EAS212 Lecture 6: notes_lecture06
4 Apr 2016
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Quick review: pure water density variation with temperature. Video: https://www. youtube. com/watch?v=uukrgqzk-ke: seawater varies with temperature, salinity, and pressure, as you temperature, salinity and pressure, you density, we are not very interested in variations of density with pressure, so we use potential density anomaly. (s, , 0) = (s, , 0) 1000 kg m-3. Quick review: the mixed layer can vary in depth: winds, stability. A body of water with a specific set of characteristics/properties (temperature, salinity, oxygen and/or nutrients) identified by plotting. Against s: usually, these properties are imprinted by processes at the surface (mixed layer) in specific locations, and are mostly conserved (especially t and s) after the water mass sinks. In the interior, the properties will only change by mixing with other waters. They have capitalized names which usually identify where they were formed and which position in the water column they occupy (intermediate, deep, bottom: example: antarctic bottom water.
