Circulation near Ulleung Basin in the East /Japan Sea as studied from ARGO data

Circulation near Ulleung Basin in the East /Japan Sea as studied from ARGO data
석문식; Shree Ram Prakya
Publication Year
The surface features in the East Sea are remarkably rich with boundary currents such as East Korea Warm Current (EKWC), North Korea Cold Current (NKCC) and Tsushima Warm Current (TWC), with the existence of the permanent subpolar front situated in the middle of the basin, around which numerous eddies are generated. Besides, meso-scale warm eddies are well recognizable in various locations such as Ulleung Basin in the East/Japan Sea. Satellite images of Sea Surface Temperature and Sea Surface Height show surface oceanic features such as meso-scale warm eddies, fronts. However, the vertical extent of these features can not be studied by using satellite images due to the known fact that the measurements made by a satellite sensor only represents oceanic surface. In situ observations are essential to study the vertical extent of these features. ARGOs global array of profiling floats will provide the in situ observations in time and space. The present study aims on investigating the formation of Ulleung Eddy, its horizontal and vertical extent using the autonomous profiling ARGO floats data. The Ulleung Eddy originates from the EKWC and forms from a southward flow that closes into anticyclonic circulation around Ulleung Isalnd. This could penetrate up to deeper depths (approximately 700 m) from the surface. The interaction between warm and cold waters both in the horizontal and vertical yields a high variability of circulation in the Ulleung Basin.
Bibliographic Citation
IUGG/IAPSO, pp.1, 2007
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