Geoenvironmental application of statistical techniques used in marine mineral exploration

Owen, Robert M.; Paulsen, S. C.; Noakes, John E.

doi:10.1080/10641199809379955

Cited by 1 publication

(1 citation statement)

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“…A proven perf0 ance record includes the determination of source, distrib tion, and fate of dredgeddisposed sediments, the delinea ion of point souf%es for anthropogenic contaminants, and the pe ormance of baseline and comparative surveys that readily demon trate the impact of unusual or one-time events (CAIS, 1998a CAIS, 1998b; Noakes et al, 1998;Owen et al, 1998;Noake et al, 1997b). In its present state, the GIMS/CS3 can be used f r comprehensive assessments of radiometric, trace metal, and o ganic constituents of surficial sediments on a regional scale, i both marine and freshwater environments.…”

Section: Gims/cs3 Rapid Survey Systemmentioning

confidence: 98%

Rapid mapping of anthropogenic radionuclides, metals, and organic compounds in surficial marine sediments

Noakes

Noakes²,

Dvoracek³

et al.

IEEE Oceanic Engineering Society. OCEANS'98. Conference Proceedings (Cat. No.98CH36259)

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The Center for Applied Isotope Studies has developed a rapid survey system that enables continuous collection, analysis, and near real time mapping of surficial bottom sediments in aquatic environments while the survey vessel is underway. The system is used to measure and map radiometric parameters of surficial sediments by continuous in sifu detection of gamma activities, and to determine and map elemental concentrations of sediments using non-destructive x-ray fluorescence (XRF) analysis of sediment wafers processed from samples collected at the sedimentlwater interface. The CAIS is now expanding system capabilities by incorporating a field-portable gas chromatographlmass spectrometer (GCih4S) into the sample processing line of the existing survey system, enabling in situ measurement of selected organic compound constituents in surficial sediment samples. To date, a sonication method using methylene chloride has been developed for sample extraction, and satisfactory detection levels have been obtained in the laboratory. A thermal desorption method is being developed for shipboard applications and near real time mapping of organic constituents of surface sediments.

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Section: Gims/cs3 Rapid Survey Systemmentioning

confidence: 98%