Magnetic Field Induced by a Submerged Inhomogenous Current

A one-way coupled approach has been developed for studying the electromagnetic field induced by a submerged inhomogenous current. The method is based upon solving the Navier-Stokes equations, transport equations for salinity and temperature, the UNESCO equation of state for seawater density and conductivity, and a steady-state Poisson equation for the magnetic-field perturbation. The computational domain includes both the ocean and the atmosphere. Simulations are conducted for a net-zero-momentum wake in a linearly stratified ocean, and the influence of depth and Brunt-V\"ais\"al\"a frequency is studied. Simulation data will quantify the magnitude and distribution of magnetic-field perturbation.