Seafloor features1

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Seafloor features1

  1. 1. Oceanography<br />The scientific study of the oceans and oceanic phenomena.<br />
  2. 2. Bathymetry<br />The measurement of ocean depths and the charting of the shape or topography of the ocean floor.<br />
  3. 3. Submersible<br />A small underwater craft used for deep sea research.<br />
  4. 4. Sonar<br />An electric depth-sounding mechanism; sonar calculates ocean depth.<br />
  5. 5. Continental Margin<br />That portion of the seafloor adjacent to the continents.<br />
  6. 6. Continental Shelf<br />The gently sloping submerged portion of the continental margin, extending from the shoreline to the continental slope.<br />
  7. 7. Continental Slope<br />The steep gradient that leads to the deep-ocean floor and marks the seaward edge of the continental shelf.<br />
  8. 8. Submarine Canyon<br />A seaward extension of a valley that was cut on the continental shelf during a time when the sea level was lower.<br />
  9. 9. Turbidity Current<br />A downslope movement of dense, sediment- laden water created when sand and mud on the continental shelf and slope are dislodged and thrown into suspension.<br />
  10. 10. Continental Rise<br />The gently sloping surface at the base of the continental slope.<br />
  11. 11. Ocean basin floor<br />Area of the deep-ocean floor between the continental margin and the oceanic.<br />
  12. 12. Abyssal plains<br />Very level area of the deep-ocean floor, usually lying at the foot of the continental.<br />
  13. 13. Seamount<br />An isolated volcanic peak that rises at least 1000 meters above the deep-ocean floor.<br />
  14. 14. Mid-ocean Ridge<br />A continued elevated zone on the floor of all the major ocean basins and varying in width from 1000 to 4000 kilometers.<br />
  15. 15. Seafloor Spreading<br />The process by which plate tectonics produces new oceanic lithosphere at ocean ridges.<br />

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