Atmosphere Ocean Science Student Seminar

Lee waves for non-periodic topography

Speaker: Cai Maitland-Davies, CAOS

Location: Warren Weaver Hall 1314

Date: Friday, November 18, 2022, 4 p.m.

Synopsis:

Mixing caused by internal waves is thought to close the ocean's meridional overturning circulation, and observations show that this is strongest above rough topography. Lee waves in particular are internal waves generated by a steady flow over topography, and are usually calculated using Fourier transforms, which assumes periodicity. Given the ocean's finite depth, there is a possibility for them to reflect downwards at the ocean's surface, which means that calculations using an 'isolated' region of topography can feel the effects of the same topography further upstream. I will talk about using Green's functions as a way to get around this, making the topography truly isolated.