title: Mixing and dispersion of pollutants emitted from an outboard motor.
abstract: This paper quantifies the mixing and dispersion from an outboard motor by field experiments in a small subtropical waterway. Organic dye was used as a surrogate for exhaust emissions and was mixed with uncontaminated creek water before being dispersed into the creek. Dye concentrations were measured with an array of concentration probes stationed in the creek. The data were then processed and fitted with a power law function. The corresponding dispersion constants agreed well with the literature. However, the amplitude was lower than the IMO equation but higher than the correlation from laboratory tests. Results for dye concentration intermittency (presence of dye) are presented for the first time from such field measurements and show significant mixing in-homogeneity.
authors: School of Engineering and Physical Science, James Cook University, Townsville, Queensland 4814, Australia. rong.situ@jcu.edu.au
authors: Rong
authors: R
authors: Situ
authors: Richard J
authors: RJ
authors: Brown
mesh_terms: D004784:Environmental Monitoring; D008956:Models, Chemical; D012767:Ships; D001335:Vehicle Emissions / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D001335:Vehicle Emissions; D014874:Water Pollutants, Chemical