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Long-Term Variations in the Hydrochemical and Density Characteristics over the Kola Meridian Section As an Indicator of Changes in the Ecosystem of the Barents Sea

机译：科拉子午线剖面水化学和密度特征的长期变化，作为巴伦支海生态系统变化的指标

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摘要

Long-term time series of the seawater density of the Atlantic origin, its oxygen saturation, and mineral phosphorus content were studied over the Kola Meridian section (70 deg 30 min - 72 deg 30 min N, 30 deg 30 min E) in the southern part of the Barents Sea. The long-term variability of water density is characterized by periodical distortions in the synchronous temporal oscillations at different depths. Interannual variations in water aeration in the near-bottom layers are characterized by relatively deep minima in the oxygen content intermittent with longer periods when aeration slightly exceeds the "norm." The oxygen content in seawater decreases with the growth of the water column density stratification. The phosphate concentration in the Atlantic waters increased from the beginning of the 1960s to the middle of the 1980s and later decreased to a long-term average value. A similar dynamics of the phosphate concentration was also observed in other regions of the northeastern Atlantic. Posible correlations between the long-term variability of the climate and density structure of water masses, the chemical composition of the near-bottom waters, and production and biomass of plankton and fishes in the ecosystem of the Barents Sea are discussed in this paper.EE
机译：研究了南部南部科拉子午线段（70 deg 30 min-72 deg 30 min N，30 deg 30 min E）上大西洋起源的海水密度，其氧饱和度和矿物质磷含量的长期时间序列。巴伦支海的一部分。水密度的长期变化特征是不同深度的同步时间振荡中的周期性变形。近底层的水通气量的年际变化的特征是，当通气量略微超过“标准”时，氧气含量会相对较低地间歇性地存在较长的时间。海水中的氧气含量随着水柱密度分层的增长而降低。从1960年代初到1980年代中期，大西洋水域的磷酸盐浓度增加，后来又降至长期平均值。在东北大西洋的其他地区也观察到了类似的磷酸盐浓度动态。本文讨论了巴伦支海生态系统中气候的长期变异性和水团的密度结构，近底部水域的化学组成以及浮游生物和鱼类的产量和生物量之间的可能相关性。

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  • 来源
    《Oceanology》 |2001年第4期|共9页
  • 作者

    O.V.Titov;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 海洋学;
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