Mixing Processes and Hydraulic Control in a Highly Stratified Estuary
MASSACHUSETTS INST OF TECH CAMBRIDGE
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This thesis utilizes field data from the Fraser River Estuary British Columbia, Canada to investigate the nature of mixing processes in a highly stratified environment. During the late ebb, a stationary front exists at the Fraser mouth. Although stream wise densimetric Froude numbers at the front are supercritical, the front is oriented such that Froude numbers are equal to one in a reference frame perpendicular to the front. This represents a robust extension of established two-layer hydraulic theory to three dimensions, and implies similarity with trans-sonic flows. Mixing processes were evaluated at the mouth using a control volume approach to isolate mean vertical entrainment processes from turbulent processes.
- Hydrology, Limnology and Potamology