Method and apparatus for underwater detection of hydrocarbons

Details Method and apparatus for underwater detection of hydrocarbons Method and apparatus for underwater detection of hydrocarbons

G - Physics

01

N

73/51.5

G01N 21/64 (2006.01) G01N 21/53 (2006.01) G01N 33/18 (2006.01) G01V 8/02 (2006.01) G01V 9/00 (2006.01)

Patent

CA 1165137

Abstract of the Disclosure Method and apparatus for detecting the presence of hydro- carbons and other substance that fluoresces or absorbs light within a body of water which utilizes a controlled submersible vehicle scanning at or near the water bottom. The method uti- lizes a selected frequency light source as carried by the sub- mersible to scan the water bottom, and the returned light energy, either at the wavelength of oil fluorescing in water or the source frequency backscatter, is detected and processed for the water bottom as well as a water region that is a selected distance above the water floor. Alternative forms of apparatus are dis- closed for carrying out the functions of both oil fluorescence detection, and for obtaining differential absorption readings as to light source backscatter energy that is created by the ambient water and other factors in the water environment such as marine life, turbidity, etc.

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