Term
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Definition
Driven by density contrasts
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Term
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Definition
| Adjustment to density stratification; Circulation is slow |
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Term
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Definition
Parts of ocean identifiable by T and S (density)
- Do not mix easily
- Flow over and under each other
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Term
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Definition
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Term
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Definition
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Term
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Definition
| In between intermediate water but not in contact with seafloor |
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Term
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Definition
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Term
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Definition
- Weddell Sea
- Norweigan Sea
- Ross Sea
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Term
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Definition
| Off Antarctic; where cold water gets salty |
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Term
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Definition
| Where salty water gets cold |
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Term
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Definition
| Antarctic-Convergence Zone |
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Term
| Deep Water Mass Formation |
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Definition
- weak thermocline i.e. Not temperature stratified
- No barrier to deep mixing
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Term
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Definition
- Earth's densest water mass
- forms during winter in Weddell Sea
- Antarctic ice shelf
- Sea ice forms it excludes salt, making cold water saltier and sink
- flows northward
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Term
| North Atlantic Deep Water |
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Definition
- forms from surface water transported to the North Atlantic by the Gulf Stream (warm and salty)
- Enters Norwegian/Greenland Sea
- Cools and sinks
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Term
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Definition
•Form in regions where temperature and salinity are not as extreme (40-55oS)
•Form in N. Atlantic and Antarctic subpolar regions
–North Atlantic Intermediate Water
–Antarctic Intermediate Water
•Forms by wind-driven current convergence
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Term
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Definition
- rapid in a few limited areas
- must be balanced by rising waters
- rise more gradual and difuse throughout oceans
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