MJO can induce low frequency oscillation (Kelvin Waves) in the ocean. And these oscillation can propagate eastward. Many features of low frequency (30-60 days) have been found along the western coastal of North and South American. However, comparing to the upper ocean signals, few have been found in the deep ocean. As I am aware, there is only one paper (Matthews et al., 2007) which shows such an oscillation can penetrate downward to a depth of 1500m.
Due to the presence of the East Pacific Rise, if this downward propagating Kelvin wave can reach it, part of the energy will be trapped and propagate along the ridge. This along-ridge propagating waves could be very important for the material transport in a certain time scale (30-60days). Also, these waves could interact with the topography to either generate lee waves or induce overflow, both of which could result in some temporal signals in the mixing events.
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