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- W2087737337 abstract "A super crosswell tomography system (U.S. Patent No. 5,406,530) has been built and successfully tested across a long crosswell distance (540 m) at Sanibel Island Florida. This system is designed to transmit the acoustic pulse of desired frequency content across desired crosswell distance through any sediment. This is done by generating a long sequence of phase modulated pseudo random binary code repeated indefinitely while averaging and correlating in real time until desired signal to noise ratio has been attained. Typically 1600 averages of 4095 cycle PRBS codes were enough to recognize arrivals of correlated pulse at frequencies from 250 to 6000 Hz through 540 m of porous limestones. Strong velocity dispersions measured from these different frequency pulses have determined the hydraulic structures within the limestone aquifer." @default.
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- W2087737337 date "1995-01-01" @default.
- W2087737337 modified "2023-09-27" @default.
- W2087737337 title "Super crosswell tomography for imaging the hydraulic structure of the earth" @default.
- W2087737337 cites W2143777081 @default.
- W2087737337 doi "https://doi.org/10.1190/1.1887356" @default.
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