A newly observed physical cause of the onset of the subsurface spring phytoplankton bloom in the southwestern East Sea/Sea of Japan SCIE SCOPUS

Cited 6 time in WEB OF SCIENCE Cited 8 time in Scopus
Title
A newly observed physical cause of the onset of the subsurface spring phytoplankton bloom in the southwestern East Sea/Sea of Japan
Author(s)
Son, Y.-T.; Chang, K.-I.; Yoon, S.-T.; Rho, T.; Kwak, J.H.; Kang, C.K.; Kim, K.-R.
KIOST Author(s)
Rho, Tae Keun(노태근)
Publication Year
2014
Abstract
An ocean buoy, UBIM (Ulleung Basin Integrated Mooring), deployed during the spring transition from February to May 2010 reveals for the first time highly resolved temporal variation of biochemical properties of the upper layer of the Ulleung Basin in the southwestern East Sea/Sea of Japan. The time-series measurement captured the onset of subsurface spring bloom at 30 m, and collocated temperature and current data gives an insight into a mechanism that triggers the onset of the spring bloom not documented so far. Low-frequency modulation of the mixed layer depth ranging from 10 m to 53 m during the entire mooring period is mainly determined by shoaling and deepening of isothermal depths depending on the placement of UBIM on the cold or warm side of the frontal jet. The occurrence of the spring bloom at 30 m is concomitant with the appearance of colder East Sea Intermediate Water at buoy UBIM, which results in subsurface cooling and shoaling of isotherms to the shallower depth levels during the bloom period than those that occurred during the pre-bloom period. Isolines of temperature-based NO3 are also shown to be uplifted during the bloom period. It is suggested that the springtime spreading of the East Sea Intermediate Water is one of the important factors that triggers the subsurface spring bloom below the mixed layer. © Author(s) 2014.
ISSN
1726-4170
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2925
DOI
10.5194/bg-11-1319-2014
Bibliographic Citation
Biogeosciences, v.11, no.5, pp.11319 - 11329, 2014
Publisher
European Geosciences Union
Type
Article
Language
English
Document Type
Article
Publisher
European Geosciences Union
Related Researcher
Research Interests

Chemical oceanography,Biogeochemistry,Nutrient Dynamics,화학해양학,생지화학,용존영양염

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