Diagenesis and the Exchange of Soluble Substances between the Oceans and the Sediments

成岩作用以及海洋和沉积物之间可溶物质的交换

• 批准号: 8711962
• 负责人: Frederick Sayles
• 金额: $ 78.75万
• 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: 1987
• 资助国家: 美国
• 起止时间: 1987-10-15 至 1991-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8711962&HistoricalAwards=false
• 关键词: Diagenesis; Exchange; Soluble; Substances; between

Studies of seasonal and interannual variations of rates of benthic processes and the cycling of material across the sediment-water interface and their relationship to particle fluxes are proposed. The research seeks to determine the influence of seasonal changes in the input of particulate matter to the sea floor on sediment reactions, fluxes of dissolved components across the interface, biological activity as it affects sediments, and the preservation of CaCO3 in the sediments. In this fashion we seek to evaluate the influence of events in the surface ocean upon benthic rates and processes. The site chosen, off Bermuda, is characterized by conditions found in many areas of the ocean making the conclusions drawn applicable beyond the immediate study area. Research on the factors governing the preservation of CaC03 in sediments on a regional scale is also proposed. These studies are focussed upon evaluating the effects on bottom water saturation state and organic matter metabolism upon rates and the extent of post-deposition dissolution of CaC03. The studies would be carried out on a transect of the east coast of the United States.

研究了全球气候变化率的季节和年际变化， 海底过程和物质在海洋中的循环 沉积物-水界面及其与颗粒的关系 提出了通量。 该研究旨在确定 颗粒物输入季节变化的影响 物质对海底沉积物反应的影响， 溶解的成分穿过界面，生物活性 因为它会影响沉积物，而CaCO 3在沉积物中的保存 沉积物 在这种情况下，我们试图评估影响 表层海洋事件对底栖速率的影响， 流程. 选址在百慕大外海，其特点是 在海洋的许多地区发现的条件， 得出的结论适用于直接研究领域之外。 关于影响保存的因素的研究 还提出了区域尺度上沉积物中的CaCO 3。 这些 研究的重点是评估对海底的影响， 水分饱和状态与有机质代谢 和CaCO 3的沉积后溶解的程度。 的 研究将在东海岸的一个横断面上进行， 美国的