Linkages Between Riverine Freshwater Dispersal, Sea-Ice Formation and Large-Scale Sediment Transport in the Central and East Siberian Arctic

PI建议使用有关大气、水文和海洋参数的时间序列，并结合遥感方法来检查西伯利亚陆架-陆地系统。将根据影响欧亚北极的年代际变化来评估西伯利亚大陆架上的水文、大气环流和海冰状况之间的联系的影响。这项研究将确定1)河流淡水供应、海冰形成和冰排输出泥沙之间的联系，2)量化有关过程的区域和时间变异性，3)确定重大灾难性事件相对于沿海和整个流域泥沙输送逐步演变制度的相对重要性，4)确定一套界定渐进和灾难性制度的关键过程和参数。这些分析将产生对陆地-海洋相互作用的了解，这将产生预测北极全球变化影响所需的重要信息。

The PI proposes to use a time-series of the relevant atmospheric, hydrologic and oceanic parameters in conjunction with remote sensing methods to examine the Siberian shelf-land system. The impact of linkages between hydrology, atmospheric circulation and the sea-ice regime over the Siberian shelves will be assessed for a decadal variability that affects the Eurasian Arctic. The study will identify 1) links among riverine fresh-water supply, sea-ice formation and sediment export by ice rafting, 2) quantify the regional and temporal variability of the relevant processes, 3) determine the relative importance of major, catastrophic events as compared to the gradual evolutionary regime of coastal and basin-wide sediment transport, 4) identify a set of critical processes and parameters that delimit the gradual and the catastrophic regime. Those analyses will yield an understanding of land-ocean interactions that will yield important information necessary for predicting impacts from global change in the Arctic.