History Dynamics of the West Antarctic Ice Sheet from Micropaleontological Analysis of Sub-ice Sediment

这个奖项是为了支持一个为期一年的项目，研究 微体古生物学特征（硅藻、有孔虫和其他 来自冰流B下面的冰下沉积物的微体化石， 西南极冰盖（WAIS）计划的一部分。 的 要研究的沉积物是由巴克莱卡姆获得的， 他在1991/1992年期间对冰流B的钻探计划 南极季节 本研究的目的是：1） 西南极冰更新世和上新世事件识别 冰席作用; 2）冰消期和冰前期评价 南极西部的环境，3）评估沉积物来源 和冰川混合，4）快速冰流（亚- 冰直到变形或基底滑动），以及5）提供基线 地质和年代地层数据作为地球物理的辅助 解释。

This award is for support of a one year project to study the micropaleontologic character (diatoms, foraminifera, and other microfossils) of sub-glacial sediments from beneath ice stream B, as part of the West Antarctic Ice Sheet (WAIS) program. The sediments to be studied were obtained by Barclay Kamb as part of his drilling program on Ice Stream B during the 1991/1992 Antarctic field season. The objectives of this study are to: 1) identify Pleistocene and Pliocene episodes of West Antarctic ice sheet glaciation, 2) evaluate deglacial and preglacial environments in West Antarctica, 3) evaluate sediment provenance and glacial mixing, 4) test models of rapid ice stream flow (sub- ice till deformation or basal sliding), and 5) provide base-line geologic and chronostratigraphic data as an aid to geophysical interpretations.