Global Synthesis of Deep Ocean Carbon, Carbonate, Opal and Nutrient Particle Fluxes, Benthic Fluxes and Sediment Accumulation

对全球生物源通量的准确理解需要综合卫星、过程、时间序列和海底研究，每一项研究都提供独特的信息。卫星观测提供了表面色素分布的全球天气图像，但本身并不能限制从光带到深海的通量。过程和时间序列研究提供了关于生物源材料的生产、转化和通量的详细信息，但仅限于数量非常有限的特定地点。海底研究虽然不限制短期时间变率，但提供了对深海通量全球分布的评估。出于这个原因，PI建议建立一个基于一般成岩模型的全盆地范围的碳通量定量描述，该模型将全球海底有机碳、碳酸钙、蛋白石和底栖氧气的测量结果纳入其中。此外，PI还将把营养物和选定的金属通量（Ba和Ge）汇编成同一数据集，以便将这些成分的通量模式与碳通量进行比较。预计这项研究的结果将产生一个有机碳-碳酸钙-蛋白石模型，通过该模型可以表示碳酸钙和蛋白石聚集对有机碳聚集的影响，并允许在开发改进的海底生物通量描述时考虑其他环境因素。

ABSTRACTOCE-9911707The development of an accurate understanding of global biogenic fluxes will require the synthesis of satellite, process, time-series and seafloor studies, each providing unique information. Satellite observations provide global, synoptic images of surface pigment distributions, but by themselves do not constrain fluxes from the photic zone to the deep ocean. Process and time-series studies provide detailed information about the production, transformation and fluxes of biogenic materials, but at a very limited number of specific locations. Seafloor studies, while not constraining short-term temporal variability, provide an assessment of the global distribution of the deep oceanic fluxes. For this reason, the PI proposes to develop a basin-wide, quantitative description of carbon fluxes based on a general diagenetic model into which global seafloor measurements of organic carbon, calcium carbonate, opal and benthic oxygen are assimilated. In addition, the PI also will compile nutrient and selected metal fluxes (Ba and Ge) into the same data set so that flux patterns of these components can be compared to carbon fluxes. It is expected that results from this study will yield an organic carbon-calcium carbonate-opal model by which the impact of calcium carbonate and opal accumulations on the organic carbon accumulation can be represented, as well as the permit other environmental factors to be considered in developing an improved description of seafloor biogenic fluxes.