Variability of the Dokdo Abyssal Current observed in the Ulleung Interplain Gap of the East/Japan Sea SCIE SCOPUS

Cited 3 time in WEB OF SCIENCE Cited 4 time in Scopus
Title
Variability of the Dokdo Abyssal Current observed in the Ulleung Interplain Gap of the East/Japan Sea
Author(s)
Kim, Yun-Bae; Chang, Kyung-Il; Park, Jae-Hun; Park, Jong Jin
Publication Year
2013-01
Abstract
Subinertial fluctuation of a strong northward deep current, which is referred to the Dokdo Abyssal Current (DAC) by Chang et al. (2009), is investigated fromcurrent records for about 16.5 and 8.0months in the Ulleung Interplain Gap of the East/Japan Sea. The current below 300 m is bottom-intensified and has nearly depth-independent flow. Near bottom, the spectral peaks of the current were found near 10, 20, and 60 d. The DAC variability near 10 d and 20 d is reasonably consistent with the linear theory of topographic Rossby waves (TRWs) in the following aspects: (1) The motion is columnar and bottom-intensified; (2) the theoretical cutoff frequency is similar to the observation; (3) The observation-based angles of the wavenumber vector are in good agreement with the theoretical ones. The wavelengths of the TRWs with periods of near 10 d and 20 d near Dokdo are significantly shorter than those with similar timescales in the open oceans (100-250 km). It is primarily due to the weak stratification below 300 m in the East Sea. The deep current fluctuations with periods of near 10 d and 20 d were accompanied by warm events in the upper layer resulting from eddying processes and/ormeandering of the Tsushima Warm Current.
ISSN
0253-505X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3286
DOI
10.1007/s13131-013-0263-y
Bibliographic Citation
ACTA OCEANOLOGICA SINICA, v.32, no.1, pp.12 - 23, 2013
Publisher
SPRINGER
Subject
TOPOGRAPHIC ROSSBY WAVES; GULF-OF-MEXICO; SOUTHWESTERN EAST SEA; JAPAN/EAST SEA; BOTTOM WATER; DEEP FLOW; CIRCULATION PATTERNS; CONTINENTAL RISE; ATLANTIC; BASIN
Keywords
East/Japan Sea; Ulleung Interplain Gap; Deep currents; Topographic Rossby waves
Type
Article
Language
English
Document Type
Article
Publisher
SPRINGER
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