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26,322 Ft.: OSIL Giant Piston Corer Breaks Deep-Ocean Sampling Record
Ocean Scientific International report that one of its Giant Piston Corer systems has broken two records in scientific ocean drilling and coring on the International Ocean Discovery Program (IODP) Expedition 386.
The expedition has been staged by the European Consortium for Ocean Research Drilling (ECORD) to gain an insight into the seismic history of the study region off the Japanese coast, and is supported by the Japan Agency for Marine-Earth Science and Technology (Jamstec). On Friday May 14, 2021, the team on board the RV Kaimei recorded an historic sampling water depth of 8,023m (26,322 ft.), and recovered a 37.74m core in a 40m barrel string, a 94.3% recovery rate and record deepest sub-sea level sample (from 8060.74 metres below sea level) from the Giant Piston Corer that was produced, installed and supported by OSIL.
A crew in Japan has set the record for the deepest sea drilling and the deepest sub-sea level sample after recovering a 37-meter-long (121 feet) sediment core from a site on the seabed just over 8 kilometers (5 miles) below sea level.
The research vessel KAIMEI set the record on the morning of May 14, 2021, at a site in the Japan Trench in the Western Pacific, according to an announcement on the project’s blog. The previous record was set in 1978 when the drilling vessel
Glomar Challenger recovered a sediment core from the seabed at 7-kilometers (4.3 miles) water depth in the Mariana Trench.
For the new feat, drilling equipment was sent into the water a 9:20 am local time and it took 2 hours and 40 minutes to reach the seafloor. It wasn’t until 3:00 pm local time it was successfully recovered and brought back to the ship deck.
Tracking giant earthquakes in the Ring of Fire
11.03.2021
Many processes behind giant earthquakes are still not understood. Ten years after the Tohoku-oki earthquake in Japan, an international team aims to unravel the sedimentary archive of past earthquakes in the Japan Trench. Michael Strasser from the Sedimentary Geology Working Group is one of the scientific leaders of the deep sea-expedition in the framework of the IODP.
Image: Research vessel Kaimei. (Credit: JAMSTEC)
Exactly ten years ago today, on 11 March 2011, Japan was unexpectedly struck by one of the most severe earthquakes ever recorded, resulting in a disaster. The Tohoku-oki earthquake registered 9.0 on the moment magnitude scale (Mw) – a - precise scientific indication of the strength of earthquakes: it triggered a tsunami with enormous destructive force that killed thousands of people and resulted in a nuclear disaster at the Fukushima-Daiichi nuclear power plant. Smaller earthquakes are not unusual