GEOL 1120 Lecture Notes - Lecture 12: Arctic Ocean, Bathymetry, High Island
12 Nov 2018
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Document Summary
Monitoring the global oceans requires a global network of instruments. 96. 5% of seawater is h2o and the rest is mostly salts. Salinity is often expressed in units of per mil (g salt/kg seawater), and is on average 35% in seawater. Salinity (per mil) = (cid:3046)(cid:3039)(cid:3047) (cid:3038) (cid:3046)(cid:3047)(cid:3045) You just returned from an ocean expedition and brought back a sample of seawater with an unknown salinity. Your seawater sample is 5000 grams (~1. 3 gallons). You evaporate all the seawater and find that your sample contains 173 grams of salt. From the same expedition, you also brought back a 2 kg sample of seawater that has a salinity of 34. 2 . For an experiment, you need to create a mock seawater solution using salt and water. Salinity varies with latitude due to variations in precipitation and evaporation. Highest ocean salinity is between 20-30o north and south or the equator, because evaporation exceeds precipitation.
