• (Problem 5-5 from Cushman-Roisin) You are working for a
company that plans to deposit high-level radioactive wastes on the
bottom of the ocean, at a depth of 3000 m. This site (lat=33N) is
known to be at the center of a permanent counterclockwise vortex.
Locally, the vortex flow can be assimilated to a solid-body
rotation with angular speed equals to 10−5 1/s. Assuming a
homogeneous ocean and a steady, geostrophic flow, estimate the
upwelling rate at the vortex center. How many years will it take
for the radiactive waste to arrive at the surface? Take f = 8 x
10−5 1/s and ν = 10−2 m2/s.