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.

该奖项由极地方案办公室南极地质和地球物理方案提供，支持为南极海洋近岸环境制定标准化的硅藻生物区划。该项目需要对从南极大陆边缘恢复的近岸沉积序列进行硅藻、生物地层学和古环境分析。这项工作的核心是利用作为罗伯茨角项目(CRP)一部分从麦克默多海峡恢复的序列进行硅藻分类调查，并辅之以其他相关的钻探岩心材料。该建议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和提炼，2.这些硅藻的生物地层确定和应用，3.建立和公布完整的南极近岸硅藻生物地层分带，为未来南极大陆架采样提供一个框架(例如，ANDRILL)，4.评估极地硅藻谱系的演化模式和节奏，以及5.评估南极古环境的演变，特别是持续海冰的起源和分析海冰随时间的波动。项目的广泛影响：这项工作将培养硅藻生物地层学和古环境研究方面的研究生。这项工作将加深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有价值的见解，这些都是气候模式发展的重要元素。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的基础设施。因此，这项工作将极大地改进和简化最初的岩心表征，从而增加ANDRILL和其他拟议的未来钻探工作的直接科学影响。