dating of lacustrine carbonates to test the reservoir effect in order to ensure that the chronology of lake-level fluctuations in accurate. She will then use her knowledge of millennial-scale fluctuations to determine if the lake variations are similar to those seen elsewhere in the world. Knowledge of limnology will help not only to assess the lake reservoir effect, but also to begin to determine the cause of large-scale changes in lake level. Likewise, regional climate modeling will allow her to gain insight into the energy balance and wind patterns of the Dry Valleys region during the last glacial maximum. These new skills will benefit the P.I., not only in this particular project relating to Antarctic lakes, but also in her future Antarctic and Southern Hemisphere research in New Zealand and Patagonia. ***