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

从冰下沉积物的微古生物学分析看西南极冰盖的历史动态

• 批准号: 9118491
• 负责人: Peter-Noel Webb
• 金额: $ 2.5万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-15 至 1993-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9118491&HistoricalAwards=false
• 关键词: History; Dynamics; West; Antarctic; Ice

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.

该奖项用于支持为期一年的项目，研究冰流 B 下方冰下沉积物的微古生物学特征（硅藻、有孔虫和其他微化石），作为西南极冰盖 (WAIS) 计划的一部分。 待研究的沉积物是 Barclay Kamb 在 1991/1992 南极野外季节期间在冰流 B 钻探计划中获得的。 本研究的目的是：1）确定南极洲西部冰盖冰川作用的更新世和上新世事件，2）评估南极洲西部的冰消期和冰期前环境，3）评估沉积物来源和冰川混合，4）快速冰流测试模型（冰下直到变形或基底滑动），5）提供基线地质和年代地层 数据作为地球物理解释的辅助手段。