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

该奖项是为了支持一个为期一年的项目，研究冰流B下冰下沉积物的微古生物学特征（硅藻、有孔虫和其他微化石），该项目是南极西部冰盖（WAIS）计划的一部分。待研究的沉积物是Barclay Kamb在1991/1992年南极野外季节期间在冰流B钻探项目中获得的。本研究的目的是：1)确定南极西部冰盖冰川的更新世和上新世时期，2)评估南极西部的去冰期和冰期前环境，3)评估沉积物来源和冰川混合，4)测试快速冰流（冰下变形或基底滑动）模式，5)为地球物理解释提供基础地质和年代地层资料。

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.