Bathymetry of the Sea Floor

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Presentation transcript:

Bathymetry of the Sea Floor “Mapping the Ocean Floor How and Why”

Purposes for Bathymetry Determine the bottom depth and contour these depths for bottom analysis Determine topographic features by looking from the top down and bottom geomorphology Detail physical factors including water current, sediment transport, slope and areas for layering, etc… Use values for comparisons of changing bottom features and movement of sediments

Technologies have evolved to more accurately survey the ocean floor http://www.earthguide.ucsd.edu/earthguide/diagrams/sonar/sonar.html

Using echo sounding to determine depth Measuring water depth: Echosounding Test your knowledge If a sound pulse takes 2 seconds to travel to the seafloor and return to the ship, what is the depth to the seafloor? (Use 1500 m/sec as the speed of sound).

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Lake Michigan Bathymetric Map showing contour intervals