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Structure Of The Internal Boundary Layer Over A Patch Of Pinnid Bivalves (Atrina Zelandica) In An Estuary, Vladimir Nikora, Malcolm O. Green, Simon F. Thrush, Terry M. Hume, Derek Goring
Structure Of The Internal Boundary Layer Over A Patch Of Pinnid Bivalves (Atrina Zelandica) In An Estuary, Vladimir Nikora, Malcolm O. Green, Simon F. Thrush, Terry M. Hume, Derek Goring
Journal of Marine Research
Measurements of tidal-current boundary-layer flow over an experimental 2-m by 2-m patch of pinnid bivalves (Atrina zelandica) in a northern New Zealand estuary are presented. Previous work demonstrated a link between "mesoscale" (order 100 m) patchiness of the benthic biota and time-averaged boundary-layer dynamics. The aim in this new experiment was to describe the three-dimensional structure of turbulence at the patch scale (order 1 m). Flow over three densities of Atrina was investigated: 340 individuals per 4 m2, 50 individuals per 4 m2 and zero individuals. An internal boundary layer (IBL) grows downstream from the …