Benthic Cycling and Accumulation of Organic Matter, Biogenic Opal, and CaCO3 in the JGOFS Southern Ocean Study Areas

JGOFS 南大洋研究区有机质、生物蛋白石和 CaCO3 的底栖循环和积累

• 批准号: 9530719
• 负责人: Frederick Sayles
• 金额: $ 39.03万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-01 至 2000-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9530719&HistoricalAwards=false
• 关键词: Benthic; Cycling; Accumulation; Organic; Matter

The record of the processes involved in carbon cycling in the oceanic water column are often preserved in the underlying sediments. This project aims to characterize benthic remineralization, burial, and the role of benthic processes in the cycling of organic matter, biogenic opal, and calcium carbonate in sediments of the Antarctic Polar Front and the Ross Sea as part of the U.S.JGOFS Southern Ocean Process Study. The team of investigators will accomplish this by measuring the vertical profiles of the particulate and dissolved forms of these substances in sediment cores along with a natural radioactive tracer (Lead-210). The isotopic measurements will allow the chemical measurements to be transformed into reaction rates.

海洋水体中碳循环过程的记录往往保存在底层沉积物中。 该项目的目的是作为美国JGOFS南大洋过程研究的一部分，描述南极极锋和罗斯海沉积物中的底栖生物矿化、埋藏以及底栖过程在有机物、生物蛋白石和碳酸钙循环中的作用。 调查小组将通过测量沉积物芯中这些物质的颗粒和溶解形式的垂直剖面沿着天然放射性示踪剂（铅-210）来完成这项工作。 同位素测量将允许化学测量转化为反应速率。