极地研究(英文版)2002，Vol.13Issue(2)：145-156,12.
Vertical properties of nutrients and oxygen under temperature-salinity structure of the Bering Basin in July 1999
Vertical properties of nutrients and oxygen under temperature-salinity structure of the Bering Basin in July 1999
摘要
Abstract
The China R/V Xuelong went on the first Arctic scientific cruise, and we obtained 271 hydro-chemical samples from 22 deep-sea stations in the Bering Basin in late July, 1999. Here we describe vertical properties of silicate [Si], dissolved inorganic nitrogen [DIN] or [N] (nitrate plus ammonium plus nitrite), phosphate [P] and oxygen [O2] in seawater under potential temperature-salinity structure. The seasonal stratification in the summer and the water exchanges of the North Pacific Ocean over the Bering Basin resulted in that the four layers of vertical structure with two thermoclines may be found. Vertical [Si] and [N] and [P] profiles show that the nutrients are consumed mainly in ≤50 m and the order of deficient nutrients is [Si] the first, [N] the second and [P] the third. The [N] and [P] increase with depth downward to about 500 m and then both decrease, but the [Si] increases from 150 m to 2000 m or the bottom. In ≥150 m the [O2] decreases, which is related with both [P] and [N] increasing closely. Seawater [N]:[P] ratios are 6-12 in ≤50 m, 10.5-14.3 in 100-150 m and 11.7-15.8 from 300 m to the bottom.关键词
nutrients/oxygen/potential temperature/salinity/Bering Basin/ArcticKey words
nutrients/oxygen/potential temperature/salinity/Bering Basin/Arctic分类
天文与地球科学引用本文复制引用
金明明..Vertical properties of nutrients and oxygen under temperature-salinity structure of the Bering Basin in July 1999[J].极地研究(英文版),2002,13(2):145-156,12.基金项目
This work was supported by the 1999 China First Arctic Scientific Investigation, and by the ecological 973 Program of China (G1999043704). （G1999043704）
