Collaborative Research: Drilling Site Survey-Life in Subseafloor Sediments of the South Pacific Gyre

合作研究：钻探现场调查——南太平洋环流海底沉积物中的生命

基本信息

批准号：
0527167
负责人：
Steven D'Hondt
金额：
$ 39.68万
依托单位：
University of Rhode Island
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2005
资助国家：
美国
起止时间：
2005-11-01 至 2009-10-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0527167&HistoricalAwards=false
关键词：
Collaborative Research Drilling Site Survey

项目摘要

This 2-year project focuses on characterizing the seafloor and subseafloor in the South Pacific Gyre as part of site survey activities for an IODP proposal to drill for deep biosphere objectives. The project will collect sediment cores and conduct bathymetric and geophysical surveys in the South Pacific Gyre, an oceanographic phenomenon that includes a range of geologic settings (e.g., East Pacific Rise; South Pacific abyssal plane) and that is associated with low rates of organic carbon burial and slow sediment accumulation. Core samples will be used to study prokaryotic communities having very low total activity and to determine the extent to which water radiolysis plays a role in supplying electron donors for microbial processes in these carbon-poor sediments. The researchers will closely collaborate with German scientists on many of the project's deep biosphere objectives. The project directly serves IODP priorities in the area of the deep biosphere and subseafloor ocean and has the potential to expand the research community's capacity to analyze and interpret deep biosphere samples. The project will contribute to the development of human resources in science through the training of both undergraduate and graduate students. Results will also be documented on an established University of Rhode Island website on "Subsurface Life."

这项为期两年的项目着重于对南太平洋Gyre的海底和子层面的表征，作为现场调查活动的一部分，以钻取深层生物圈目标的IODP提案。该项目将收集沉积物核心并进行南太平洋Gyre的测深和地球物理调查，这是一种海洋学现象，其中包括一系列地质环境（例如，东太平洋上升；南太平洋深渊平面），并且与有机碳的低率有关埋葬和缓慢的沉积物积累。核心样品将用于研究具有非常低的总活性的原核生物群落，并确定水差异在这些碳贫困沉积物中为微生物过程提供电子供体的作用程度。研究人员将与德国科学家紧密合作，以实现该项目的许多深层生物圈目标。该项目直接在深层生物圈和下层海洋领域的IODP优先级中，并有可能扩大研究界分析和解释深层生物圈样品的能力。该项目将通过培训本科和研究生的培训来为科学的人力资源发展做出贡献。结果还将在罗德岛大学的既定网站上记录在“地下生活”上。