Bishop James K B, Wood Todd J, Davis Russ E, Sherman Jeffrey T
Earth Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90-1116, Berkeley, CA 94720, USA.
Science. 2004 Apr 16;304(5669):417-20. doi: 10.1126/science.1087717.
Autonomous floats profiling in high-nitrate low-silicate waters of the Southern Ocean observed carbon biomass variability and carbon exported to depths of 100 m during the 2002 Southern Ocean Iron Experiment (SOFeX) to detect the effects of iron fertilization of surface water there. Control and "in-patch" measurements documented a greater than fourfold enhancement of carbon biomass in the iron-amended waters. Carbon export through 100 m increased two- to sixfold as the patch subducted below a front. The molar ratio of iron added to carbon exported ranged between 10(4) and 10(5). The biomass buildup and export were much higher than expected for iron-amended low-silicate waters.
在2002年南大洋铁实验（SOFeX）期间，自主浮标在南大洋高硝酸盐低硅酸盐水域进行剖面观测，以检测表层水铁施肥的影响，观测到了碳生物量变化以及碳输出到100米深度的情况。对照和“斑块内”测量记录了铁添加水域中碳生物量增加了四倍多。随着斑块俯冲到锋面以下，通过100米的碳输出增加了两到六倍。添加的铁与输出的碳的摩尔比在10⁴到10⁵之间。生物量的积累和输出远高于铁添加的低硅酸盐水域的预期。
