Less than one-quarter of Earth's entire ocean floor has been mapped, leaving gaping holes in our understanding of the underwater realm.
of Earth's entire ocean floor has been mapped, leaving gaping holes in our understanding of the underwater realm.
Led by earth scientist Julie Gevorgian of the Scripps Institution of Oceanography in California, a team of scientists has just discovered more than 19,000 new seamounts using a new batch of satellite data. Created by volcanic activity deep beneath the ocean's surface, seamounts can rise to around 3 to 10 kilometers high. They tend to be easily detectable by sonar, but only if a ship happens to pass over them.
In the past decade or so, scientists have turned to satellite data to detect small bumps in the ocean surface and map where seamounts lie.that ricochet off the seafloor to map its features, satellite altimetry does so indirectly, measuring slight changes in sea surface height that reflect the tug of gravity coming from mounds in Earth's submerged crust. The larger the mound, the more its gravitational pull draws in seawater on top.
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