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Kansas Geological Survey, Open File Report 98-48
GEMS Site Borehole GPR, continued

Figure 9

Frequency spectra of Survey 2 GPR common-source gathers using (a) 50, and (b) 200 MHz borehole antenna. The vertical axis is frequency in megahertz, and the horizontal axis is vertical distance between source and receiver antennas. Source depth locations were 20.5 m. The antennas were 9.66 m apart at zero-offset. A small version of this figure is available.

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Kansas Geological Survey, Oil and Gas Information
Updated Nov. 17, 1998
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