Chikyu showcases riser drilling for deep-sea research

  • Published 2009 in Nature

Abstract

The first scientific ocean-floor drilling project to use a riser drill — equipment previously used in oil exploration — was completed last week. The Japanese research vessel Chikyu (pictured) drilled 1,600 metres below the sea floor of the Nankai Trough, an earthquake-generating zone off the Pacific coast of Japan. Riser drilling circulates mud in an extra… (More)
DOI: 10.1038/460677e

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