Structure and seasonal variability of the deep mean circulation of the East Sea (Sea of Japan)

Choi, Youngjin; Yoon, Jihyun

doi:10.1007/s10872-010-0031-y

Cited by 14 publications

(10 citation statements)

References 20 publications

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“…In Section 4, we examine the impact of horizontal grid resolution, wind, throughflow, DWF forcings and bottom topography to the deep circulation. We also describe why deep EKE is larger in the northern East/Japan Sea than in the southern East/Japan Sea, which is identical to the observation data (Choi and Yoon, 2010;Park and Kim, 2013), in opposition to Hogan and Hulburt (2000). The driving forcings of the eddy-driven along-slope deep current are shown in Section 5.…”

Section: Introductionsupporting

confidence: 81%

“…Gravitational The volume transport stream function of the simulated deep circulation is analogous to that obtained from ARGO float data (Choi and Yoon, 2010) in the East/Japan Sea (Fig. 5).…”

Section: Mean Flows In the Model Results And From Observed Data (Expsupporting

confidence: 53%

“…In a primitive ocean general circulation model (OGCM) with extra-fine resolution (a horizontal grid interval of 1/36°a nd 46 vertical levels), cyclonic deep mean circulation was simulated successfully despite the lack of the DWF forcing (Kim, 2007). However, in the OGCM model (RIAM Ocean Model), maximum volume transport in the Japan Basin was only about 3.5 Sv (1 Sv = 10 6 m 3 s −1 ); much less than the observed results of about 10 Sv (Choi and Yoon, 2010).…”

Section: Introductionmentioning

confidence: 65%

“…The difference in current direction between observations and deep currents simulated using the primitive ocean general circulation model (RIAM Ocean Model) with a 1/36°grid resolution was reported to be 39.1° (Kim, 2007). Choi and Yoon (2010) reported monthly mean variation in deepcurrent velocity data obtained by using ARGO floats and moored current meters ( Fig. 8A and B).…”

Section: Mean Flows In the Model Results And From Observed Data (Expmentioning

confidence: 99%

“…However, the abyssal currents suggested by Hogan and Hurlburt (2000) have no verification from the observation such as current meter or ARGO data. Besides, eddy kinetic energy (EKE) of the deep layer is larger in the southern East/Japan Sea than in the northern East/Japan Sea in Hogan and Hulburt (2000), while EKE of the abyssal layer in the observation data is larger in the Japan Basin (Choi and Yoon, 2010;Park and Kim, 2013).…”

Section: Introductionmentioning

confidence: 94%

See 4 more Smart Citations

Simulation of eddy-driven deep circulation in the East/Japan Sea by using a three-layer model with wind, throughflow and deep water formation forcings

Park

Shin

Yoon

et al. 2015

Journal of Marine Systems

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Section: Introductionsupporting

confidence: 81%

Section: Mean Flows In the Model Results And From Observed Data (Expsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 65%

Section: Mean Flows In the Model Results And From Observed Data (Expmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

See 3 more Smart Citations

Simulation of eddy-driven deep circulation in the East/Japan Sea by using a three-layer model with wind, throughflow and deep water formation forcings

Park

Shin

Yoon

et al. 2015

Journal of Marine Systems

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The effects of geothermal heating on the East/Japan Sea circulation

Park

Lee

et al. 2013

JGR Oceans

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[1] The magnitude of geothermal heating in the East/Japan Sea is about 100 mW/m 2 , twice that of a typical abyssal plain. In addition, bottom stratification in the East/Japan Sea is much weaker than that typical of the open ocean. Thus, geothermal heating could have more prominent effects in the East/Japan Sea than in the open ocean, and we tested this hypothesis via numerical modeling. With less than 100 mW/m 2 bottom heat flux, we were able to reproduce bottom mixed layers that are thicker than~1000 m as observed. Previously, no numerical model has been successful in reproducing such bottom mixed layers. Geothermal heating intensifies the bottom flows but the simulated flows are not as strong as the observed ones. Over the northern part of the East/Japan Sea, reduction in deep stratification strengthens deep water mass formation, intensifying cyclonic circulations located over this area, so the effects of the heating extend to the surface. As the cyclonic circulation becomes stronger, the water at the center of the gyre is trapped and more exposed to cold air, so it becomes cooler, and colder deep water is produced. When the geothermal heating is strong enough, the surface cooling effect dominates the bottom heating and the deep layer becomes cooler showing that the nonlinear effects of geothermal heating are far reaching. Thus, to account for the observed dynamics, the full three-dimensional circulation at the basin scale is needed.

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