Collaborative Research: Cosmogenic Radionuclides in the Deep WAIS Divide Core

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该奖项支持一个测量宇宙放射性核素铍-10在深WAIS分裂冰芯中的浓度的项目。由于宇宙形成的放射性核素是用于冰芯绝对定年和推导古积累速率的关键参数之一，因此必须迅速有效地进行这些测量，并在获得结果后立即传播这些信息。该项目的知识价值在于，它将允许将来自WAIS分水岭的冰芯与先前测量的来自北极冰芯的宇宙生成放射性核素记录进行比较，特别是GISP2和GRIP。该项目将使科学家能够从产生全球影响的过程中描绘出那些在局部层面起作用的过程，并将提供独立的年代标记，以帮助重建WAIS分水岭冰芯年表。宇宙成因的10Be剖面也可用于研究太阳活动对气候的可能作用。将放射性核素浓度与来自不同地点的冰芯的古气候记录进行直接比较，将使我们更深入地了解太阳强迫气候的时间和强度。该项目的更广泛影响包括：(i)组建一个多学科的合作者小组，以解释未来对来自WAIS分裂和其他冰芯的宇宙形成放射性核素数据的分析。（ii）通过对冰样的详细研究，使研究生和本科生参与和培训大规模的气候研究项目。（iii）有机会向广大的实验室访客和当地K-12学校的学生强调冰芯和气候变化研究的重要性。该奖项不包括在南极洲的实地工作。

Caffee/0839042 This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This award supports a project to measure the concentration of the cosmogenic radionuclide, Beryllium-10 in the deep WAIS divide ice core. Since cosmogenic radionuclides are one of the key parameters used for absolute dating of the ice core and deriving paleoaccumulation rates, it is essential that these measurements be made quickly and efficiently, and that the information is disseminated as soon as the results are available. The intellectual merit of the project is that it will allow a comparison to be made between the core from WAIS Divide and previously measured cosmogenic radionuclide records from Arctic ice cores, particularly GISP2 and GRIP This project will enable scientists to delineate those processes acting at a local level from those that produce global effects and will provide independent chronological markers to aid in the reconstruction of the WAIS Divide ice core chronology. The cosmogenic 10Be profile can also be used to investigate the possible role of solar activity on climate. The direct comparison of radionuclide concentrations with paleoclimate records in ice cores from different sites will provide more insight in the timing and magnitude of solar forcing of climate. The broader impacts of this project include: (i) the formation of a multi-disciplinary team of collaborators for the interpretation of future analyses of cosmogenic radionuclide data from the WAIS divide and other ice cores. (ii) the involvement and training of graduate and undergraduate students in the large scale project of climate research through detailed studies of ice samples. (iii) the opportunity to highlight to a wide range of lab visitors and students from local K-12 schools the importance of ice core and climate change studies.This award does not involve field work in Antarctica.