After enteringthe study area, the Pacific waters disperse northward cross the Chukchi shelf as threebranches with different nutrients, and cause differentiations in nutrient and surface waterproductivity in the study area.

• 太平洋水自白令海峡进入研究区后，分化成营养盐含量不同的三支分海流横穿楚科奇海陆架向北扩散，导致研究区水体的营养盐和生产力出现分异。