naa a22 4500 510753558 CHVBK 20180411083113.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s13131-013-0263-y doi (NATIONALLICENCE)springer-10.1007/s13131-013-0263-y Variability of the Dokdo Abyssal Current observed in the Ulleung Interplain Gap of the East/Japan Sea [Elektronische Daten] [Yun-Bae Kim, Kyung-Il Chang, Jae-Hun Park, Jong Park] 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. The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg, 2013 East/Japan Sea nationallicence Ulleung Interplain Gap nationallicence Deep currents nationallicence Topographic Rossby waves nationallicence Kim Yun-Bae East Sea Research Institute, Korea Institute of Ocean Science and Technology, 767-813, Uljin, Republic of Korea aut Chang Kyung-Il Research Institute of Oceanography, School of Earth and Environmental Sciences, Seoul National University, 151-742, Seoul, Republic of Korea aut Park Jae-Hun Ocean Science Research Department, Korea Institute of Ocean Science and Technology, 426-744, Ansan, Republic of Korea aut Park Jong Department of Oceanography, Kyungpook National University, 742-711, Sangju, Republic of Korea aut Acta Oceanologica Sinica The Chinese Society of Oceanography 32/1(2013-01-01), 12-23 0253-505X 32:1<12 2013 32 13131 https://doi.org/10.1007/s13131-013-0263-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s13131-013-0263-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim Yun-Bae East Sea Research Institute, Korea Institute of Ocean Science and Technology, 767-813, Uljin, Republic of Korea aut NATIONALLICENCE 700 1- Chang Kyung-Il Research Institute of Oceanography, School of Earth and Environmental Sciences, Seoul National University, 151-742, Seoul, Republic of Korea aut NATIONALLICENCE 700 1- Park Jae-Hun Ocean Science Research Department, Korea Institute of Ocean Science and Technology, 426-744, Ansan, Republic of Korea aut NATIONALLICENCE 700 1- Park Jong Department of Oceanography, Kyungpook National University, 742-711, Sangju, Republic of Korea aut NATIONALLICENCE 773 0- Acta Oceanologica Sinica The Chinese Society of Oceanography 32/1(2013-01-01), 12-23 0253-505X 32:1<12 2013 32 13131 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer