The Japan Agency for Marine-Earth Science and Technology , or JAMSTEC , is a Japanese national research institute for marine-earth science and technology. It was founded as Japan Marine Science and Technology Center in October 1971 and became an Independent Administrative Institution administered by the Ministry of Education, Culture, Sports, Science and Technology in April 2004. Wikipedia.
Japan Agency for Marine - Earth Science, Technology and University of Tokyo | Date: 2013-03-22
A power generation system includes a hydrothermal fluid well including a drilled hole reaching down to a hydrothermal fluid reservoir present below an ocean floor from an ocean floor surface and a casing installed in the drilled hole through a guide base on the ocean floor surface, an anode provided on a flow channel for hot water formed by the hydrothermal fluid well, a cathode provided in seawater other than the flow channel for hot water formed by the hydrothermal fluid well, and an ocean floor device that is connected with the anode and the cathode respectively and extracts generated power so as to operate. Power is easily and stably supplied on the ocean floor.
Japan Agency for Marine - Earth Science and Technology | Date: 2014-05-26
It is an object to provide a stress history measurement method and a stress sensor by which the stress history of an object being measured can be measured easily with high accuracy over a vide stress measurement range. In the stress history measurement method, the stress history to which the object being measured has been subjected is measured on the basis of the ratio of twinned calcite particles after the object to be measured has been subjected to an external force, the object having a stress sensor embedded therein and capable of being deformed elastically when being subjected to the external, force, the sensor including a number of calcite particles. The stress sensor is configured such that a number of calcite particles are hardened by a resin with adjacent particles kept in contact with each other.
Japan Agency for Marine - Earth Science and Technology | Date: 2013-02-08
The invention is a recovery method for recovering mineral resources from a hydrothermal fluid reservoir present beneath the ocean floor, the recovery method including the steps of: (A) providing a hydrothermal fluid well by drilling a hole reaching a hydrothermal fluid reservoir from an ocean floor surface via a guide base on the ocean floor surface, and then installing a casing in the drilled hole via the guide base; (B) precipitating minerals on the mineral-culturing device by installing a mineral-culturing device on the base guide so as to cover a well head of the hydrothermal fluid well, and bringing hot water ejecting from the well head into contact with sea water on the mineral-culturing device; and (C) recovering minerals precipitated on the mineral-culturing device together with the mineral-culturing device.
Japan Agency for Marine - Earth Science, Technology and Toray Industries Inc | Date: 2013-03-28
The pressure vessel includes a tubular portion and a cover portion made of fiber reinforced plastics. The outer peripheral surface of an end portion of the tubular portion has a reverse-tapered shape of which the diameter is increased toward an end face. The cover portion includes a wedge-shaped member installed along the reverse-tapered shape of the outer periphery surface of the end portion of the tubular portion, an outer ring for covering the wedge-shaped member from the outside, an inner ring installed to cover an opening of the tubular portion and the wedge-shaped member and connected to the outer ring, and a sample cap connected to the inner ring.
Japan Agency for Marine - Earth Science and Technology | Date: 2014-07-11
Provided is an image processing apparatus the calculation cost of which is low. The image processing apparatus is provided with a control means that sets a plurality of planes that form a layer in at least one direction in three dimensional space, sets one plane among the planes as a reference plane, and forms an image on the basis of the relationship between the positions of a visual axis and the reference plane.