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                        <gco:CharacterString>Mk II airborne laser fluorosensor survey reprocessing and interpretation report: Barrow Sub-basin, Carnarvon Basin, North West Shelf, Australia</gco:CharacterString>
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                <gco:CharacterString>The Barrow Sub-basin airborne laser fluorosensor (ALF) MkII survey was flown in 1989 by BP. The survey was designed to detect natural oil seepage over a region of the Barrow and Dampier sub-basins in the Carnarvon Basin, Western Australia, in an effort to refine the petroleum prospectivity assessment.
The survey extended in a NE-SW direction for nearly 350km with an average width of about 100km. The line spacing was 4.5km and a total of 328,565 fluorosensor spectra were recorded.
This report presents a re-interpretation of the BP data by Signalworks Pty Ltd using the ALF Explorer? software. A total of 1,451 fluors were interpreted out of the 328,565 recorded spectra. This is an average fluor density of 4.42 fluors per thousand spectra.
The fluorescence response over most of the survey area consisted mainly of relatively low confidence fluors (compared to the more reliable MkIII survey data). High intensity fluors are located near islands but are probably caused by the exposed island material fluorescing.
While fluor density variations can be seen on the fluor map the geological implications are not clear. Because of its susceptibility to noise, the MkII ALF system produces less confident fluor maps than the MkIII system. Some mapped fluor density variations may be influenced by sea state or water property variations.</gco:CharacterString>
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