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  1. No Access

    Article

    Long-term variability in larval recruitment rates of a callianassid shrimp population on an intertidal sandflat in an estuary-to-coastal ocean interface area in relation to river discharge and shelf water movement, western Kyushu, Japan

    Food availability is believed to affect macro-invertebrate larval survival at sea, which was poorly demonstrated. On the coast immediately outside an estuary (Ariake Sound, Kyushu, Japan), a population of the ...

    Akio Tamaki, Yu Umezawa, Yuichiro Hongo, Tetsutaro Takikawa in Journal of Oceanography (2023)

  2. Article

    Coastal ecosystem change in Asia: hypoxia, eutrophication, and nutrient conditions

    **nyu Guo, Akihiko Morimoto, Feng Zhou, Naoki Yoshie, Ario Damar… in Journal of Oceanography (2021)

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  3. No Access

    Article

    Spatiotemporal structures of tidal currents and upwelling around the Hachiri-ga-se marine hill in the southwestern Japan Sea

    Spatiotemporal structures of tidal and mean currents in August 2008 and May 2010 were estimated by shipboard ADCP data around the Hachiri-ga-se marine hill in the southwestern Japan Sea. The time variations of...

    Tetsutaro Takikawa, Toshimitsu Goto, Akira Hamano… in Journal of Oceanography (2021)

  4. No Access

    Article

    Presence of high nitrate to phosphate ratio subsurface water in the Tsushima Strait during summer

    To identify water with an excess nitrate concentration to phosphate ratio and its potential source, the nutrient concentrations in the Tsushima Strait (TSS) were investigated over ten cruises in August and Sep...

    Taketoshi Kodama, Akihiko Morimoto, Tetsutaro Takikawa… in Journal of Oceanography (2017)

  5. No Access

    Article

    Subsurface nutrient maximum and submesoscale structures in the southwestern Japan Sea

    From summer to autumn, in the southwestern Japan Sea, the maximum subsurface nutrient (DIN: nitrate + nitrite) concentration and minimum dissolved oxygen (DO) concentration layers lie at depths of approximatel...

    Tetsutaro Takikawa, Akihiko Morimoto, Goh Onitsuka in Journal of Oceanography (2016)

  6. No Access

    Article

    Spatial and Temporal Variation of a Cyclonic Eddy Detected Downstream of the Tsushima Islands in November 2007

    Horizontal, vertical and temporal distribution of a cyclonic (counterclockwise) eddy, where biological productivity is high, downstream of the Tsushima Islands in the eastern channel of the Tsushima Straits in...

    Tetsutaro Takikawa, Goh Onitsuka, Ken-ichi Fukudome, Jong-Hwan Yoon… in Estuaries and Coasts (2011)

  7. No Access

    Article

    Seasonal volume transport variation in the Tsushima Warm Current through the Tsushima Straits from 10 years of ADCP observations

    The seasonal variation in the structure and volume transport of the Tsushima Warm Current through the Tsushima Straits is studied using the acoustic Doppler current profiler (ADCP) data obtained by the ferryboat

    Ken-Ichi Fukudome, Jong-Hwan Yoon, Alexander Ostrovskii… in Journal of Oceanography (2010)

  8. No Access

    Article

    Modeling of the branches of the Tsushima Warm Current in the Eastern Japan Sea

    The branches of the Tsushima Warm Current (TWC) are realistically reproduced using a three-dimensional ocean general circulation model (OGCM). Simulated structures of the First Branch and the Second Branch of ...

    Hideyuki Kawamura, Toshimichi Ito, Naoki Hirose… in Journal of Oceanography (2009)

  9. No Access

    Article

    Seasonal variation of horizontal material transport through the eastern channel of the Tsushima Straits

    We conducted hydrographic observations ten times in the Tsushima Strait to reveal seasonal variations of horizontal material transports such as of heat, freshwater, chlorophyll a, and dissolved inorganic nitrogen...

    Akihiko Morimoto, Tetsutaro Takikawa, Goh Onitsuka… in Journal of Oceanography (2009)

  10. No Access

    Article

    Characteristics of water mass under the surface mixed layer in Tsushima Straits and the southwestern Japan Sea in autumn

    Two different cold waters were found under the surface mixed layer in Tsushima Straits and the southwestern Japan Sea in autumn 2004. One is cold saline water with a low concentration of dissolved oxygen, and ...

    Tetsutaro Takikawa, Akihiko Morimoto, Goh Onitsuka… in Journal of Oceanography (2008)

  11. No Access

    Article

    Volume Transport through the Tsushima Straits Estimated from Sea Level Difference

    The relations between the volume transport and the sea level difference across the Tsushima Straits have been investigated using current data provided by ADCP mounted on the ferry Camellia, plying between Hakata ...

    Tetsutaro Takikawa, Jong-Hwan Yoon in Journal of Oceanography (2005)

  12. No Access

    Article

    Tidal Currents in the Tsushima Straits Estimated from ADCP Data by Ferryboat

    Tidal currents in the Tsushima Straits have been analyzed using measurements obtained since February 1997 by an acoustic Doppler current profiler (ADCP) mounted on the ferryboat Camellia. Tidal current constituen...

    Tetsutaro Takikawa, Jono-Hwan Yoon, Kyu-Dae Cho in Journal of Oceanography (2003)