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.

该奖项支持了一项研究，该研究是对南极罗斯海地区的上新世到晚期冰川沉积物的混合硅藻组合的研究。 这层冰川沉积物是最后一次冰川最大值期间冰川活性的记录，并保留了有关南极西部冰盖的上蜡和减弱的信息。 这项研究将利用从罗斯海和南极冰盖下方从活塞和钻芯中回收的样品，并将使用现代定量方法来识别和解释硅藻种群。 这项研究中开发的数据将用于测试罗斯海胚胎的地层模型。 这些地层模型将用于评估南极冰盖的动态行为水平，尤其是该冰盖是否在地质上最近发生的问题崩溃的问题。