Effects of vertical mixing on low trophic ecosystem in the Ulleung Basin, East Sea

Title
Effects of vertical mixing on low trophic ecosystem in the Ulleung Basin, East Sea
Author(s)
정희석; 장찬주; 강현우
KIOST Author(s)
Jung, Heeseok(정희석)Jang, Chan Joo(장찬주)Kang, Hyoun-Woo(강현우)
Publication Year
2017-05-26
Abstract
Ulleung basin (UB) in the southwestern East Sea shows relatively high primary productivity even in summer. The high productivity is probably associated with nutrient supply by vertical mixing, horizontal transport by ocean currents, or eddy-induced upwelling. In this study we investigated effects of vertical mixing on low trophic ecosystem in the UB using a one- dimensional physical-biological model (1D GOTM-ERSEM), focusing on timing and intensity of phytoplankton bloom. Stratification in the model was given by three different cases with different degree of reality. We found that proper representation of stratification plays a crucial role in timing of phytoplankton bloom by controlling nutrient supply in winter. However, the diatom, a dominant phytoplankton in spring bloom in the UB, was poorly simulated both in timing and strength of bloom, indicating importance of horizontal transport of silicate supply.y-induced upwelling. In this study we investigated effects of vertical mixing on low trophic ecosystem in the UB using a one- dimensional physical-biological model (1D GOTM-ERSEM), focusing on timing and intensity of phytoplankton bloom. Stratification in the model was given by three different cases with different degree of reality. We found that proper representation of stratification plays a crucial role in timing of phytoplankton bloom by controlling nutrient supply in winter. However, the diatom, a dominant phytoplankton in spring bloom in the UB, was poorly simulated both in timing and strength of bloom, indicating importance of horizontal transport of silicate supply.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23952
Bibliographic Citation
The 49th Liege Colloquium on Ocean Dynamics - The 8th Warnemü nde Turbulence Days, pp.1, 2017
Publisher
University
Type
Conference
Language
English
Publisher
University
Related Researcher
Research Interests

Regional climate model development,Ecosystem model,Ocean mid-term prediction,지역기후모형 개발,생태계모형,중기 해양환경 예측

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