Imaging hydrothermal mineral deposits area by reflection seismic processing using Vertical Cable Seismic and Ocean Based Sound Source

Yutaro Seino, Hidekazu Tokuyama, Juichiro Ashi, Kenji Tara, Eiichi Asakawa, Yasuhiro Asano, Akira Saito

    研究成果: Conference contribution

    抄録

    For the estimation of the hydrothermal mineral deposits reserves, geophysical exploration is indispensable, and the practical geophysical survey was conducted in 2013 at the Izena cauldron in the Okinawa trough, known distribution area of the hydrothermal deposits. Shallow seismic data were successfully acquired by the Vertical Cable Seismic method with the Ocean Based Sound Source (VCS-OBSS system). The OBSS system can generate high frequency waves of 1kHz Ricker wavelet, and high resolution data were acquired at this complex hydrothermal area. The data were processed by the three-dimensional Pre-Stack Depth Migration (3D-PSDM) method, and the output volume size was 160m × 220m × 400m. As a result of the interpretation, several continuous reflectors were detected, considering to be indicating the buried sulfide ore mound and the stockwork zone. This study concludes that the VCS-OBSS system is one of the effective geophysical methods for the exploration of the ocean bottom hydrothermal mineral deposits.

    本文言語English
    ホスト出版物のタイトルTechno-Ocean 2016: Return to the Oceans
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ22-27
    ページ数6
    ISBN(電子版)9781509024452
    DOI
    出版ステータスPublished - 2017 3 30
    イベント16th Techno-Ocean, Techno-Ocean 2016 - Kobe, Japan
    継続期間: 2016 10 62016 10 8

    Other

    Other16th Techno-Ocean, Techno-Ocean 2016
    国/地域Japan
    CityKobe
    Period16/10/616/10/8

    ASJC Scopus subject areas

    • 海洋学
    • 水の科学と技術
    • エネルギー工学および電力技術
    • 海洋工学
    • 器械工学

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