1. Ocean Circulation based on Density: Temperature and Salinity
The Layered Ocean
Ocean Circulation based on Density: Temperature and Salinity

2. Layering Oceans The top 100 meters is considered well-mixed
Density increases with depth down to approximately 1000 meters
Below 1000 meters, the ocean is considered homogenous

5. Water Masses
Common water masses in the world ocean are: Antarctic Bottom Water (AABW), North Atlantic Deep Water (NADW), Circumpolar Deep Water (CDW), Antarctic Intermediate Water (AAIW), Subantarctic Mode Water (SAMW), Arctic Intermediate Water (AIW), the central waters of various oceanic basins, and various surface waters.