Arctic Mechanical Energy Budget.
Mechanical energy balance equations have been written for the various layers important to the transfer of energy from the atmosphere into an ice covered ocean. These equations are coupled by the transfer of energy from one into another. This coupling is presented graphically in the form of a mechani...
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| Format: | Text |
| Language: | English |
| Published: |
1980
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| Online Access: | http://www.dtic.mil/docs/citations/ADA103180 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA103180 |
| Summary: | Mechanical energy balance equations have been written for the various layers important to the transfer of energy from the atmosphere into an ice covered ocean. These equations are coupled by the transfer of energy from one into another. This coupling is presented graphically in the form of a mechanical energy flow chart. The magnitudes of the transfer terms have been estimated and presented in flow chart form for a variety of Arctic conditions. The presence of a sea ice cover has been shown to have a profound effect on the flow of mechanical energy into the Artic Ocean. In both summer and winter the energy available to drive currents is severely restricted. Instead, this energy goes into deforming the ice pack. Most of the deformation is concentrated in a Shear Zone. The levels of power being dissipated have been estimated. The interaction of waves with ice has also been considered. The presence of ice provides an important means of dissipating wave energy by wave breaking. Long period swells generated in the open ocean dissipate their energy quickly at the ice margin. The levels of power transfer indicate that this may be an important noise generation region. (Author) |
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