title: Measuring two-phase particle flux with a multi-frequency acoustic Doppler profiler.
abstract: A methodology is developed and tested for simultaneously extracting time-resolved one-dimensional profiles of the mass-concentration and velocity of two different particle types in a mixed suspension, using a multi-frequency pulse-to-pulse coherent Doppler instrument. The technique involves inversion of a model for frequency-dependent acoustic backscatter amplitude and phase. Results are presented from a laboratory settling column experiment, measuring a mixture of polystyrene beads (slowly-settling, strongly-scattering) and glass beads (quickly-settling, weakly-scattering) in a vertical pipe section.
authors.affiliation: Department of Oceanography, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
authors.forename: Gregory W
authors.initials: GW
authors.lastname: Wilson
authors.affiliation: Department of Oceanography, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
authors.forename: Alex E
authors.initials: AE
authors.lastname: Hay