A SUMMERTIME SUBSURFACE COUNTERCURRENT IN THE EAST COAST OF JEJU-DO

Title
A SUMMERTIME SUBSURFACE COUNTERCURRENT IN THE EAST COAST OF JEJU-DO
Author(s)
이재학; 홍창수; 박진구; 주세종
KIOST Author(s)
Lee, Jae Hak(이재학)
Alternative Author(s)
이재학; 홍창수; 박진구; 주세종
Publication Year
2013-11-13
Abstract
Understanding the current system is essential to study oceanic environment problem. In order to monitor the current structure near Jeju-do in the northern East China Sea where the water depth is about 70 m and the Thushima Current passes, Korea Institute of Ocean Science and Technology deployed a current meter (Aquadorpp 400kHz Profiler) mooring in the region southeast of Jeju-do in May 2012. The time series current data recorded in the site reveal the strong seasonal variation of current structure. The wintertime current was dominated by the northeastward Thushima Current and showed the barotropic vertical structure. In summer, however, an unexpected subsurface (southward) countercurrent was observed in the depth below the pycnocline with its maximum speed of about 50 cm/sec. It is also found that the existence of southward coastal undercurrent is consistent with the appearance of bottom cold water observed in the region in summer.orea Institute of Ocean Science and Technology deployed a current meter (Aquadorpp 400kHz Profiler) mooring in the region southeast of Jeju-do in May 2012. The time series current data recorded in the site reveal the strong seasonal variation of current structure. The wintertime current was dominated by the northeastward Thushima Current and showed the barotropic vertical structure. In summer, however, an unexpected subsurface (southward) countercurrent was observed in the depth below the pycnocline with its maximum speed of about 50 cm/sec. It is also found that the existence of southward coastal undercurrent is consistent with the appearance of bottom cold water observed in the region in summer.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26549
Bibliographic Citation
The 7th International symposium on the East Asian Environmental Problems 2013, pp.1, 2013
Publisher
RIEAE, Kyushu University
Type
Conference
Language
English
Publisher
RIEAE, Kyushu University
Related Researcher
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse