On the Salinity-Minimum and Dissolved Oxygen-Maximum Layer in the East Sea (Sea Of Japan)

Kim, K.; Chung, Jae Young

doi:10.1016/s0422-9894(08)70290-3

Cited by 48 publications

(35 citation statements)

References 1 publication

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“…Water masses occupying the intermediate and deep layers south of the subpolar front are all formed in the Japan Basin Talley et al, 2006). The East Sea Intermediate Water (ESIW) characterized by a layer of shallow salinity minimum with a potential temperature range of 1-5 • C is widespread south of the subpolar front in a depth range of 100-500 m (Kim and Chung, 1984;. The ESIW found offshore in the UB is brought into the basin through processes of subduction along the subpolar front .…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2014

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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 NO 3 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.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2014

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“…Gray shading indicates the regions where observation numbers are larger than 500. (Kim and Chung 1984;Kim and Kim 1999), prevails over the western Japan Sea, while High-Salinity Intermediate Water (HSIW), which is characterized by high salinity and high oxygen with potential temperatures of 0.6Њ-5ЊC (Kim and Kim 1999), is distributed in the eastern Japan Sea north of the subpolar front.…”

Section: Introductionmentioning

confidence: 99%

Interannual to Interdecadal Variability in the Japan Sea Based on a New Gridded Upper Water Temperature Dataset

Minobe

Sako

Nakamura

2004

Journal of Physical Oceanography

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A new gridded water temperature dataset of upper 400-m depths (0, 50, 100, 200, 300, and 400 m) for the Japan Sea (or East Sea) is produced by using an optimal interpolation technique from 1930 to 1996, based on oceanographic observations collected in the World Ocean Database 1998. The temperature data are analyzed by a complex empirical orthogonal function (CEOF) with six levels combined using the data for a period from 1957 to 1996, during which most of gridded data are available. Before calculating the CEOFs, low-pass or highpass filters (cutoff period at 7 yr) are applied to separate interannual and decadal temperature changes, respectively. One interannual and two decadal CEOF modes are identified. The interannual first CEOF mode is characterized by the energetic variability around and south of the subpolar front in the western Japan Sea, accompanied by northward and northeastward phase propagations emanating from the Tsushima Strait. The decadal first CEOF mode exhibits a broad structure prevailing over the whole Japan Sea, but large amplitudes are trapped by the subpolar front, with 60Њ-90Њ phase lags between the northeastern and southwestern Japan Sea. The decadal second CEOF mode has a localized structure with strong correlations in the Yamato Basin. The relation between the atmosphere and ocean is analyzed by a correlation analysis of wintertime sea level pressures (SLPs) onto the temporal coefficients of the CEOF modes. The interannual first CEOF mode is accompanied by the SLP anomalies over the western North Pacific Ocean with steep SLP gradients over the Japan Sea, suggesting that this mode is forced by local wind anomalies associated with the SLP changes over the western North Pacific. The decadal first CEOF mode is likely to be caused by changes of the east Asian winter monsoon due to the SLP variability of the northern part of the Siberian high, which is closely associated with the decadal fluctuations of the Arctic Oscillation and the North Atlantic Oscillation. The second decadal CEOF mode is accompanied by high SLP correlations over the central North Pacific associated with strength changes of Aleutian lows, suggestive of remote forcing from the central North Pacific.

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“…This water is termed the upper portion of the Japan Sea Proper Water by Sudo (1986) and later discussed in detail by Senjyu and Sudo (1994). The water found in the southwestern part off the Korean coast, sems to be especially pronounced in freshness and high oxygen content and termed the East Sea Intermediate Water by Kim and Chung (1984).…”

Section: Introductionmentioning

confidence: 99%

Some features of winter convection in the Japan Sea

Seung

Yoon

1995

J Oceanogr

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Historical Russian data provide indication of winter convection reaching down to about 1000 m depth near Vladivostok. However, this kind of convection does not occur every winter. Further data analysis suggests that the location of convection is driven offshore by the coastal buoyant water, which otherwise would be the coastal area. The coastal buoyant water is mostly cold fresh water but occasionally warm coastal water in the south. Due to the large extent of fresh coastal water in the northern part of the basin, the convection does not happen in this area despite the most intense surface cooling.

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On the Salinity-Minimum and Dissolved Oxygen-Maximum Layer in the East Sea (Sea Of Japan)

Cited by 48 publications

References 1 publication

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

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

Interannual to Interdecadal Variability in the Japan Sea Based on a New Gridded Upper Water Temperature Dataset

Some features of winter convection in the Japan Sea

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