Meso and submesoscale structures from the Geostationary Ocean Color Imager and a model in the southwestern East Sea

Title
Meso and submesoscale structures from the Geostationary Ocean Color Imager and a model in the southwestern East Sea
Author(s)
박영규; 장연식; 민홍식; 서성봉; 최병주
KIOST Author(s)
Park, Young Gyu(박영규)Chang, Yeon S.(장연식)Seo, Seongbong(서성봉)
Publication Year
2015-06-24
Abstract
Using high resolution (~500 m) ocean color images taken by the Geostationary Ocean Color Imager we investigated the power spectral density (PSD) of meso and submesoscale flow features in summer and winter separately over the southwestern part of the East Sea. Over the mesoscale range the power dependence of PSD to wavelength k was about -1.7 in both seasons. Over the submesoscale range the power dependence was smaller but showed seasonal difference. The power dependence was smaller in winter suggesting stronger submesoscale activities. We confirmed these findings using a high resolution ocean circulation model. The strength of mixing estimated using the Finite-Size Lyapunov Exponents and vertical relative dispersion coefficients with the model outputs was highly correlated with the submesoscale features rather than the mesoscale ones although the energy level of the former is much smaller than that of latter. Thus mixing would be stronger during winter when submesosacle flows are more active.rt of the East Sea. Over the mesoscale range the power dependence of PSD to wavelength k was about -1.7 in both seasons. Over the submesoscale range the power dependence was smaller but showed seasonal difference. The power dependence was smaller in winter suggesting stronger submesoscale activities. We confirmed these findings using a high resolution ocean circulation model. The strength of mixing estimated using the Finite-Size Lyapunov Exponents and vertical relative dispersion coefficients with the model outputs was highly correlated with the submesoscale features rather than the mesoscale ones although the energy level of the former is much smaller than that of latter. Thus mixing would be stronger during winter when submesosacle flows are more active.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25375
Bibliographic Citation
26th IUGG General Assembly, pp.1, 2015
Publisher
IUGG
Type
Conference
Language
English
Publisher
IUGG
Related Researcher
Research Interests

ocean circulation,ocean mixing,marine debris,해양순환,해양혼합,해양부유물

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