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2. Ocean dynamics - Wikipedia

   en.wikipedia.org/wiki/Ocean_dynamics

   The deep ocean is both cold and dark with generally weak velocities (although limited areas of the deep ocean are known to have significant recirculations). The deep ocean is supplied with water from the upper ocean in only a few limited geographical regions: the subpolar North Atlantic and several sinking regions around the Antarctic. Because ...

3. Ocean stratification - Wikipedia

   en.wikipedia.org/wiki/Ocean_stratification

   The increased warming in the upper ocean reduces the density of the upper ≈500 m of water, while deeper water does not experience as much warming and as great a decrease in density. Thus, the stratification in the upper layers will change more than in the lower layers, and these strengthening vertical density gradients act as barriers ...

4. Overflow (oceanography) - Wikipedia

   en.wikipedia.org/wiki/Overflow_(oceanography)

   This process is significant in thermohaline circulation, contributing to the global ocean's deep water mass formation. [1] Overflows influence global climate by transporting heat and salt, impacting sea levels, and affecting marine ecosystems. Overflows are driven by differences in water density, usually due to variations in temperature and ...

5. Stratification (water) - Wikipedia

   en.wikipedia.org/wiki/Stratification_(water)

   The driving force in stratification is gravity, which sorts adjacent arbitrary volumes of water by local density, operating on them by buoyancy and weight.A volume of water of lower density than the surroundings will have a resultant buoyant force lifting it upwards, and a volume with higher density will be pulled down by the weight which will be greater than the resultant buoyant forces ...

6. Pycnocline - Wikipedia

   en.wikipedia.org/wiki/Pycnocline

   The permanent thermocline coincides with a change in water density between the warmer, low-density surface waters and the underlying cold dense bottom waters. The region of rapid density change is known as the pycnocline, and it acts as a barrier to vertical water circulation; thus it also affects the vertical distribution of certain chemicals ...

7. Physical oceanography - Wikipedia

   en.wikipedia.org/wiki/Physical_oceanography

   WOA surface density. Because the vast majority of the world ocean's volume is deep water, the mean temperature of seawater is low; roughly 75% of the ocean's volume has a temperature from 0° – 5 °C (Pinet 1996). The same percentage falls in a salinity range between 34 and 35 ppt (3.4–3.5%) (Pinet 1996).

8. Temperature–salinity diagram - Wikipedia

   en.wikipedia.org/wiki/Temperature–salinity_diagram

   T-S diagram of a station in the North Pacific. In oceanography, temperature-salinity diagrams, sometimes called T-S diagrams, are used to identify water masses.In a T-S diagram, rather than plotting each water property as a separate "profile," with pressure or depth as the vertical coordinate, potential temperature (on the vertical axis) is plotted versus salinity (on the horizontal axis).

9. General Bathymetric Chart of the Oceans - Wikipedia

   en.wikipedia.org/wiki/General_Bathymetric_Chart...

   GEBCO is the only intergovernmental body with a mandate to map the whole ocean floor. At the beginning of the project, only 6 per cent of the world's ocean bottom had been surveyed to today's standards; as of June 2022, the project had recorded 23.4 per cent mapped. About 14,500,000 square kilometres (5,600,000 sq mi) of new bathymetric data ...