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Kelvin wave: Quiz

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Question 1: A Kelvin wave is a wave in the ocean or atmosphere that balances the Earth's ________ against a topographic boundary such as a coastline, or a waveguide such as the equator.
Coriolis effectOcean gyreThermohaline circulationGulf Stream

Question 2: When the motion at the equator is to the east, any deviation toward the north is brought back toward the equator because the ________ acts to the right of the direction of motion in the Northern Hemisphere, and any deviation to the south is brought back toward the equator because the Coriolis force acts to the left of the direction of motion in the Southern Hemisphere.
Gulf StreamThermohaline circulationOcean gyreCoriolis effect

Question 3: A feature of a Kelvin wave is that it is non-dispersive, i.e., the phase speed of the wave crests is equal to the ________ of the wave energy for all frequencies.
Group velocityMomentumMatter wavePhase velocity

Question 4: [1] The (linearised) ________ then become the following:
Primitive equationsForceGlobal climate modelFluid dynamics







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