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首页> 外文期刊>Estuarine Coastal and Shelf Science >Interannual variability of the Black Sea Proper oxygen and nutrients regime: The role of climatic and anthropogenic forcing
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Interannual variability of the Black Sea Proper oxygen and nutrients regime: The role of climatic and anthropogenic forcing

机译：黑海的年际可变性适当的氧气和养分制度：气候和人为强迫的作用

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摘要

The Black Sea is a unique, stratified, enclosed ocean basin of great importance. The water column provides a wealth of information concerning aerobic-anaerobic biogeochemistry, the responses of which can have links to anthropogenic and climatic forcing. Herein, we synthesize dissolved oxygen (DO) and nutrient data (phosphate, dissolved inorganic nitrogen (DIN), and silicate) for the period 1984-2010 received in the northeastern and western areas of the Sea. In the subsequent analysis we discuss the role of anthropogenic and climatic forcing in the context of the Black Sea oxic layer and oxic/anoxic interface characteristics. The DO concentration in the surface layer and in the Cold Intermediate Layer (CIL) decreased in warm periods and increased in cold periods, correlating to North Atlantic Oscillation (NAO) index variation. The biogeochemical regime of the Black Sea oxygenated upper layer has notably changed since 1999. After 1999 DO concentration in the CIL decreased by 20% while the concentrations in the surface layer changed very little. This provides evidence that the CIL waters were not fully replenished during the winters of the last decade. The nutrient concentrations (DIN and phosphate) in the surface layer decreased significantly in the 2000s compared with the 1980s-1990s. This decrease is regarded as improvement of the Black Sea ecosystem state. Oxygen and nutrient dynamics in the middle pycnocline have been decoupled since 1999. Presently physical (climatic) forcing is the dominant affecting factor controlling the Sea oxygen and nitrogen regime.
机译：黑海是一个非常重要的独特，分层，封闭的海盆。水柱提供了有关好氧-厌氧生物地球化学的大量信息，其响应可能与人为和气候强迫有关。在这里，我们综合了在海的东北和西部地区接收到的1984-2010年期间的溶解氧（DO）和营养数据（磷酸盐，溶解的无机氮（DIN）和硅酸盐）。在随后的分析中，我们讨论了人为和气候强迫在黑海含氧层和含氧/缺氧界面特征中的作用。表层和冷中间层（CIL）中的DO浓度在暖期下降，在冷期增加，这与北大西洋涛动（NAO）指数变化有关。自1999年以来，黑海含氧上层的生物地球化学状况发生了显着变化。1999年以后，CIL中的DO浓度降低了20％，而表层中的DO变化很小。这提供了证据，表明在过去十年的冬天，CIL水没有得到充分补充。与1980年代至1990年代相比，2000年代表层的营养素浓度（DIN和磷酸盐）显着下降。这种减少被认为是黑海生态系统状况的改善。自1999年以来，中部比诺克星的氧气和养分动力学已脱钩。目前，物理（气候）强迫是控制海洋氧气和氮气状况的主要影响因素。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2014年第1期|134-145|共12页
  • 作者

    S. Pakhomova; E. Vinogradova; E. Yakushev; A. Zatsepin; G. Shtereva; V. Chasovnikov; O. Podymov;

  • 作者单位

    P.P. Shirshov Institute of Oceanology RAS, Nakhimovski Prosp., 36, 117997 Moscow, Russia;

    P.P. Shirshov Institute of Oceanology RAS, Nakhimovski Prosp., 36, 117997 Moscow, Russia;

    P.P. Shirshov Institute of Oceanology RAS, Nakhimovski Prosp., 36, 117997 Moscow, Russia,Norwegian Institute for Water Research, Gaustadalleen 21, NO-0349 Oslo, Norway;

    P.P. Shirshov Institute of Oceanology RAS, Nakhimovski Prosp., 36, 117997 Moscow, Russia;

    F. Nansen Institute of Oceanology BAS, First May Street 40, P.O. Box 152, Varna 9000, Bulgaria;

    The Southern Branch of the P.P. Shirshov Institute of Oceanology RAS, Golubaya bukhta, 353470 Gelendjik-7, Russia;

    The Southern Branch of the P.P. Shirshov Institute of Oceanology RAS, Golubaya bukhta, 353470 Gelendjik-7, Russia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    dissolved oxygen; nutrient cycles; hydrogen sulphide; climatic changes; Black Sea;

    机译：溶解氧营养循环;硫化氢;气候变化;黑海;

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