Hogg Nelson G.

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Hogg
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Nelson G.
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Subject: Charles Gibbs Fracture Zone × Subject: Ocean currents × Start date: 1979 × End date: 1979 × Has files: Yes ×

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Technical Report

Observations of energetic low frequency current fluctuations in the Charlie-Gibbs fracture zone

1979-02 , Schmitz, William J. , Hogg, Nelson G.

Relatively energetic low frequency fluctuations in horizontal currents are found to exist below the thermocline in the northern trough of the Charlie-Gibbs Fracture Zone. For example, deep eddy kinetic energy levels there are about twice as large as those observed at similar relative depths in the MODE-I region. Eddy kinetic energies are about 2-10 times larger than mean kinetic energies. The vertical distribution of eddy kinetic energy is frequency dependent, increasing toward the thermocline for the longer time scales and intensifying toward the bottom at higher frequencies. In addition to the expected mean westward motion of Norwegian Sea Overflow Water through the northern trough of the fracture, rather consistent mean southward flow is observed at a depth immediately above the overflow.

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