The Ocean Floor

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The Ocean Floor
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Mapping the Ocean Floor

• Past sailors would drop a weight with a line
  attached to it.
• Present
• Echo (Sonar) is used to measure the depth of the
  ocean, this technique has been in use for 60
  years
• LABS (Laser Airborne Bathymetric System) uses
  lasers from the air to take pictures of the ocean
  floor

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How does sonar work
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Continental Shelves
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Continental Slopes
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Turbidity Currents
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Canyons
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Continental Rises
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Abyssal Plains Abyssal Hill
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Seamounts
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Guyots
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Coral Atolls
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Trenches
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Mid-Ocean Ridges
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Fracture Zones
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Progression of a Rift Valley
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Review