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From: IODP Expedition 386 Japan Trench Paleoseismology – blog
Breaking records: Deepest of the Deep
Posted by ECORD
18th May 2021
Posted in Offshore
By Prof. Michael Strasser (Exp. 386 Co-Chief Scientist)
IODP Expedition 386 reached two new depth records in Scientific Ocean Drilling & Coring
• the deepest water site ever drilled and cored at the water depth of 8023 m
• the deepest sub-sea level sample at 8060.74 mbsl (meters below sea level)
Forty-three years ago the legendary Drilling Vessel Glomar Challenger set the record for the deepest coring site in 50 years of scientific ocean drilling, by recovering two 15.5 and 20.5 m long cores from 7034 and 7029 meter water depth in the Mariana Trench (DSDP Leg 60 Site 461). This record has stood for all this time, until in the early morning of Friday May 14 2021, Captain Naoto Kimura of the Research Vessel Kaimei positioned the vessel at IODP Expedition 386 Site M0081, where the water depth is 8023 m.
The crew prepared the 40 meter long Giant Piston Corer (GPC) and ran it into the water at 09:20 local time. At a winch speed of 1.1 m/s it took about 2 hours and 40 minutes to lower the GPC assembly to just above seafloor at this deepest water site of our Expedition, and which now breaks the record as the new deepest water site drilled and cored within scientific ocean drilling history. ...
Read & See more at: Breaking records: Deepest of the Deep
