Reconstructing Cenozoic Sea Ice History of the Central Arctic Ocean

重建北冰洋中部新生代海冰历史

• 批准号: 0623220
• 负责人: Kathryn Moran
• 金额: $ 28.96万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-11-15 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0623220&HistoricalAwards=false
• 关键词: Reconstructing; Cenozoic; Sea; Ice; History

Using cores recovered during the 2004 Arctic Coring Expedition (ACEX), the researchers will construct a magnetostratigraphic record and employ sediment properties (e.g., X-ray imagery, grain size distributions, color imagery, and physical properties logs) proxies to identify the distribution and amount of ice-rafted debris (IRD). These results, coupled with other data from the expedition, will then be used to distinguish between iceberg and sea ice derived material and to construct an IRD chronostratigraphy. The project will contribute to Northern Hemisphere climate reconstructions and the correlations between glaciations and tectonic/oceanographic events. Broader impacts include expanding our understanding of the history of the poorly studied Arctic Ocean and climate change events, maximizing the use of the rare ACEX cores, increasing participation of underrepresented groups in science, and contributing to the University of Rhode Island teacher Armada program.

利用2004年北极取芯考察（ACEX）期间回收的岩心，研究人员将构建一个磁地层记录，并利用沉积物特性（如x射线图像、粒度分布、彩色图像和物理特性日志）来确定冰载碎屑（IRD）的分布和数量。这些结果，再加上考察的其他数据，将用于区分冰山和海冰来源的材料，并构建IRD年代地层学。该项目将有助于北半球气候重建以及冰川与构造/海洋事件之间的相关性。更广泛的影响包括扩大我们对研究不足的北冰洋和气候变化事件的历史的理解，最大限度地利用罕见的ACEX核心，增加代表性不足的群体在科学领域的参与，并为罗德岛大学的教师舰队计划做出贡献。