Abstract
Adjacent to the entrances of major estuaries, the concentrations and distributions of particulate coprostanol, hydrocarbons, and total suspended matter are controlled by both small-scale and large-scale processes. These processes result in the development of spatially separate plumes of coprostanol, hydrocarbons, and total suspended matter. Particle buoyancy appears to be a major factor controlling the sorting of particles into the three discrete plumes. At the inner shelf adjacent to the Chesapeake Bay entrance, patchiness of coprostanol, hydrocarbon, and total suspended matter concentrations is also controlled by alongshore wind stress which enhances the uncoupling of the distal ends of plumes. While Chesapeake Bay appears to be a chronic source of anthropogenic materials to adjacent shelf water, major pathways of several pollutants (sewage derived and hydrocarbons) do not spatially coincide with turbid or low-salinity plumes.
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