Otter Bowl Ch 7
Terms
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- Antarctic bottom water
- A water mass that forms in the Weddell Sea, sinks to the ocean floor, and spreads across the bottom of all oceans
- ocean thermal energy conversion (otec)
- a method for generating electricity which utilizes the temperature difference that exists between deep and shallow waters to run a heat engine
- upwelling zones
- areas of diverging rising waters
- divergence
- horizontal flow of substances away from a common center, associated with upwelling in water and descending motion in air
- isohaline
- having a uniform salinity
- isopycnal
- having a uniform density
- caballing
- mixing of two water types with identical densities but different temperatures and salinities; the resulting mixture is denser than its components
- North Atlantic Deep Water
- A deep-water mass that forms primarily at the surface of the Norwegian Sea and moves south along the floor of the North Atlantic Ocean
- halocline
- water layer with a large change in salinity with depth
- vertical circulation
- convective water movement caused by processes that increase the water's density at the surface
- downwelling zones
- areas of thermohaline circulation where water converges and sinks
- Antarctic Intermediate Water
- Antarctic zone surface water that sinks at the Antarctic convergence and flows north at a depth of about 900 m beneath the warmer upper=water mass of the South Atlantic subtropical gyre
- isothermal
- having a uniform temperature
- convergence
- situation in which substances come together, usually resulting in the sinking, or downwelling, or surface water and the rising of air
- overturn
- sinking of denser water and its replacement by less dense water from below
- freshwater lid
- freshwater meets salt water and its salinity is so low that the water does not sink but remains at the surface as a seaward moving ___
- pycnocline
- water layer with a large change in density with depth
- stable water column
- a water column whose density increases with depth
- thermocline
- water layer with a large change in temperature with depth
- continuity of flow
- water is a fixed quantity in the oceans; cannot be accumulated or removed at given locations without movement of water between locations of sinking and rising
- South Atlantic surface water
- When the North Atlantic deep water gets trapped between the Antarctic bottom and intermediate waters, it rises and splits; one part moves northward as this
- unstable water column
- a water column where there is more dense water on top of less dense water
- thermohaline circulation
- density is usually controlled by surface changes in temperature and salinity; give another name for vertical circulation