Drake Passage

Reconstruction of the circulation in Drake Passage during the December 2003.

Colloborators:

M.Koshlyakov, R.Tarakanov, E.Morozov, A.Scherbina, M.Ikeda The *.pdf file can be douwloaded here

Data:

1. Hydrophysical T/S measurements. 2. Ship Mounted ADCP measurements. (SM ADCP). 3. Lowered ADCP (LADCP). 4. Topes/Poseidon altimetry. 5. Meteorological data.

Model has been configured In rectangular domain along the section line (Figure 1).

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Figure 1. Bottom topography in the Drake Passage. Solid line - modeling domain. Croses - locations of CTD measurements in December 2003.

Preliminary results.

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Figure 2. Optimized normal to the section velocity. Eastward currents are shown by gray.

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Figure 3. Optimized horizontal velocities at different leves.

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Figure 4. Optimized temperature distribution at different leves.

Summary:

1. Splitting of the Circumpolar current. 2. High bottom velocities. 3. Westward counter-current along the Antarctic Slope. 4. Westward deep counter-current. 5. Total transport 122 Sv.

The results was published in Oceanologiya. (in Russian)

The results was published in Oceanologiya. (in Russian)

The *.pdf file can be douwloaded here