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.

提出了对底栖过程速率的季节和年际变化以及在沉积物 - 水界面上的材料循环及其与颗粒通量的关系的研究。 该研究旨在确定颗粒物输入对海底的季节性变化对沉积物反应的影响，界面上溶解的成分的通量，影响沉积物的生物学活性以及在沉积物中的CACO3保存。 以这种方式，我们试图评估地表海中事件对底栖率和过程的影响。 在百慕大外，选择的地点的特征是在海洋许多地区发现的条件，这使得在直接研究区域以外得出的结论。 还提出了关于在区域范围内控制CAC03在沉积物中保存的因素的研究。 这些研究的重点是评估对底水饱和状态和有机物代谢对CAC03的速率和沉积后溶解程度的影响。 这些研究将在美国东海岸的横断面进行。