Collaborative Research: Cosmogenic Radionuclides in the Deep WAIS Divide Core

Caffee/0839042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。该奖项支持一个项目，以测量宇宙成因放射性核素，Berklion-10在深WAIS分水岭冰芯的浓度。 由于宇宙成因放射性核素是用于冰芯绝对定年和推导古积累率的关键参数之一，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信息。 该项目的智力价值在于，它将允许在来自WAIS分水岭的冰芯与以前从北极冰芯，特别是GISP 2和GRIP测量的宇宙成因放射性核素记录之间进行比较 该项目将使科学家能够从产生全球影响的过程中区分出在地方一级起作用的过程，并将提供独立的年代标记，以帮助重建西澳大利亚大地震研究所分水岭冰芯年代学。 宇宙成因10 Be剖面也可以用来研究太阳活动对气候的可能作用。将放射性核素浓度与不同地点冰芯中的古气候记录进行直接比较，将有助于更深入地了解太阳气候强迫的时间和大小。 这一项目的更广泛影响包括：（i）组成一个多学科合作者小组，以解释今后对来自世界冰情测量系统分水岭和其他冰芯的宇宙成因放射性核素数据的分析。 (ii)通过对冰样本的详细研究，使研究生和本科生参与并培训大规模气候研究项目。 (iii)有机会向来自当地K-12学校的实验室参观者和学生强调冰芯和气候变化研究的重要性。该奖项不涉及南极洲的实地考察。

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.