Journal of Oceanography

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Iron, manganese and aluminum in upper waters of the western South Pacific Ocean and its adjacent seas
Journal of Oceanography - Tập 64 - Trang 233-245 - 2008
Hajime Obata, Kiminori Shitashima, Kenji Isshiki, Eiichiro Nakayama
Total dissolvable iron, manganese and aluminum distributions in upper waters were determined in the western South Pacific, Solomon Sea, Coral Sea, and Tasman Sea. In these oceanic regions, the surface aluminum distributions well reflect the atmospheric deposition pattern of mineral dust in the western South Pacific reported previously. Surface manganese distributions derive mainly from lateral tra...... hiện toàn bộ
Sudden strong current generated by an eddy in the eastern part of Wakasa Bay, Japan
Journal of Oceanography - Tập 73 - Trang 181-192 - 2016
Atsushi Kaneda, Kouta Ayukawa, Naoki Hirose, Jun Tsuzuki, Yutaka Kumaki, Tomoharu Senjyu, Yosuke Igeta, Tatsuro Watanabe
A sudden strong coastal current called a “kyucho” occurred in August 2013 in the eastern coastal waters of Wakasa Bay, Japan. This study examined its characteristics based on both observational data collected by intensive field investigations and the simulation results of a numerical model. The field investigations comprised moored buoy observations near the coast and voyages by a research vessels...... hiện toàn bộ
Effects of mass source/sink at the western boundary on the wind-driven gyres: Implications for the ventilation of the north pacific intermediate layer through convection in the Okhotsk Sea and tidal mixing at the Kuril Straits
Journal of Oceanography - Tập 66 - Trang 41-60 - 2010
Tomohiro Nakamura, Takahiro Toyoda, Yoichi Ishikawa, Toshiyuki Awaji
A steady quasi-geostrophic 2.5-layer model, forced by both Ekman pumping and a mass source/sink situated at the western boundary has been constructed to investigate the effect of diapycnal transport due to convection in the Okhotsk Sea and tidal mixing at the Kuril Straits on the intermediate layer in the North Pacific. The model illustrates a combined effect of the wind-driven and mass-driven cir...... hiện toàn bộ
A hypothesis of turbulent energy spectrum
Journal of Oceanography - Tập 26 - Trang 296-299 - 1970
Tosio Nan-Niti
Based on the experimental result, ε∝l −0.5, previously obtained, a hypothesis of turbulent energy spectrum in steady state is presented by introducing local energy supply,q. The foundamental relations areq=δε/δκ and εq=const., wherek is the wave number.
Inter-manufacturer Difference and Temperature Dependency of the Fall-Rate of T-5 Expendable Bathythermograph
Journal of Oceanography - Tập 61 - Trang 905-912 - 2005
Shoichi Kizu, Shin-Ichi Ito, Tomowo Watanabe
The fall-rate of the T-5 expendable bathythermograph (XBT) produced by Tsurumi Seiki (TSK) Co., Ltd and that by Sippican Inc., are intercompared by a series of contemporaneous and colocated measurements with conductivity-temperature-depth (CTD) profilers. It is confirmed that the fall-rates of the two manufacturers' T-5 differ by about 5 percent, despite the fact that they had been believed to be ...... hiện toàn bộ
Primary productivity in coastal water adjacent to the Kuroshio off Shimoda
Journal of Oceanography - Tập 28 - Trang 8-17 - 1972
Sooji Shimura, Shun-ei Ichimura
The primary productivity in coastal water adjacent to the Kuroshio off Shimoda was measured as part of the International Biological Program. The total amount of chlorophylla in the euphotic zone varied widely from 20 mg/m2 to 60 mg/m2 throughout the year and the maximum values were measured in early summer. These values were higher than those in the Kuroshio but agreed with those in the Oyashio. V...... hiện toàn bộ
The northward intruding eddy along the East coast of Korea
Journal of Oceanography - Tập 49 - Trang 443-458 - 1993
Yutaka Isoda, Sei-ichi Saitoh
The current structures and their seasonal variations in the East Korean Warm Current (EKWC) region, which plays a significant role in the northward transport of warm and saline waters, were described by combining the sea surface temperature (SST) data of consecutive satellite inferred (IR) images and hydrographic data. The SST patterns in winter-spring clearly showed that the small meander of ther...... hiện toàn bộ
Interannual variations in low potential vorticity water and the subtropical countercurrent in an eddy-resolving OGCM
Journal of Oceanography - Tập 68 - Trang 139-150 - 2011
Masami Nonaka, Shang-Ping Xie, Hideharu Sasaki
Interannual-to-decadal variations in the subtropical countercurrent (STCC) and low potential vorticity (PV) water and their relations in the North Pacific Ocean are investigated on the basis of a 60-year-long hindcast integration of an eddy-resolving ocean general circulation model. Although vertically coherent variations are dominant for STCC interannual variability, a correlation analysis shows ...... hiện toàn bộ
Alkylbenzenesulfonate (ABS) in the bottom muds of the inner part of Tokyo Bay
Journal of Oceanography - Tập 29 - Trang 1-7 - 1973
Yoshinari Ambe
The contents of alkylbenzenesulfonate (ABS) in the bottom sediments were analyzed for the inner part of Tokyo Bay and five inflowing rivers. Methylene blue active substances (MBAS) was extracted from the dired sample with methanol-benzene mixture. After the concentration of MBAS was determined by colorimetry, the ratio ABS/MBAS was estimated by an infrared spectrum of MBAS-MB complex. The net cont...... hiện toàn bộ
Evolution of an isolated eddy near a coast and its relevance to the “Kyucho”
Journal of Oceanography - Tập 43 - Trang 197-203 - 1987
Shin-ichiro Umatani, Toshio Yamagata
The evolution of an isolated meso-scale eddy near a coast is studied numerically. In particular, it is found that the translation speed of the adjusted eddy is estimated well by the mutual induction mechanism adapted to a rotating stratified fluid. The nonlinear Kelvin wave excited during the adjustment process is also discussed in connection with the “Kyucho”, the sudden warming of coastal waters...... hiện toàn bộ
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