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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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MessySUBS.LHA
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Deep-Sea_Drilling_Project
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INFOTEXT
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1992-09-02
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613b
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16 lines
A research project initiated by the USA in
1968 to sample the rocks of the ocean crust.
The operation became international in 1975,
when Britain, France, Germany, Japan, and the
USSR also became involved. Over 800 boreholes
were drilled in all the oceans using the ship
Glomar Challenger, and knowledge of the
nature and history of the ocean basins was
increased dramatically. The technical
difficulty of drilling the seabed to a depth
of 2,000 m/6,500 ft was overcome by keeping
the ship in position with side-thrusting
propellers and satellite navigation, and by
guiding the drill using a radiolocation
system.