Events

This BCCR Monday Seminar will be given by Yasushi Fujiwara from Kobe University.  He will present his work on " Wave-driven ocean currents: how ocean responds to Stokes transport". Abstract

Stokes drift associated with surface waves induces mass transport that interacts with ocean currents. Its effects can be represented in governing equations as external forcings such as Coriolis-Stokes and vortex forces. While pointwise current responses (anti-Stokes Eulerian current) have long been studied, nonlocal responses to spatially varying waves remain less understood. Here, using linearized wave-averaged theory, we show that inhomogeneous Stokes transport induces horizontal convergence/divergence, driving nonlocal geostrophic responses via effective Ekman pumping. Idealized simulations reveal dipole circulation around localized Stokes forcing, and over sloping topography, transient forcing excites topographic Rossby waves that irreversibly modify geostrophic currents. A simulation with realistic topography and wave forcing shows Lagrangian transport of O(1) m^2/s persisting for days after a cyclone.

About the speaker

Yasushi Fujiwara is an Assistant Professor at Kobe University, Japan. He received his Ph.D. in Physical Oceanography from Kyoto University, Japan. His research focuses on small-scale processes in the oceanic boundary layer, particularly wave–current interactions, surface wave dynamics, wind–wave coupling, and their representation in numerical models. He primarily investigates these problems using numerical approaches, notably through a wave-phase-resolved model that explicitly simulates the interaction between turbulence and wave motions.

Hi everyone, 

We are excited to invite you to an exciting workshop on The Lofoten Basin Eddy in a Regional Context: from Physics to Ecosystem Dynamics. The workshop aims to promote the discussion on state-of-the-art research, identify key priorities, and coordinate collaborative efforts to advance our understanding of the dynamics and biogeochemistry of the LBE, and its significance for the regional ecosystems. The event will feature speakers representing initiatives such as NorSWOT, NorGlider, and the PROVOLO project. The complete agenda will follow. 

When: Wednesday, September 24, 11:30-16:00 

Where: BCCR Lecture room, 4th floor

The program is coming soon!