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There is a possibility that vast amounts of undersea resources are buried beneath Japanese territorial sea. In order to find these undersea resources, a detailed topography including specific objects and events of seabed should be carefully surveyed. One of effective methods for this is to use seabed visualization technologies, which are applied to an autonomous underwater vehicle (AUV). Therefore,...
We reported our concept design of a long term underwater observation system utilizing an AUV and described two key technologies to develop a practical system.
JAMSTEC has been developed underwater vehicles and observation equipments required for a variety of study about oceanography. Among the many research fields about deep-sea, in Japan there has been a growing interest in seabed resources from a few years ago. Then we had developed an AUV “Yumeiruka” to perform seabed resource survey. As one of the most significant feature of the shape of “Yumeiruka”,...
An acoustic positioning method to measure position of an underwater vehicle by inverse super short baseline (ISSBL) and acoustic data transmission is introduced in this paper. In this method a receiver array is equipped on the vehicle and direction of arrival (DOA) of acoustic signal from a surface station, such as research vessel and autonomous surface vehicle (ASV), is measured. Additionally information...
JAMSTEC developed some new underwater vehicles. One of them is “OTOHIME”. Because it was designed as a multi-mission type, it has not only the cruising ability but also the working ability through its skid is exchanged or desorbed. In order it to perform various missions, its control system was newly developed as a multi-CPU control unit. The control system is mainly composed of seven CPUs and they...
Japan Agency for Marine-Earth Science and Technology (JAMSTEC) has been developing three autonomous underwater vehicles (AUVs). And one of them is “Otohime”. The aim of this vehicle is the underwater environment research and the seabed mineral resources exploration. One of main missions is to get the detailed seafloor map. So some new technologies were applied to this vehicle in order to achieve such...
Exploration and mining of natural resources in the region of seabed are needed for lasting economic growth, because an abundance of natural resources, including rare metal, is in Japan's exclusive economic zone (EEZ). The cost down of exploration and mining is an important issue for industrialization. It is well known that unmanned and/or autonomous platforms for exploration are effective to reduce...
Since October 2010, JAMSTEC has developed two autonomous uderwater vehicles (AUVs); a cruising-AUV “Jinbei” and a working-AUV “Otohime” (Fig.1). Their major purposes are to observe underwater CO2 distribution around carbon dioxide capture and storage field, and to explore seabed mineral resources in Japan's EEZ. The cruising-AUV performs wide area survey with sonars and chemical sensors. According...
Autonomous Underwater Vehicle “JINBEI”, constructed in 2012, is a cruising type AUV with a weight of 2 ton and a length of 4.0m. The major purposes are observation of underwater CO2 distribution in deep sea and exploration of seabed mineral resources. It has four rear-thrusters, two mid-ship azimuthal thrusters, and a rear X-rudder. The AUV is equipped with three main sensors; a multi-beam echo sounder,...
JAMSTEC has tried a feasibility study of carbon dioxide capture and storage (CCS) using geobiological processes in the deep subsurface. We expect a biological CO2 turnover. Japan Society for the Promotion of Science (JSPS) funded this project. We found that a hydrocarbon system associated with lignite-coalbed is buried more than 2,000 meters below the seafloor off the Shimokita Peninsula in 2006....
JAMSTEC has developed a cruising autonomous underwater vehicle (AUV) and a working AUV for observations of carbon dioxide (CO2) in deep sea and explorations of underwater minerals since 2010. This paper concentrates topic on the former AUV. The AUV named “Jinbei” is 4 meters long and 2 tons in weight. Its propulsion is four rear-thrusters and two mid-ship thrusters with azimuthal control. It has a...
Japan Agency for Marine-Earth Science and Technology (JAMSTEC) has been developing two types of AUVs; a cruising-AUV “Jinbei” and a working-AUV “Otohime”, since October 2010. The main missions of them are to survey the environment near seafloor surface where Carbon dioxide capture and storage, to explore for seabed mineral resources and to make the detailed seafloor map using seafloor pictures. In...
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