Mixed Diatom Assemblages in Pliocene to Recent Diamictons of the Central Ross Sea and the Siple Coast, West Antarctica

西南极洲罗斯海中部和西普莱海岸上新世至近代硅藻的混合硅藻组合

• 批准号: 9220413
• 负责人: Reed Scherer
• 金额: $ 9.97万
• 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: 1993
• 资助国家: 美国
• 起止时间: 1993-05-01 至 1995-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9220413&HistoricalAwards=false
• 关键词: Mixed; Diatom; Assemblages; Pliocene; Recent

This award supports a study of mixed diatom assemblages from Pliocene to late Quaternary glacial sediments in the Ross Sea region of Antarctica that are referred to as the Ross Sea Diamicton. This layer of glacial sediment is the record of glacial activity during the last glacial maximum and holds information about the waxing and waning of the West Antarctic Ice Sheet. This study will utilize samples that have been recovered in piston and drill cores from the Ross Sea and from beneath the West Antarctic Ice Sheet and will use modern quantitative methods for identifying and interpreting diatom populations. The data developed in this study will be used to test stratigraphic models for the Ross Sea Embayment. These stratigraphic models will be used to assess the level of dynamic behavior of the West Antarctic Ice Sheet, specifically the question of whether, and how often, this ice sheet has collapsed in the geologically recent past.

该奖项支持了一项混合硅藻组合的研究， 罗斯海上新世至晚第四纪冰川沉积 南极洲的一个区域，被称为罗斯海 迪亚米顿 这一层冰川沉积物是 在最后一次盛冰期的活动， 关于南极洲西部冰盖的消长 这 研究将使用在活塞中回收的样本， 从罗斯海和南极西部的地下钻取岩芯 冰盖，并将使用现代定量方法来确定 以及解读硅藻种群 在此开发的数据 这项研究将用于测试罗斯的地层模型 海侵。 这些地层模型将用于评估 西南极冰盖的动态行为水平， 特别是这个冰原是否以及多久 在地质学上已经崩塌了