Gravity map | oceanography | Britannica (original) (raw)

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survey of ocean basin

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  In ocean basin: Exploration of the ocean basins
  The resulting gravity map provides comprehensive coverage of the ocean surface on a 5′-by-5′ grid that depicts five nautical miles on each side at the Equator). Coverage as complete as this is not available from echo soundings made from ships. Because the gravity field at the ocean…
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