caa a22 4500 467947074 CHVBK 20180405193738.0 cr unu---uuuuu 170328e20041001xx s 000 0 eng 10.1007/s10872-004-5778-6 doi (NATIONALLICENCE)springer-10.1007/s10872-004-5778-6 (NATIONALLICENCE)springer-10.1007/s10872-005-5778-1 Intrusion of Less Saline Shelf Water into the Kuroshio Subsurface Layer in the East China Sea [Elektronische Daten] [Atsuhiko Isobe, Eiji Fujiwara, Pil-Hun Chang, Koichi Sugimatsu, Manabu Shimizu, Takeshi Matsuno, Atsuyoshi Manda] The possible origin and cause of the less saline shelf water detected in the Kuroshio subsurface layer around the shelf edge of the East China Sea are investigated using observational results obtained in May 1998-2001 in conjunction with a dataset archived by Japan Oceanographic Data Center and a numerical model. The observations show that subsurface intrusions of less saline water are always detected in May in layers above 24.5σθ isopycnal surface, and that salinity inversions (i.e., areas in which the less saline water lies beneath the saline water) are detected around the trough of the Kuroshio frontal eddy (or wave). Analyses of the archived dataset reveal that the isopycnal surface of 24.5σθ is the deepest layer of the Kuroshio pycnocline outcropping to the sea surface on the shallow shelf in early spring. Outcropping isopycnals above 24.5σθ encounter a less saline water plume originating from the Changjiang, especially in the western East China Sea. Thereafter, the less saline water moves along isopycnal layers and reaches the Kuroshio front around the shelf edge. Numerical models demonstrate that, when the frontal wave captures the less saline water, the shelf water takes the form of a salinity inversion in the trough because isohalines in the frontal wave have a phase lag between the upper and lower layers in consequence of the baroclinic instability. The Oceanographic Society of Japan, 2004 Kuroshio frontal eddy nationallicence Salinity inversion nationallicence East China Sea nationallicence eddy nationallicence Kuroshio frontal nationallicence Isobe Atsuhiko Department of Earth System Science and Technology, Kyushu University, Kasuga-Koen, 816-8580, Kasuga, Japan aut Fujiwara Eiji Department of Earth System Science and Technology, Kyushu University, Kasuga-Koen, 816-8580, Kasuga, Japan aut Chang Pil-Hun Department of Earth System Science and Technology, Kyushu University, Kasuga-Koen, 816-8580, Kasuga, Japan aut Sugimatsu Koichi Environmental Consultant for Ocean and Human, Kitaueno, Taito-ku, 110-0014, Tokyo, Japan aut Shimizu Manabu Kuroshio Research Laboratory, National Research Institute of Fisheries Science, Sanbashi-dori, 780-8010, Kochi, Japan aut Matsuno Takeshi Research Institute for Applied Mechanics, Kyushu University, Kasuga-Koen, 816-8580, Kasuga, Japan aut Manda Atsuyoshi Faculty of Fisheries, Nagasaki University, Bunkyo-cho, 852-8521, Nagasaki, Japan aut Journal of Oceanography Kluwer Academic Publishers 60/5(2004-10-01), 853-863 0916-8370 60:5<853 2004 60 10872 https://doi.org/10.1007/s10872-004-5778-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10872-004-5778-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Isobe Atsuhiko Department of Earth System Science and Technology, Kyushu University, Kasuga-Koen, 816-8580, Kasuga, Japan aut NATIONALLICENCE 700 1- Fujiwara Eiji Department of Earth System Science and Technology, Kyushu University, Kasuga-Koen, 816-8580, Kasuga, Japan aut NATIONALLICENCE 700 1- Chang Pil-Hun Department of Earth System Science and Technology, Kyushu University, Kasuga-Koen, 816-8580, Kasuga, Japan aut NATIONALLICENCE 700 1- Sugimatsu Koichi Environmental Consultant for Ocean and Human, Kitaueno, Taito-ku, 110-0014, Tokyo, Japan aut NATIONALLICENCE 700 1- Shimizu Manabu Kuroshio Research Laboratory, National Research Institute of Fisheries Science, Sanbashi-dori, 780-8010, Kochi, Japan aut NATIONALLICENCE 700 1- Matsuno Takeshi Research Institute for Applied Mechanics, Kyushu University, Kasuga-Koen, 816-8580, Kasuga, Japan aut NATIONALLICENCE 700 1- Manda Atsuyoshi Faculty of Fisheries, Nagasaki University, Bunkyo-cho, 852-8521, Nagasaki, Japan aut NATIONALLICENCE 773 0- Journal of Oceanography Kluwer Academic Publishers 60/5(2004-10-01), 853-863 0916-8370 60:5<853 2004 60 10872 NATIONALLICENCE 856 40 https://doi.org/10.1007/s10872-005-5778-1 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer