DV Chikyu Drills to 2,466 Meters, Breaks Deep Drilling Record

摘要

The DV Chikyu in September broke the previous 2,111-meter record for deepest drilling depth and, a few days later, successfully drilled to 2,466 meters below the seafloor off Shimokita Peninsula, Japan, in the northwest Pacific Ocean. The water depth of Site C0020 is 1,180 meters below sea level. The team, part of the Integrated Ocean Drilling Program (IODP) Expedition 337 Deep Coalbed Biosphere, obtained core samples from 2,466 meters below the seafloor. These sample materials are taken from a deeply buried coal formation for the purpose of investigating co-evolution of Earth and life.