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首页> 外文期刊>Oceanographic Literature Review >The world's largest coastal deoxygenation zone is not anthropogenically driven
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The world's largest coastal deoxygenation zone is not anthropogenically driven

机译：世界上最大的沿海脱氧区不是人为驱动的

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摘要

The growing number of oxygen-deficient coastal zones around the world and their impacts on marine life has always been a controversial issue as their development is largely attributed to anthropogenic activities which can be mitigated by human actions. However, contrary to this prevailing understanding, we show here for the first time, using new coherent datasets from estuaries to coastal to offshore regions, that the world's largest hypoxic-anoxic zone along the west coast of India is formed through a natural process, i.e. upwelling of deoxygenated waters during the summer monsoon. We further demonstrate that the persistence and extent of this coastal oxygen deficiency depend on the degree of deoxygenation of source waters for the up-welling. Consequently, the anoxia is confined only to the central shelf between 11 ° and 18° N, which is equivalent to almost half of the western Indian shelf, where upwelling brings suboxic waters from the core oxygen minimum zone in the Arabian Sea.
机译：世界各地越来越多的缺氧沿海地区及其对海洋生物的影响一直是一个有争议的问题，因为他们的发展在很大程度上归因于人类行为可以减轻的人为活动。 然而，与这种普遍的理解相反，我们首次在这里展示，利用来自河口到近海地区的新的一致性数据集，即世界最大的印度西海岸最大的缺氧缺氧区是通过自然过程形成的，即 夏季季风脱氧水域的升值。 我们进一步证明，这种沿海缺氧的持续性和程度依赖于富裕的烃烃的脱氧程度。 因此，缺氧仅限于11°和18°N之间的中央架，这相当于西部印度货架的几乎一半，其中升值从阿拉伯海中的核心氧气最小区域带来了中央区。

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  • 来源
    《Oceanographic Literature Review》 |2021年第6期|1362-1362|共1页
  • 作者

    G.V.M. Gupta; R. Jyothibabu; Ch.V. Ramu;

  • 作者单位

    Centre for Marine Living Resources and Ecology Ministry of Earth Sciences Kochi India;

    Centre for Marine Living Resources and Ecology Ministry of Earth Sciences Kochi India;

    Centre for Marine Living Resources and Ecology Ministry of Earth Sciences Kochi India;

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