OCS 1005 Lecture : Lecture 10 Notes
15 Mar 2019
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Document Summary
Physical property of sea water salinity the total mass of dissolved inorganic solids (in grams) in 1kg of seawater typical sea water salinity = 35g/1kg or 35 parts per thousand salinity = salt/water. Temperature, density, salinity in oceans average ocean water temp 4c: deep depth temp same everywhere thermocline, where temp changes rapidly, halocline, where salinity changes rapidly, pycnocline, where density changes rapidly. Ocean stratification: 3 density zones surface zone, upper layer, containing least dense water, 2% of total ocean volume, pycnocline zone in which density increases with depth, %18% of ocean, deep zone little change in density, 80% of ocean. Heating and cooling of earth: heating comes from solar radiation cooling due to back radiation from earth to space, thermal equilibrium for earth incoming solar radiation = back radiation. Emission spectrum of sun and earth: depends on surface temp. Earth"s axis tilted at 23. 5o seasons are caused by variations in the amount of incoming solar radiation.
