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The annual cycle of salinity on the Cape Fairfield line is shown here: with the coast on the left, the bottom extends to about 190 m, the line goes offshore about 50 km. In late winter we have a very steep bottom attached front near to the shore with a small salinity gradient across it. In summer the snowmelt and precipitation gives us a very shallow and wide front, this being the time of year that we see both the minimum salinity at the surface and the maximum salinity at the bottom. Finally, by December we have had fall storms that mix this fresh water down, bring it back to the coast, and form the distinct bottom-trapped wedge of fresh water adjacent to the coast.

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