Use of a new high-speed digital data acquisition system in airborneice-sounding |
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Authors: | Wright D.L. Bradley J.A. Hodge S.M. |
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Affiliation: | US Geol. Survey, Denver, CO; |
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Abstract: | A high-speed digital data acquisition and signal averaging system for borehole, surface, and airborne radio-frequency geophysical measurements was designed and built by the US Geological Survey. The system permits signal averaging at rates high enough to achieve significant signal-to-noise- enhancement in profiling, even in airborne applications. The first field use of the system took place in Greenland in 1987 for recording data on a 150 by 150-km grid centered on the summit of the Greenland ice sheet. About 6000-line km were flown and recorded using the new system. The data can be used to site a proposed scientific corehole through the ice sheet |
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