Tides Flashcards

0
Q

What is tidal information used for?

A
Hydrographic surveying (to reduce soundings)
Navigators (safely navigate shallow waters 
Engineers (coastal work construction) 
The public (fishing, sailing etc)
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1
Q

What is the definition of a tide?

A

The periodic vertical movement of the oceans on the earths surface

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2
Q

Name 3 causes of tides

A

Centrifugal force creating a tidal bulge
Coriolis effect
Circulation of ocean gyres

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3
Q

Name 2 meteorological effects on the tides

A

Strong/prolonged winds

Unusually high/low barometric pressure (atmospheric)

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4
Q

What is dynamic theory of the tides?

A

Represents tide as a wave forced by tide producing forces. Rise and fall on coast results from convergence or divergence.

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5
Q

What 4 considerations of dynamic theory are there?

A

Presence of landmass
Effect of shallow water
Rotation of the earth
Time lag In ocean response to ride raising forces

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