A graph showing the relationship of temperature and salinity with depth.

A graph showing the relationship of temperature and salinity with depth.

• A. Surface Current
• B. Transverse Current
• C. Temperature-salinity (T-S) diagram
• D. Sverdrup (sv)

Answer: (C)

Temperature and salinity profiles are used to identify water masses and how seawater properties change with depth. A Temperature-salinity diagram is the standard plot that shows how these two properties relate to each other, which helps classify different water masses across depth and after mixing. It directly represents the relationship between heat content and salt content, making it the best choice for a graph that ties temperature and salinity together. The other options describe water movement or a transport unit, not a diagram of temperature and salinity.

Temperature and salinity profiles are used to identify water masses and how seawater properties change with depth. A Temperature-salinity diagram is the standard plot that shows how these two properties relate to each other, which helps classify different water masses across depth and after mixing. It directly represents the relationship between heat content and salt content, making it the best choice for a graph that ties temperature and salinity together. The other options describe water movement or a transport unit, not a diagram of temperature and salinity.