Reconstructing Cenozoic Sea Ice History of the Central Arctic Ocean

研究人员将利用2004年北极取芯考察（ACEX）期间回收的岩心，构建磁性地层记录，并利用沉积物特性（例如，X射线图像、粒度分布、彩色图像和物理特性日志）代理，以确定冰筏碎片（IRD）的分布和数量。 这些结果，再加上其他数据从探险，然后将被用来区分冰山和海冰派生的材料，并建立一个IRD年代地层。 该项目将有助于北方半球气候重建和冰川与构造/海洋事件之间的相互关系。 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，增加科学中代表性不足的群体的参与，并为罗得岛大学教师阿尔马达计划做出贡献。

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.