한국수산과학회

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  • pISSN : 2234-8395
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  • eISSN : 2234-1757

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kfas, vol. 51, no. 5, pp.579-589, October, 2018
DOI. https://doi.org/10.5657/KFAS.2018.0579

Physical Envirionment Associated with Upwelling off the Southeast
Coast of Korea
한국 남동해안의 용승과 관련된 물리환경

이재철*·김대현1
부경대학교 해양학과, 1오션테크㈜ 해양시스템연구소

Data from the two bottom moorings of ADCP (acoustic doppler current profiler), coastal weather station and CTC
(conductivity temperature depth) observations for 2001 were analyzed to describe the physical processes associated
with upwelling off the southeast coast of Korea. Winds were favorable for upwelling during summer, but were not
correlated with currents. Shoaling of isotherms toward the coast due to the baroclinic tilting of the strong East Korean
Warm Current (EKWC) provided a favorable background for immediate upwelling-response of surface temperature
to southerly winds. This baroclinic effect was supported by a significant inverse coherence between the upper-layer
current and bottom temperature near the coast. This upwelling is similar to the Guinea Current upwelling, which
is driven by remote forcing (Houghton, 1989). Persistent southward flow was observed below approximately 10℃
isotherm throughout the observation period.

Keyword : Key words: Upwelling, East Korean Warm Current (EKWC), Baroclinic tilting, Coherence, Bottom temperature

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