| 講演要旨(和文) | | 近年の資源需要の高まりから、海底金属資源の開発が求められている。事前の数値実験の結果、電磁探査が高電気伝導度を示す熱水鉱床の探査に効果的である。そこで伊豆小笠原ベヨネース海丘にある白嶺鉱床周辺において、自立型無人探査機（AUV）を用いた海底電磁探査を実施した。本研究では探査装置の紹介を行い、速報的な探査結果を紹介する。 |
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| | 講演要旨(英文) | | The recent growth of world-wide requirement of metals demands advanced explorations for finding metal mine and deposits. The feasibility studies demonstrated that the electromagnetic responses are very sensitive to the conductive layer simulating the submarine massive sulfide (SMS) deposits, which is buried at the depth of several tens meters. On the basis of the results, we developed instruments for the marine controlled-source electromagnetic (CSEM) survey with autonomous underwater vehicle (AUV), on which a transmitter was attached. For the real field test, R/V Yokosuka and AUV Urashima were used. The target region is a real deep-sea mine at the Izu-Bonin island arc, south of Japan. As a result, we succeed in the test experiment. Here, we report the preliminary result of AUV-CSEM survey around the SMS. |
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