1. What is an estuary? Estuaries Coastal lagoons
Semi-enclosed coastal body of water
free communication with ocean
ocean salinity is measurably diluted by runoff

2. Types of Estuaries According to Their Origin
(Pinet, 2003)
Types of Estuaries According to Their Origin

3. (Pinet, 2003)

4. (Pinet, 2003)

5. San Francisco Bay
(Pinet, 2003)

6. Typical Estuarine Circulation

7. Types of Estuaries According to Their Stratification
(Pinet, 2003)
Competition between
tidal forcing and buoyancy forcing

8. Typical circulation in a fjord
Typical profile of net velocity
mouth
head
Typical profile of salinity (density)
depth

9. (Pinet, 2003)

10. Rio de la Plata Estuary
Argentina

11. Example of fjord head mouth
Here we see the upper 20 m, where the action takes place, illustrating a very thin buoyant layer (3 m thick) of fresh and cold water
This layer is well contained west of the sill
Heavy water is blocked by the sill

12. (Pinet, 2003)

13. S Axial Distributions Chesapeake Bay T Spring of 1999 t
The mouth of the bay is on the right S
Axial Distributions
Chesapeake Bay T
Spring of 1999 t

14. (Pinet, 2003)

15. Example of Well-Mixed Estuary

16. Types of Estuaries According to their water balance
Net Mass Loss
No Mass Loss

17. Inverse Estuary Normal Estuary Looking into lagoon
Red = Water going out
Blue = Water going in
Inverse Estuary
Normal Estuary

18. Salt-plug estuary
ER
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