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    Theory and feasibility tests for a seismic scanning tunnelling macroscope

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    Geophys. J. Int.-2012-Schuster-1593-606.pdf
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    Description:
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    Type
    Article
    Authors
    Schuster, Gerard T. cc
    Hanafy, Sherif
    Huang, Yunsong cc
    KAUST Department
    Center for Subsurface Imaging and Fluid Modeling
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2012-07-23
    Online Publication Date
    2012-07-23
    Print Publication Date
    2012-09
    Permanent link to this record
    http://hdl.handle.net/10754/554369
    
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    Abstract
    We propose a seismic scanning tunnelling macroscope (SSTM) that can detect subwavelength scatterers in the near-field of either the source or the receivers. Analytic formulas for the time reverse mirror (TRM) profile associated with a single scatterer model show that the spatial resolution limit to be, unlike the Abbe limit of λ/2, independent of wavelength and linearly proportional to the source-scatterer separation as long as the scatterer is in the near-field region. This means that, as the scatterer approaches the source, imaging of the scatterer with super-resolution can be achieved. Acoustic and elastic simulations support this concept, and a seismic experiment in an Arizona tunnel shows a TRM profile with super-resolution adjacent to the fault location. The SSTM is analogous to the optical scanning tunnelling microscopes having subwavelength resolution. Scaled to seismic frequencies, it is theoretically possible to extract 100 Hz information from 20 Hz data by the imaging of near-field seismic energy.
    Citation
    Theory and feasibility tests for a seismic scanning tunnelling macroscope 2012, 190 (3):1593 Geophysical Journal International
    Publisher
    Oxford University Press (OUP)
    Journal
    Geophysical Journal International
    DOI
    10.1111/j.1365-246X.2012.05564.x
    Additional Links
    http://gji.oxfordjournals.org/cgi/doi/10.1111/j.1365-246X.2012.05564.x
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1365-246X.2012.05564.x
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program; Center for Subsurface Imaging and Fluid Modeling (CSIM)

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