GSTDTAP  > 气候变化
DOIDOI10.1088/1748-9326/abe9eb
The world's largest coastal deoxygenation zone is not anthropogenically driven
G V M Gupta; R Jyothibabu; Ch V Ramu; A Yudhistir Reddy; K K Balachandran; V Sudheesh; Sanjeev Kumar; N V H K Chari; Kausar F Bepari; Prachi H Marathe; B Bikram Reddy; Anil Kumar Vijayan
2021-04-16
发表期刊Environmental Research Letters
出版年2021/04/16
英文摘要

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 upwelling. 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.

领域气候变化
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/322773
专题气候变化
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GB/T 7714
G V M Gupta,R Jyothibabu,Ch V Ramu,et al. The world's largest coastal deoxygenation zone is not anthropogenically driven[J]. Environmental Research Letters,2021.
APA G V M Gupta.,R Jyothibabu.,Ch V Ramu.,A Yudhistir Reddy.,K K Balachandran.,...&Anil Kumar Vijayan.(2021).The world's largest coastal deoxygenation zone is not anthropogenically driven.Environmental Research Letters.
MLA G V M Gupta,et al."The world's largest coastal deoxygenation zone is not anthropogenically driven".Environmental Research Letters (2021).
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