An observation of primary production enhanced by coastal upwelling in the southwest East/Japan Sea
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Title
- An observation of primary production enhanced by coastal upwelling in the southwest East/Japan Sea
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Author(s)
- Hahm, Doshik; Rhee, Tae Siek; Kim, Hyun-Cheol; Jang, Chan Joo; Kim, Yong Sun; Park, Jae-Hun
- KIOST Author(s)
- Jang, Chan Joo(장찬주); Kim, Yong Sun(김용선)
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Alternative Author(s)
- 장찬주; 김용선
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Publication Year
- 2019-07
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Abstract
- Coastal upwelling (CU) is an important process that causes changes in physical and chemical properties, resulting in variation of biological processes in a coastal area. In the southwestern part of the East/Japan Sea (SWES), CU has been alleged as one of the mechanisms responsible for higher net primary production (NPP) than the rest of the East/Japan Sea. We provide, for the first time, high spatial resolution underway observations of sea surface temperature, salinity, chlorophyll-a fluorescence and Delta(O-2/Ar), revealing the physical and biological characteristics of the upwelled waters in the SWES. The cold, upwelled waters retained high fluorescence and Delta(O-2/Ar), consistent with enhanced phytoplankton biomass and biological O-2 production by CU. The net community production (NCP) in the ambient and upwelled waters were 33 +/- 19 and 77 +/- 41 mmol O-2 m(-2) d(-1), respectively. The latter should be considered as a lower bound, containing a significant fraction of low O-2 waters from subsurface. Satellite observation indicated that NPP in the upwelled waters were higher than the ambient waters by 51%. This implies that up to half of higher NPP in the SWES than the rest of the East/Japan Sea can be ascribed to CU events.
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ISSN
- 0924-7963
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/592
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DOI
- 10.1016/j.jmarsys.2019.03.005
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Bibliographic Citation
- JOURNAL OF MARINE SYSTEMS, v.195, pp.30 - 37, 2019
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Publisher
- ELSEVIER SCIENCE BV
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Keywords
- Coastal upwelling; Primary production; East Sea; O-2/Ar
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Type
- Article
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Language
- English
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Document Type
- Article
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