SGER: North Pacific Subtropical Gyre

摘要 化学和生物海洋学家长期以来一直困惑于中央海洋环流初级生产的营养物质，特别是氮的来源。 在北太平洋中部的情况下，一些人认为固氮细菌可能是答案，而一个较小的群体认为，来自盆地其他部分的氮平流更有可能。 在这个小而聪明的研究中，首席研究员和一群来自 的 华盛顿大学将联合收割机从华盛顿到夏威夷的航行中进行的空间连续化学和水文测量，以估计从北美大陆架到盆地内部的水平迁移的重要性。 这将是第一次制作分辨率足够高的水平剖面图，以评估边缘至中心环流输送营养物的重要性。

ABSTRACT Chemical and biological oceanographers have long puzzled over the source of nutrients, especially nitrogen, to primary production in the central ocean gyres. In the case of the central North Pacific, some believe that nitrogen fixing bacteria may be the answer while a smaller group believes that advection of nitrogen from other parts of the basin is more likely. In this small but clever study, the principal investigator and a group of students from the University of Washington will combine spatially continuous chemical and hydrographic measurements taken underway on a cruise from Washington to Hawaii to estimate how important horizontal transport from the North American shelf to the basin interior can be expected to be. This will be the first time that a horizontal profile of sufficient resolution has been made to allow assessment of the importance of margin-to-central gyre transport of nutrients.