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Field test of X-ray sediment-concentration gage

Murphree, C.E. / Bolton, G.C. / McHenry, J.R. / Parsons, D.A.

Nuclear gage, powered by storage batteries, has sensing unit in flow and recording unit on shore, connected by water-tight flexible cable; magnitude of attenuation of X-rays, provided by cadmium-109 source (about 2 mc, and 470 days half-life), was measure of sediment concentration; gage was found to be sensitive not only to suspended sediment but also to air temperature and to instrument age; standard deviation of 15-min values was about 220 ppm; gage readings, corrected for age and air temperature, gave concentrations comparable to those determined by conventional sampling of flood waters.

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Field test of X-ray sediment-concentration gage

Murphree, C.E. / Bolton, G.C. / McHenry, J.R. / Parsons, D.A.

Nuclear gage, powered by storage batteries, has sensing unit in flow and recording unit on shore, connected by water-tight flexible cable; magnitude of attenuation of X-rays, provided by cadmium-109 source (about 2 mc, and 470 days half-life), was measure of sediment concentration; gage was found to be sensitive not only to suspended sediment but also to air temperature and to instrument age; standard deviation of 15-min values was about 220 ppm; gage readings, corrected for age and air temperature, gave concentrations comparable to those determined by conventional sampling of flood waters.

Field test of X-ray sediment-concentration gage

Murphree, C.E. / Bolton, G.C. / McHenry, J.R. / Parsons, D.A.

Nuclear gage, powered by storage batteries, has sensing unit in flow and recording unit on shore, connected by water-tight flexible cable; magnitude of attenuation of X-rays, provided by cadmium-109 source (about 2 mc, and 470 days half-life), was measure of sediment concentration; gage was found to be sensitive not only to suspended sediment but also to air temperature and to instrument age; standard deviation of 15-min values was about 220 ppm; gage readings, corrected for age and air temperature, gave concentrations comparable to those determined by conventional sampling of flood waters.

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Titel:

Field test of X-ray sediment-concentration gage

Weitere Titelangaben:

ASCE -- Proc (J Hydraulics Div)

Beteiligte:

Murphree, C.E. (Autor:in) / Bolton, G.C. (Autor:in) / McHenry, J.R. (Autor:in) / Parsons, D.A. (Autor:in)

Erschienen in:

American Society of Civil Engineers Proceedings, Journal of the Hydraulics Division ; 94

Erscheinungsdatum:

1968

Format / Umfang:

14 pages

Medientyp:

Aufsatz (Zeitschrift)

Format:

Print

Sprache:

Englisch

Schlagwörter:

© Metadata Copyright Elsevier B. V. All rights reserved.

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