How does the ocean's surface salinity change when sea ice forms? ...

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How does the ocean's surface salinity change when sea ice forms? How does this change influence density?
 
  What will be an ideal response?

Question 2

Why is deep-ocean circulation referred to as thermohaline circulation?
 
  What will be an ideal response?

[Bsand8]

Answer to Question 1

When seawater freezes to form sea ice, salts do not become part of the ice; therefore, the salinity of the remaining seawater increases. An increase in salinity results in an increase in density.

Answer to Question 2

Deep-ocean circulation is driven by density differences in the water column, where denser water sinks to the bottom. The density differences are due to temperature and salinity; temperature is referenced by thermo and salinity by halinehence thermohaline circulation.

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TYSM

[vickybb89]

Thanks for the timely response, appreciate it