Quaternary Environments and Climate Change in the Eastern Canadian Arctic, Constructed from Sediment Cores

该奖项旨在支持PALE活动的一个要素 （来自北极湖泊和河口的古气候）。 研究是 专注于加拿大东部北极地区的湖泊取样项目 目标是恢复环境的连续记录， 在过去的1万到1万5千年里发生了变化。 巴芬岛位于 气候数据分析表明， 这个地区是环北极气候的风向标 系统 该项目将重建过去的气候，从下- 花粉和硅藻组合的核心变化，稳定 沉积物的同位素组成和物理性质 丹 这些湖泊将位于战略要地，沿着一条南北 温度样带，以及横跨E/W海洋/大陆 气候梯度 这些湖的岩芯可以用来检验 与气候变化有关的问题， 冰川历史（最后一次大陆冰的时间和范围） 前进和冰川消退的模式），海平面变化（两者 冰后期的出现和最近的淹没），以及 晚期冰斗和山地冰川的重新发展 全新世（新冰期）。 取样将采用 与PALE目标相称的密度，即十年至 世纪分辨率取决于 不同的湖盆。

This award is in support of one element of the PALE activity (Paleoclimates from Arctic Lakes and Estuaries). Research is focused on a lake coring program in the Eastern Canadian Arctic with the goal of recovering continuous records of environmental change for the last 10 to 15 thousand years. Baffin Island lies in a key location and analyses of climatic data indicate that this region serves as a bellwether for the circum-arctic climate system. This project will reconstruct past climates from down- core changes in the pollen and diatom assemblages, stable isotopic ratios and physical characteristic of the sediment in cores. The lakes will be strategically located along a N/S temperature transect, and across the E/W marine/continental climate gradient. Cores form these lakes will allow examination of questions related to climate change, including regional glacial history (timing and extent of the last continental ice advance and the pattern of deglaciation), sea level change (both postglacial emergence and the more recent submergence), and renewed development of cirque and mountain glaciers in the late Holocene (Neoglaciation). Sampling will be undertaken with a density commensurate with PALE objectives, i.e. decadal to centuries resolution depending on the accumulation rates within the different lake basins.