Collaborative Research: Deglaciation of the Ross Sea Embayment - constraints from Roosevelt Island

合作研究：罗斯海海湾的冰川消融——来自罗斯福岛的限制

• 批准号: 0944307
• 负责人: Howard Conway
• 金额: $ 46.73万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-15 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0944307&HistoricalAwards=false
• 关键词: Collaborative; Research; Deglaciation; Ross; Sea

0944307/ConwayThis award supports a project to use the Roosevelt Island ice core as a glaciological dipstick for the eastern Ross Sea. Recent attention has focused on the eastern Ross Embayment, where there are no geological constraints on ice thickness changes, due to the lack of protruding rock "dipsticks" where the ice sheet can leave datable records of high stands. Recent work has shown how dated ice cores can be used as dipsticks to derive ice-thickness histories. Partners from New Zealand and Denmark will extract an ice core from Roosevelt Island during the 2010-2011 and 2011-12 austral summers. Their science objective is to contribute to understanding of climate variability over the past 40kyr. The science goal of this project is not the climate record, but rather the history of deglaciation in the Ross Sea. The new history from the eastern Ross Sea will be combined with the glacial histories from the central Ross Sea (Siple Dome and Byrd) and existing and emerging histories from geologic and marine records along the western Ross Sea margin and will allow investigators to establish an updated, self-consistent model of the configuration and thickness of ice in the Ross Embayment during the LGM, and the timing of deglaciation. Results from this work will provide ground truth for new-generation ice-sheet models that incorporate ice streams and fast-flow dynamics. Realistic ice-sheet models are needed not only for predicting the response to future possible environments, but also for investigating past behaviors of ice sheets. This research contributes to the primary goals of the West Antarctic Ice Sheet Initiative as well as the IPY focus on ice-sheet history and dynamics. It also contributes to understanding spatial and temporal patterns of climate change and climate dynamics over the past 40kyr, one of the primary goals of the International Partnerships in Ice Core Sciences (IPICS). The project will help to develop the next generation of scientists and will contribute to the education and training of two Ph.D. students. All participants will benefit from the international collaboration, which will expose them to different field and laboratory techniques and benefit future collaborative work. All participants are involved in scientific outreach and undergraduate education, and are committed to fostering diversity. Outreach will be accomplished through regularly scheduled community and K-12 outreach events, talks and popular writing by the PIs, as well as through University press offices.

0944307/Conway 该奖项支持一个利用罗斯福岛冰芯作为东罗斯海冰川量尺的项目。 最近的注意力集中在罗斯海湾东部，那里对冰厚度变化没有地质限制，因为缺乏突出的岩石“量油尺”，冰盖可以在其中留下高位的可记录数据。最近的研究表明，如何使用过时的冰芯作为量油尺来获取冰厚度历史。来自新西兰和丹麦的合作伙伴将在 2010-2011 年和 2011-12 年夏季从罗斯福岛提取冰芯。他们的科学目标是帮助了解过去 40 公里的气候变化。该项目的科学目标不是气候记录，而是罗斯海的冰消历史。罗斯海东部的新历史将与罗斯海中部（Siple Dome 和 Byrd）的冰川历史以及罗斯海西部边缘沿线的地质和海洋记录中现有和新兴的历史相结合，并使研究人员能够建立一个关于末次盛冰期期间罗斯海湾冰的结构和厚度以及消融时间的更新的、自洽的模型。这项工作的结果将为结合冰流和快速流动动力学的新一代冰盖模型提供基础事实。真实的冰盖模型不仅可以用于预测对未来可能环境的响应，还可以用于研究冰盖过去的行为。这项研究有助于实现西南极冰盖计划的主要目标以及 IPY 对冰盖历史和动态的关注。它还有助于了解过去 40 年来气候变化和气候动态的时空模式，这是冰芯科学国际合作伙伴关系 (IPICS) 的主要目标之一。 该项目将有助于培养下一代科学家，并将为两名博士生的教育和培训做出贡献。学生。所有参与者都将从国际合作中受益，这将使他们接触到不同的领域和实验室技术，并有利于未来的合作工作。 所有参与者都参与科学推广和本科教育，并致力于促进多样性。外展活动将通过定期安排的社区和 K-12 外展活动、PI 的演讲和通俗写作以及大学新闻办公室来完成。