Journal
GEOPHYSICS
Volume 74, Issue 6, Pages WCC79-WCC89Publisher
SOC EXPLORATION GEOPHYSICISTS
DOI: 10.1190/1.3157252
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Funding
- Swiss National Science Foundation (SNF) [200021-111846]
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Analyses of synthetic frequency-domain acoustic waveform data provide new insights into the design and imaging capability of crosshole surveys. The full complex Fourier spectral data offer significantly more information than other data representations such as the amplitude, phase, or Hartley spectrum. Extensive eigenvalue analyses are used for further inspection of the information content offered by the seismic data. The goodness of different experimental configurations is investigated by varying the choice of (1) the frequencies, (2) the source and receiver spacings along the boreholes, and (3) the borehole separation. With only a few carefully chosen frequencies, a similar amount of information can be extracted from the seismic data as can be extracted with a much larger suite of equally spaced frequencies. Optimized data sets should include at least one very low frequency-component. The. remaining frequencies should be chosen from
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