Benthic Fluxes of Biogeochemically Active Materials on the JGOFS Transect in the Central Equatorial Pacific

海底和海底上部的成岩作用 沉积柱调节了 沉积物中埋藏的海底微粒雨， 再循环到上层水体中。 的 再循环焊剂的相对量可以通过以下方式评估： 利用原位培养直接测量底栖生物交换 室内，辅以孔隙水和固相研究 化学. 作为JGOFS计划的一部分， 测量氡、营养物、钙、碱度， 氧气将在该项目下进行。 此外，本发明还提供了一种方法， 将收集培养室样本，用于研究 微量金属和DOM通量的其他研究人员。 结果 这些研究将有助于联系海底的成岩作用， 在沉积物中的JGOFS测量生产力和 粒子雨率 他们将协助解释 保存在沉积物中的古海洋学记录 了解在海洋中海底过程的重要性， 全球碳和养分的地球化学通量。

Diagenesis on the seafloor and in the upper portion of the sediment column regulates the relative fractions of the particulate rain to the seafloor that are buried in sediments or remineralized and recycled into the overlying water column. The relative magnitute of the recycled flux can be assessed by direct measurement of benthic exchange using in situ incubation chambers, complemented by studies of pore water and solid phase chemistry. As part of the JGOFS program direct flux measurements of radon, nutrients, calcium, alkalinity, and oxygen will be carried out under this project. In addition, incubation chamber samples will be collected for studies of the trace metal and DOM fluxes by other investigators. Results from these studies will serve to relate diagenesis on the seafloor and in the sediments to JGOFS measurements of productivity and particle rain rate. They will assist in interpreting the paleoceanographic record preserved in sediments and in understanding the importance of processes at the seafloor in the global biogeochemical fluxes of carbon and nutrients.