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Lowering of a core oceanographic instrument into the ocean is being done here, during the Scripps Institution of Oceanography Capricorn Expedition (1952-1953). Scientists studied the 35,400 foot deep Tonga Trench, the second deepest place in the ocean, and measured heat flow on the East Pacific Rise during this expedition. 1952.

Lowering of a core oceanographic instrument into the ocean is being done here, during the Scripps Institution of Oceanogra...