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Heezen collected sonar data from ships that crossed ... cartographers of the 20th century. Marie Tharp’s maps of the Atlantic ...
Next she’d read the depth at each location off the sonar ... ocean floor’s topography and create a physiographic map. Tharp’s careful plotting of six east-to-west profiles across the North ...
A new satellite-based study shows it's possible to protect 30% of Atlantic Ocean habitats with minimal disruption to shipping ...