MSCI B210 Chapter Notes - Chapter 6-7: Pycnocline, Volumetric Heat Capacity, Mixed Layer
13 Jan 2020
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Ch 6 notes: water is a polar molecule, one end is positively charged; one end is negatively charged hydrogen bond. Heat capacity (specific heat: heat required to raise 1 gram of compound by 1 c, water has a high heat capacity, small changes in water temperature release or absorb relatively large amounts of heat, due to hydrogen bonding. Thermostatic properties: therme- " heat, stasis- "standing still, act to moderate changes in temperature by thermal inertia. Ocean"s 3 density zones: the surface zone or mixed layer, the pycnocline- an area of rapidly changing density, the deep zone- 80% of the water in the ocean is below the pycnocline, pycnocline = thermocline (largely) Sound in the ocean: sound travels better at the surface, sofar layer @ 1000 m + sound travels further (but slowly) Source of ocean"s salt: seawater is not concentrated river water, na+ from weathering of crustal rocks, cl- from volcanic vents and outgassing, excess volatiles from upper mantle.
