New vein exploration technology（新しい鉱脈探査技術）

National Institute of Advanced Industrial Science and Technology regarded a gravitational slight change as Tokyo University and developed a technique to look for the veins such as a rare metal (rare metal) or the noble metal of the deep sea-bed. I carry out the exploration experiment that attached a gravity measurement device to a remotely operated submersible in September. I raise exploration efficiency and reduce cost and want to be able to hit a route for utilization of abundant seabed resource lying in the Japanese sea near the shore.
I announce it in earth planet science alliance meeting to hold in Chiba-shi in Japan on 22nd. The exploration of a submarine oil field and the gas field causes an earthquake artificially; from the difference in earthquake wave of the place with resources guess. The metal resources examine seafloor topography, and what dig the place that guessed says the present conditions.
The study team is attention in density rises when there is a heavy metal lump, and gravity slightly increasing underground. I developed technique to distinguish having vein or not. The exploration experiment is carried out in Gulf of Suruga of Shizuoka. I put a gravity measurement device on the remotely operated submersible "back island" of the marine research and development mechanism and go around the bottom of the sea of approximately 1,000 meters of depth of the water for three days and analyze it.
The rare metal-rich the deposits are found a lot in the Japanese sea near the shore. The continental shelf limit committee of the United Nations recognized the north of Japanese southernmost Okinotorishima as a continental shelf of Japan recently. The government hurries preparations for the exploration of the seabed resource. Because it will be that considerable seabed resource is idle because it will be that the continental shelf spreads out greatly, I am cheap and should come to be able to look for it.


東京大学と産業技術総合研究所などは重力のわずかな変化をとらえ、深海底のレアメタル（希少金属）や貴金属などの鉱脈を探す技術を開発した。無人潜水艇に重力測定装置を取り付けた探査実験を９月に実施する。探査効率を高めてコストを減らし、日本近海に眠る豊富な海底資源の活用に道筋をつけたい考え。
　千葉市で開く日本地球惑星科学連合大会で22日発表する。海底油田やガス田の探査は人工的に地震を起こし、地震波の違いから資源のある場所の見当をつける。金属資源は海底地形を調べ、見当をつけた場所を掘削しているのが現状という。　
研究チームは地下に重い金属の塊があると、密度が高まり重力がわずかに増すことに注目。鉱脈の有無を判別する手法を開発した。探査実験は静岡県の駿河湾で実施。海洋研究開発機構の無人潜水艇「うらしま」に重力測定装置を載せ、水深約1000メートルの海底を３日かけて巡回し、解析する。　
日本近海ではレアメタルを豊富に含む鉱床などが多数見つかっている。国連の大陸棚限界委員会はこのほど日本最南端の沖ノ鳥島の北方などを日本の大陸棚と認めた。政府は海底資源の探査に向けた準備を急いでいる。大陸棚も大きく広がっていることでしょうから、かなりの海底資源が眠っていることでしょうから、それを安価で探すことができるようになればいいでしょうね。