Development of a Standard Antarctic Nearshore Diatom Biozonation

标准南极近岸硅藻生物区划的发展

• 批准号: 0230722
• 负责人: Reed Scherer
• 金额: $ 8.21万
• 依托单位: Northern Illinois University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0230722&HistoricalAwards=false
• 关键词: Development; Standard; Antarctic; Nearshore; Diatom

This award, provided by the Antarctic Geology and Geophysics Program of the Office of Polar Programs, supports the development of a standardized diatom biozonation for Antarctic marine near-shore environments. The project entails diatom biostratigraphic and paleoenvironmental analyses of recovered near-shore sediment sequences from the margins of the Antarctic continent. At the heart of the work is diatom taxonomic investigation using will be sequences recovered from McMurdo Sound as part of the Cape Roberts Project (CRP), supplemented by other relevant drill core material.Scientific Objectives and Intellectual Merit of the Proposal Include:1. Taxonomic analysis and refinement of Antarctic near-shore Cenozoic marine diatoms,2. Biostratigraphic determination and application of these diatoms,3. Establishment and publication of an integrated Antarctic near-shore diatom biostratigraphic zonation, providing a framework for future Antarctic continental shelf sampling (e.g., ANDRILL),4. Evaluation of the mode and tempo of evolution of polar diatom lineages, and5. Evaluation of the evolution of Antarctic paleoenvironments, especially the origin of persistent sea ice and analysis of sea-ice fluctuations through time.Broader Impact of the Project:This work will train a graduate student in diatom biostratigraphy and paleoenvironmental studies. The work will improve our understanding of Cenozoic climatic development of Antarctica, and contribute valuable insights into glacial fluctuations and sea ice history, which are important elements for climate model development. It will support the infrastructure of scientific knowledge by providing a biostratigraphic zonation directly applicable to future Antarctic drilling. As such, this work will greatly improve and streamline initial core characterization, thus increase the immediate scientific impact of ANDRILL and other proposed future drilling efforts.

该奖项由极地项目办公室的南极地质和地球物理项目提供，支持南极海洋近岸环境标准化硅藻生物区划的开发。该项目需要对从南极大陆边缘回收的近岸沉积物序列进行硅藻生物地层和古环境分析。这项工作的核心是硅藻分类学研究，使用从麦克默多湾回收的序列作为罗伯茨角项目 (CRP) 的一部分，并辅以其他相关钻芯材料。该提案的科学目标和智力价值包括：1。南极近岸新生代海洋硅藻的分类分析与细化，2．硅藻的生物地层测定及其应用，3．建立并出版综合南极近岸硅藻生物地层分区，为未来南极大陆架采样提供框架（例如 ANDRILL）4。极地硅藻谱系演化模式和速度的评估，5．评估南极古环境的演变，特别是持久性海冰的起源，并分析海冰随时间的波动。该项目的更广泛影响：这项工作将培训硅藻生物地层学和古环境研究的研究生。这项工作将增进我们对南极洲新生代气候发展的理解，并为冰川波动和海冰历史提供宝贵的见解，这些都是气候模型开发的重要要素。它将通过提供直接适用于未来南极钻探的生物地层分区来支持科学知识基础设施。因此，这项工作将极大地改进和简化初始岩心表征，从而增加 ANDRILL 和其他拟议的未来钻探工作的直接科学影响。