1887

Abstract

Summary

The Cabinet Office, Government Japan started “Next-generation technology for ocean resources exploration” project as one of Cross-ministerial Strategic Innovation Promotion Program (SIP). In this project, the exploration target is seafloor massive sulphide (SMS), especially buried deposits. Very high resolution images are required in seismic survey.

We introduce the new concept of seismic data acquisition in the vicinity of ocean bottom using autonomous recording systems, in order to preserve high frequencies and achieve higher vertical and horizontal resolution. We have developed two types of surveys, the Vertical Cable Seismic (VCS) and the deep-towed autonomous cable seismic (ACS). VCS is a survey using vertical cables set on seafloor and gives the high resolution 3D image of the subsurface structure of the local area. On the other hand, the deep-towed ACS is a more efficient survey to explore the wider area. Through the actual surveys conducted in the hydrothermal area, it was demonstrated that these systems work well to achieve our objectives.

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/content/papers/10.3997/2214-4609.201702091
2017-09-03
2020-04-04
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References

  1. Chapman, N. R., Gettrust, J. F., Walia, R., Hannay, D., Spence, G. D., Wood, W. T. and Hyndman, R. D.
    [2002] High-resolution, deep-towed, multichannel seismic survey of deep-sea gas hydrates off Western Canada, Geophysics, 67(4), 1038–1047.
    [Google Scholar]
  2. Ward, P., Asakawa, E. and Shimizu, N.
    [2004] High resolution deep-tow seismic survey to investigate the methane hydrate stability zone in the Nankai Trough, Resource Geology54(1), 115–124.
    [Google Scholar]
  3. Asakawa, E., Murakami, F., Sekino, Y., Okamoto, T., Ishikawa, K., Tsukahara, H. and Shimura, T.
    [2012] Development of vertical cable seismic system, 74th EAGE Conference & Exhibition, P008.
    [Google Scholar]
  4. Asakawa, E., Murakami, F., Tsukahara, H. and Mizohata, S.
    [2014] Vertical Cable Seismic (VCS) Survey for Seafloor Massive Sulphide (SMS) Exploration, 76th EAGE Conference & Exhibition, Th ELI2 14.
    [Google Scholar]
  5. Asakawa, E., Murakami, F., Tsukahara, H., Mizohata, S. and Tara, K.
    [2015] Vertical Cable Seismic Surveys for SMS exploration in Izena Cauldron, Okinawa-Trough, 2015, in OCEANS — Genova 2015.
    [Google Scholar]
  6. Asakawa, E, Sumi, T., Yamakawa, T. and Kose, M.
    [2016] Multi-stage and integrated approach for seafloor massive sulfide (SMS) exploration, EAGE Near Surface Geoscience 2016 - First Conference on Geophysics for Mineral Exploration and Mining.
    [Google Scholar]
  7. Endo, M., Burtman, V., Petersen, E., Gribenko, A., Zhdanov, M., Lee, S. and Asakawa, E.
    [2016] Induced polarization effect in rock samples collected from submarine hydrothermal deposit, Near Surface Geoscience 2016 - First Conference on Geophysics for Mineral Exploration and Mining.
    [Google Scholar]
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