Circulation

Lee, Dong‐Kyu; Seung, Young Ho; Kim, Yun-Bae; Kim, Young Ho; Shin, Ho‐Sang; Shin, Chang-Woong; Chang, Kyung‐Il

doi:10.1007/978-3-319-22720-7_4

Cited by 3 publications

(2 citation statements)

References 110 publications

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“…울릉분지의 가을철 저염수의 연변동 Lee et al, [2016]). CDW is the Changjiang Diluted Water, EKWC and NKCC stands for the East Korean Warm Current and the North Korean Cold Current, respectfully.…”

Section: 결 과mentioning

confidence: 99%

Distribution and Circulation of Autumn Low-salinity Water in the East Sea

Lee¹,

Lee²

2017

Korean Journal of Fisheries and Aquatic Sciences

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Seawater with salinity of 32.5 psu or less is observed in the southern Japan/East Sea (JES) every autumn. It is confined to a surface layer 30-45 m in depth that expands to cover the entire JES in October. Two sources of "autumn low-salinity water" have been identified from historical hydrographic data in the western JES: East China Sea (ECS) water mixed with fresh water discharge from the Yangtze River (Changjiang) and seawater diluted with melted sea ice in the northern JES. Low-salinity water inflow from the ECS begins in June and reaches its peak in September. Low-salinity water from the northern JES expands southward along the coast, and its horizontal distribution varies among years. A rare observational study of the entire JES in October 1969 indicated that water with salinity less than 33.0 psu covered the southwestern JES; the lowest salinity water was found near the Ulleung Basin. In October 1995, the vertical distribution of salinity observed in a meridional section revealed that water with salinity of 33.6 psu or less was present in the area north of the subpolar front.

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Section: 결 과mentioning

confidence: 99%

Distribution and Circulation of Autumn Low-salinity Water in the East Sea

Lee¹,

Lee²

2017

Korean Journal of Fisheries and Aquatic Sciences

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“…Mean surface circulation in the southern Japan Sea based on Lee et al (). Areas of the three most frequent intra thermocline eddy (ITE) appearances by Gordon et al () are indicated by circular arrows.…”

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confidence: 99%

High concentration chlorophyll a rings associated with the formation of intrathermocline eddies

Lee

2018

Limnology & Oceanography

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High concentration chlorophyll a (Chl a) rings formed around anticyclones have been observed frequently in the Japan/East Sea. To study their formation, an anticyclone to intrathermocline eddy (ITE) transformation is examined using hydrographic observations, remotely sensed Chl a, sea level anomaly fields, and sea surface temperature images in the Japan/East Sea. Due to the winter cooling up to March, a cold homogeneous layer forms inside the anticyclone. In April, the East Korean Warm Current from the south merges with the anticyclone and encircles the clockwise‐rotating anticyclone. The wrapping warm current generates a geostrophic flow opposite to the clockwise direction of the anticyclone and effectively decelerates it. The geostrophic flow weakens along the periphery of the eddy as the warm current gradually cools down through horizontal mixing, resulting in an accelerating anticyclonic current around the transformed ITE. A high Chl a concentration area in the form of a ring forms around the ITE along the accelerating, thus horizontally divergent surface flow. The divergence around the ITE continues throughout the summer above the submerged homogeneous lens under the stratified surface layer. Based on observations, it is shown that the accelerating surface flow induced through the anticyclone‐to‐ITE transformation process causes an upward transport of nutrients, enhancing the Chl a concentration around the ITE.

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