Oceanography Lab. Water Masses & How We Study Them. Water Mass. A large volume of water that can be identified as having common origin or source area They sink based on their density Retain their original Temperature Salinity Oxygen (some times). Thermohaline Circulation.
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Water Masses &
How We Study Them
Water with a salinity of 32‰ (parts per thousand) at a temperature of 10°C has a σt of 24.64 or a density of 1.02464
Every point is this line, called the isopycnal, has a density of 24.00
So if you know the water temperature and salinity you can determine the σt of a water mass
What is the σt of a water mass at 2°C with a salinity of 30 ‰?