日本AUV：將在6000公尺深處開採稀土
・從南鳥島海岸的海底打撈出稀土泥。
・日本將從2028年起開採生產稀土
我們將為您提供日經新聞發表的文章摘要。
Japanese government strategy:
On April 26, Japan’s ocean policy decided on the “priority strategy for ocean development.”
Japan’s Strategic Innovation Creation Program”:
Establishing technology to extract rare earths from the seabed at a depth of 6,000 meters.
Rare earth mining on the seabed around Minamitorishima:
1. The company has set a goal of establishing a production system starting in 2028.
2. Aim to strengthen the supply chain by domestically producing rare earths.
Development of autonomous unmanned vehicle (AUV):
Starting in June 2024, the government will cover the entire cost of private demonstration tests.
Until 2027, we will conduct trials of offshore wind power generation inspections and build a business model.
Japanese submarine exploration technology:
By 2030, foster Japan’s underwater drone industry and provide submarine exploration technology overseas.
① Underwater drone
②Understanding the ocean situation
③Offshore wind power
④ Minamitorishima development
⑤ Border remote islands
(6) Arctic policy was designated as an important area. We will also consider adding it.
https://www.nikkei.com/article/DGXZQOUA266HU0W4A420C2000000/
Japan Oceanographic Organization: Exploring rare earths off the coast of Minamitorishima with AUV
Nihon Keizai Shimbun (September 15, 2023)
Japan Agency for Marine-Earth Science and Technology:
Investigation has begun for rare earth mud mining in the Ogasawara Islands and Minamitorishima deep sea.
Investigate with an autonomous unmanned vehicle (AUV):
Seabed exploration was conducted from July to August 2023.
The second seabed exploration will begin in December 2023.
Strategic Innovation Creation Program: (SIP)
Test drilling to start in 2025:
From now on, exploration will be carried out two to three times a year, and trial drilling will begin in 2025.
Detailed data will be accumulated in preparation for trial drilling to begin in 2025.
The first seabed exploration was conducted on a trial basis from July 25th to August 11th.
We surveyed the ocean floor structure at a point 20 meters above the seabed at a depth of 5,600 meters.
Announcement from Japan Maritime Organization:
Japan’s first AUV operated at a depth deeper than 4000m.
The method of investigating using sound waves from a ship has a lower resolution.
In particular, it is difficult to understand the detailed and complex topography of the ocean floor.
Japanese autonomous unmanned vehicle (AUV)
AUVs can be used to survey large areas and efficiently.
When using a remote-controlled robot, a cable is required.
Exploration results by Japanese AUV:
1. Detailed measurements of changes in the unevenness of the seafloor topography in 100m increments.
2. This time, we were able to detect a rare earth stratum as thin as 20 cm.
3. By using sonar, they were able to obtain clearer cross-sectional images of the ocean floor.
The resolution is several tens of times more accurate than conventional surveys from ships.
Undersea topography around Minamitorishima:
1. There is a large amount of mud containing high concentrations of rare earths.
2. A large amount of rare earths will be mined through trial drilling in 2025.
In 2027, we will secure one-tenth of the amount needed for industrialization.
https://www.nikkei.com/article/DGXZQOUC139OI0T10C23A9000000/
Japanese government: Develops 7000m deep AUV for ocean exploration
We provide a summary of articles published in the Nikkei Shimbun (December 30, 2023).
Development of 7000m deep AUV:
A project to develop an AUV that can withstand water depths of 7,000 meters has begun.
The government plans to begin operating autonomous unmanned vehicles (AUVs) in 2025.
The waters off Minamitorishima are 5,600m deep:
It enables diving to the bottom of the Japan Trench, one of the deepest in the world.
It will be used for rare earth and earthquake research from a security perspective.
Japan’s autonomous unmanned underwater vehicle (AUV):
Conventional AUVs in Japan have a limit of diving to a depth of 4,000 meters.
Disclosing technology to private companies:
The Japan Agency for Marine-Earth Science and Technology (JAMSTEC) will release its technology to private companies.
Unleash important software technology that controls the movement of drones.
https://www.nikkei.com/article/DGXZQOUA247G40U3A121C2000000/