More mysteries of the deep have been solved, thanks to the highest resolution map yet of the ocean floor.
The study, published Thursday in Science, made two big discoveries: a range in the South Atlantic nearly 500 miles long, and a ridge in the Gulf of Mexico as wide as Texas. David Sandwell, geophysics professor at Scripps Institute of Oceanography at UC San Diego, led the study. So little is known about the deep-sea floor that it's almost like a completely different planet that was only recently explored for the first time, he told the Times. "We have maps of Mars that have 100 to 10,000 times more resolution than maps of the deep ocean."
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The map was created by using data collected by the European Space Agency's CryoSat-2 and Jason-1, operated by NASA and CNES, the French space agency. The spacecraft have instruments able to measure topography of the ocean surface within a fraction of an inch. Ships are capable of carrying instruments that could get better images, but such a survey would cost too much, requiring 10 ships in order for the survey to be done in a decade.
Sandwell admits the resolution of the map "is still pretty terrible," but he's pleased with the image. "It's better than what we had before."
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