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

海底和沉淀柱上部的成岩作用调节着埋藏在沉积物中或重新矿化并循环进入上覆水柱的颗粒雨与海底的相对比例。回收通量的相对大小可以通过使用原位培养箱直接测量底栖生物交换来评估，辅之以孔隙水和固相化学研究。作为JGOFS计划的一部分，将在该项目下进行氡、营养物质、钙、碱度和氧的直接通量测量。此外，还将收集孵化室样本，以供其他研究人员研究痕量金属和DOM熔剂。这些研究的结果将有助于将海底和沉积物中的成岩作用与JGOFS对生产力和颗粒降雨率的测量联系起来。它们将有助于解释保存在沉积物中的古海洋学记录，并有助于理解海底过程在全球碳和营养的生物地球化学通量中的重要性。

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.