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A stunning map of the Atlantic Ocean seafloor — and one woman’s pioneering quest to publish it
This underwater mountain range is now called the Mid-Atlantic Ridge, and it was one ... more startling was the central valley ...
PBS11y
Discoveries in the Deep
Marie Tharp, studying echo soundings, discovers that the Mid-Atlantic Ridge conceals a long rift valley, which turns out to be part of a hidden volcanic rent that girds the global deep.
Marie Tharp pioneered mapping the bottom of the ocean 6 decades ago – scientists are still learning about Earth’s last frontier
Sailing aboard his research vessel, the Calypso, he purposely crossed the mid-Atlantic Ridge and lowered an underwater movie ...