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http://dx.doi.org/10.7837/kosomes.2019.25.7.898

Evaluation of Sejong Base as a Long Term Monitoring Site for Chromophoric Dissolved Organic Matter (CDOM) Variation in the Antarctic Ocean  

Jeon, Mi-Hae (Pukyong National University, Department of Oceanography)
Park, Mi-Ok (Pukyong National University, Department of Oceanography)
Kang, Sung-Ho (Korea Polar Research Institute, Division of Polar Ocean Sciences)
Jeon, Misa (Korea Polar Research Institute, Division of Polar Ocean Sciences)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.25, no.7, 2019 , pp. 898-905 More about this Journal
Abstract
As the positive feedback between the absorption of chromophoric dissolved organic matter (CDOM) and acceleration of ice melt can impact the aquatic biota and dynamic heat budget, long-term monitoring of the CDOM variation in the polar ocean is necessary. However, the monitoring of CDOM is not easy because of harsh weather and difficult access, especially in the Antarctic Ocean. Therefore, the purpose of this study was to find a suitable long-term monitoring site for CDOM variation; we selected Maxwell Bay and Marian Cove at Sejong Base and horizontal and vertical distributions of CDOM were measured. After a 72 hr time-series measurement test of the CDOM variation at Sejong Dock and Sejong Cape in Maxwell Bay, Sejong Dock was selected, as it does not haveland discharge effects. The seasonal variation of CDOM was evident and the average CDOM concentration of Maxwell Bay was comparable with the adjacent sea. The CDOM at Sejong Dock from February to November 2010 was the highest in the fall and winter and the lowest during spring and summer. Thus, based on our one-year CDOM data, we suggest that Sejong Dock in Maxwell Bay is suitable for long-term monitoring of CDOM as an indicator of photochemical and biological environmental change and an important factor in determining the heating budget in the Antarctic Ocean.
Keywords
CDOM; Long-term monitoring; Annual variation; Sejong Base; Antarctic Ocean;
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