Natural gas prospecting by using satellite MT data in Chishui area, Guizhou

摘要

Oil-gas remote sensing information is obtained from satellite TM data through graph- ic treatment in the light of the hydrocarbon-microseepage theory. The nine target areas (of three types) selected on this basis coincide well with the occurrence of natural gases and have been proved by subsequent prospecting. Plants in the target areas are characterized, as a result of hydrocarbon-microseepage, by abnormal spectral features with the absorption peaks of chlorophyll shifting toward blue light, reflectivity in the range of visible light increasing and re- flectivity in the near infrared region decreasing.