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Lidar Detects Traces of Ethane in the Atmosphere

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Laser Exploration Inc. in Midland, Texas, reported that, in a field test of its lidar system, it had identified seeping hydrocarbon gas, presumably from underground deposits. Using a Raman-shifted chromium LISAF infrared laser made by Ophir Corp. in Littleton, Colo., the lidar system found ethane concentrations of less than 40 parts per billion over a 1- to 1.25-mile area. Background ethane levels in the atmosphere are 2 parts per billion. The demonstration also identified methane and propane in concentrations that would signal the likelihood of deposits of oil and gas below the...Read full article

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    Published: August 1999
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