Deep Ocean Tides co-tidal map T&T pg 308. Topex M 2 tidal model.

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Presentation transcript:

Deep Ocean Tides co-tidal map T&T pg 308

Topex M 2 tidal model

Mendocino San Francisco Santa Barbara San Diego

High tide Low tide Distance along the beach slope Measure directly Horizontal distance Tidal range vertical distance Slope angle

Measure beach slope using water filled tube: Measure slope distance (hypotenuse of triangle) Measure height of water at both ends difference between short end and long end gives opposite leg of triangle Calculate angle (sine a = opp/hyp) Measure beach slope using water filled tube: Measure slope distance (hypotenuse of triangle) Measure height of water at both ends difference between short end and long end gives opposite leg of triangle Calculate angle (sine a = opp/hyp)