What type of estuary has little vertical mixing?
a. Fjord estuaries
b. Bar-built estuaries
c. Tectonic estuaries
d. Drowned river mouth estuaries
ANS: A
Fjords are very steep troughs shaped by glaciers. There is a sill of glacier deposits that allows bottom
waters to become stagnant. Information can be found in the section Fresh Water Meets the Ocean in
Estuaries.
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