On the 22nd, the Japan Agency for Marine-Earth Science and Technology announced that the deep-sea drilling vessel Chikyu, which is currently conducting research off the coast of Miyagi Prefecture, has drilled 980 meters beneath the seafloor at a depth of 6,897.5 meters in the Japan Trench. The total depth from sea level was 7,877.5 metres, breaking the previous record of 7,753 metres set by the digger himself in 2012. The Chikyu departed Shimizu Port in Shizuoka City on September 6th and arrived at its destination, about 200 kilometers off the coast of Miyagi Prefecture, on the 7th, with the aim of digging into the fault line that caused the Great East Japan Earthquake and finding out to what extent the force necessary to cause another major earthquake has recovered. Work began on the 13th, with the ship kept in place by six screws attached to the bottom of the vessel. A 40-metre drill pipe was connected to a 70-metre-tall tower on the ship and lowered to the seabed, and the drill began digging beneath the seabed from the 18th. On the 21st, it reached a depth of 7,877.5 metres below sea level. The Chikyu also went to the same area in 2012, the year after the Great East Japan Earthquake, and drilled 855 metres below the seabed at a depth of 6,898 metres. This breaks the previous record of 7,049.5 metres, set by a US research vessel in the Mariana Trench in 1978. This research voyage is part of an international project to explore the mechanisms behind massive earthquakes and tsunamis. Over the three month period, a total of more than 50 researchers in geology and seismology from 10 countries, including Japan, the United States and Europe, will board the ship. The total operating cost is 3.9 billion yen. [Tarumi Yurika] 2024/9/22 21:25 Mainichi Shimbun.
During the Soviet era, Russia dug 12,000m deep on the Kola Peninsula in the 1970s, but Japan is the world leader at 7,877m. Japan is really fabricating stuff.
From what I read in the article, digging isn’t the main focus, it’s more of a bonus. They’re only digging deeper because it’s necessary for the investigation.
>>27 Inject seawater into the mantle, causing a huge explosion underground, destroying the inside of the plate and causing a slow slip. It’s a completely artificial earthquake. Thank you.
Comments