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

*** 9805909研究与工程领域女性职业机会（POWRE）项目为女性科学家提供了新的研究和教育提升机会。该项目旨在解决千年尺度气候变化的根本问题，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件。她将学习以下新信息/技能：1)与拉蒙特-多尔蒂地球天文台（LDEO）和牛津大学的亨德森博士一起进行热电离质谱（TIMS）铀/钍（U/TH）测年；W. Broecker和G. Bond， LDEO，和dr。伍兹霍尔海洋研究所的D.欧波和L.凯温，怀卡托大学的C.亨迪博士合作的南极湖沼学，缅因大学的K.马什博士合作的区域气候模拟。然后，她将把她的新知识和技能应用到南极干谷湖泊水位千年尺度波动的研究中。研究人员将使用TIMS、U/TH和加速器质谱（AMS）对湖泊碳酸盐进行放射性碳定年，以测试储层效应，以确保湖泊水位波动的年代学准确。然后，她将利用她对千年尺度波动的了解来确定湖泊的变化是否与世界其他地方的变化相似。湖沼学的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的模式。这些新技能将使P.I受益，不仅在这个与南极湖泊有关的特殊项目中，而且在她未来在新西兰和巴塔哥尼亚进行的南极和南半球研究中。＊＊＊

*** 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. ***