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Seafloor Features. Measuring the Depths Soundings. http://www.history.noaa.gov/stories_tales/poletobeam.html. http://www.mariner.org/exploration/index.php?type=navigationtool&id=3. http://www.photolib.noaa.gov/bigs/map00001.jpg. Echo Sounding. Echo Sounding. Transmission of Energy - Sound.
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Seafloor Features • Measuring the Depths • Soundings
http://www.history.noaa.gov/stories_tales/poletobeam.html http://www.mariner.org/exploration/index.php?type=navigationtool&id=3
Transmission of Energy - Sound • Deep scattering layer
Sound in the Sea • Seawater • 1500 m/sec • Air • 340 m/sec
SOFAR Channel • Sound Fixing and Ranging
ATOC • Acoustic Thermometry of Ocean Climate
SOSUS • SOund SUrveillance Systems
Continental Margin • Active margin • Leading margin • Pacific-type • Convergent boundary • Continental shelf is narrow and irregular
Continental Margin • Passive margin • Trailing margin • Atlantic-type • Divergent boundary • Sediment build-up on shelf
Continental Shelf Formation
Continental Rise • Atlantic, Indian, and Antarctic Oceans • Not usually found at active margins