Origin, Development, and Transport of Arctic Sea Ice

该项目是通过海冰在北极盆地上空重新分配沉积物和污染物，这是北冰洋海冰和洋底沉积历史中迄今被忽视的一个方面。它将侧重于沉积物和污染物并入机制的重建，以及单个浮游体的起源、发展和运移历史。这项研究将集中在Beaufort Gyre，那里的冰相对较老，而且各个浮冰的历史可能有很大的不同。将结合多种变量，包括海冰和沉积物的物理性质、污染物化学和同位素氧分析，分析亚细亚盆地海冰的起源、发展和运移历史。这项工作可能会开发出根据综合指标区分北冰洋加拿大或西伯利亚部分形成的冰的技术，并提供有关以下问题的信息：冰的分布范围有多广，有明显的河流信号(氧-18的相对消耗)，以及它是否倾向于有更大的污染物负荷。

This project is the investigation of the redistribution of sediment and pollutants over the Arctic basin through transport by sea ice, a heretofore neglected aspect of the depositional history of the arctic sea ice and ocean bottom. It will focus on the reconstruction of sediment and pollutant incorporation mechanisms, as well as the origin, development, and transport history of individual floes. The study will concentrate on the Beaufort Gyre, where the ice is relatively old, and where individual floes may have significantly different histories. Multiple variables that include the physical properties of the sea ice and the sediments, the contaminant chemistry, and the isotopic oxygen analysis, will be combined in an analysis for the origin, development, and transport history of sea ice in the Amerasian Basin. The work can potentially develop techniques for distinguishing on the basis of the combined indicators between ice formed in the Canadian or Siberian sectors of the Arctic Ocean, and provide information on such questions as how widely distributed is ice with an apparent river signal (relative depletion of oxygen-18), and does it tend to have greater contaminant loads.