Skip to main content

and
  1. Article

    Open Access

    Diel vertical migration promotes zooplankton horizontal patchiness

    Spatial patchiness of plankton enhances fishery production and carbon export in the ocean. While diel vertical migration (DVM) has been identified as an important factor contributing to vertical patchiness, it...

    Bingzhang Chen, Eiji Masunaga, Sherwood Lan Smith in Journal of Oceanography (2021)

  2. Article

    Open Access

    Micro-scale patchiness enhances trophic transfer efficiency and potential plankton biodiversity

    Rather than spatial means of biomass, observed overlap in the intermittent spatial distributions of aquatic predators and prey is known to be more important for determining the flow of nutrients and energy up ...

    Anupam Priyadarshi, S. Lan Smith, Sandip Mandal, Mamoru Tanaka in Scientific Reports (2019)

  3. Article

    Open Access

    Turbulence mediates marine aggregate formation and destruction in the upper ocean

    Marine aggregates formed through particle coagulation, large ones (>0.05 cm) also called marine snow, make a significant contribution to the global carbon flux by sinking from the euphotic zone, impacting the ...

    Marika Takeuchi, Mark J. Doubell, George A. Jackson, Misuzu Yukawa in Scientific Reports (2019)

  4. No Access

    Article

    A three-dimensional numerical study of river plume mixing processes in Otsuchi Bay, Japan

    The three-dimensional numerical model SUNTANS is applied to investigate river plume mixing in Otsuchi Bay, an estuary located along the Sanriku Coast of Iwate, Japan. Results from numerical simulations with di...

    Kaushik Sasmal, Eiji Masunaga, Adrean Webb, Oliver B. Fringer in Journal of Oceanography (2018)

  5. No Access

    Chapter

    Key Questions and Recent Research Advances on Harmful Algal Blooms in Stratified Systems

    This chapter synthesizes progress achieved in the understanding of the dynamics of harmful algal blooms (HABs) under the auspices of the GEOHAB Core Research Project HABs in Stratified Systems. A variety of aq...

    Robin Raine, Elisa Berdalet in Global Ecology and Oceanography of Harmful… (2018)

  6. No Access

    Article

    An observational and numerical study of river plume dynamics in Otsuchi Bay, Japan

    A newly developed tow-yo profiler (YODA Profiler) and a fully nonhydrostatic numerical model, SUNTANS, are used in this study to investigate river plume mixing in Otsuchi Bay, a ria estuary located in Iwate, J...

    Eiji Masunaga, Oliver B. Fringer, Hidekatsu Yamazaki in Journal of Oceanography (2016)

  7. No Access

    Article

    Hypolimnetic turbulence generation associated with superposition of large-scale internal waves in a strongly stratified lake: Lake Biwa, Japan

    A 48-h microstructure experiment captured the variation of turbulence in Lake Biwa, Japan, during a strong stratification period, 1 week after a typhoon event. A free-fall microstructure profiler (TurboMAP) an...

    Guillaume Auger, Hidekatsu Yamazaki, Takeyoshi Nagai, Chunmeng Jiao in Limnology (2013)

  8. No Access

    Article

    Multilayer biological structure and mixing in the upper water column of Lake Biwa during summer 2008

    We carried out a 24-h station experiment at Lake Biwa (Japan) to measure mixing events and concurrent biological signals using a free-fall microstructure profiler (TurboMAP-L), conventional hydrographic measur...

    Hidekatsu Yamazaki, Hikaru Honma, Takeyoshi Nagai, Mark J. Doubell in Limnology (2010)

  9. No Access

    Article

    Oceanic Velocity Microstructure Measurements in the 20th Century

    The science of ocean turbulence was started more than 50 years ago by a small research group using a surplus mine-swee** paravane to measure the velocity and temperature fluctuations in the ocean. The field ...

    Rolf G. Lueck, Fabian Wolk, Hidekatsu Yamazaki in Journal of Oceanography (2002)

  10. No Access

    Article

    Observations of a Kelvin-Helmholtz Billow in the Ocean

    We identified a Kelvin-Helmholtz billow from vertical turbulence velocity and instantaneous heat flux signals obtained from airfoil shear probes and thermistors mounted on a research submarine. The vertical tu...

    Hua Li, Hidekatsu Yamazaki in Journal of Oceanography (2001)

  11. No Access

    Chapter

    An Application of Turbulence Data to the California Undercurrent

    Persistent and large rates of the dissipation of kinetic energy were observed in the intrusive region of the California Undercurrent. Viscous dissipation can extract the total mechanical energy (potential plus...

    Rolf Lueck, Hidekatsu Yamazaki in Poleward Flows Along Eastern Ocean Boundaries (1989)

  12. No Access

    Chapter

    Review of Oceanic Turbulence: Implications for Biodynamics

    This review focuses on the nature of oceanic turbulence. It describes some of the existing ideas and measurements to bring attention to the possible effects of turbulence on biodynamics. Much of the turbulence...

    Hidekatsu Yamazaki, Thomas R. Osborn in Toward a Theory on Biological-Physical Int… (1988)