Spatial distribution of seasonality of SeaWiFS chlorophyll-a concentrations in the East/Japan Sea
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Title
- Spatial distribution of seasonality of SeaWiFS chlorophyll-a concentrations in the East/Japan Sea
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Author(s)
- Jo, Chun Ok; Park, Sunyoung; Kim, Young Ho; Park, Kyung-Ae; Park, Jong Jin; Park, Mi-Kyung; Li, Shanlan; Kim, Jae-Yeon; Park, Ji-Eun; Kim, Ji-Yoon; Kim, Kyung-Ryul
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Alternative Author(s)
- 김영호
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Publication Year
- 2014-11
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Abstract
- To investigate the spatial characteristics of seasonality in phytoplankton productivity over the entire East/Japan Sea (EJS), a wavelet analysis was applied to SeaWiFS chlorophyll-a (chl-a) data over the period from 1998 to 2007. The wavelet analysis revealed that a 6-month period of change in chl-a concentration, explained by spring and fall blooms, was persistent throughout EJS during the ten years examined. The time series seasonality could be further classified into three patterns: (1) the highest variance peak at the 6-month period, (2) double variance peaks with similar values at the periods of 6- and 12-month, and (3) the highest variance at the 12-month period. A spatial map of the ratios between variances at the 6- and 12-month periods illustrated geographical distribution of the chl-a seasonality patterns. The japan Basin and Ulleung Warm Eddy area were characterized by pattern 1 associated with clear spring and fall blooms. The region near the sub-polar front had seasonality pattern 2 characterized by two similar, weak blooms, and the area of East Koran Bay and the Yamato Basin are distinguished by pattern 3 with strong spring bloom, but irregular and unnoticeable fall bloom due to relatively high chl-a concentrations in wintertime. Distinct regional distribution of the seasonality patterns may suggest that phytoplankton productivity and its seasonal cycles respond not only to basin-scale or mesoscale climate forcing but also to changes in local physical properties characterizing each region. (C) 2014 Elsevier B.V. All rights reserved.
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ISSN
- 0924-7963
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/2684
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DOI
- 10.1016/j.jmarsys.2014.07.004
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Bibliographic Citation
- JOURNAL OF MARINE SYSTEMS, v.139, pp.288 - 298, 2014
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Publisher
- ELSEVIER SCIENCE BV
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Subject
- JAPAN SEA; SPRING BLOOM; OCEAN; TEMPERATURE; SATELLITE; BIOMASS; VARIABILITY; ECOSYSTEMS; CYCLES; GROWTH
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Keywords
- Seasonality; Phytoplankton blooms; Geographical distribution; Physical properties; East/Japan Sea
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Type
- Article
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Language
- English
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Document Type
- Article
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