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HUD-DYE 
About | Sampling
& Analysis | Results
The primary objective of this project is to elucidate
the interaction between secondary circulation and cross
channel variations in mixing in a stratified channel,
and the role that this interaction plays in driving
estuarine dispersion. During year one of this three-year
project a pilot study was completed which entailed a
dye tracer experiment within the Hudson River estuarine
regime. The pilot study enabled us to assess our methodology
and gain experience for the main experiement conducted
in May 2002.
The May 2002 study featured 4 dye experiments
that bracketed the neap/spring cycle. The first two
experiments occurred during neap tides when tidally
mean surface to bottom salinity stratification approached
15 psu. The third injection occurred during the neap
to spring transition. The final injection occurred at
spring tide and stratification was weak but slowly increasing.
All experiemtns commenced wityh an injection of fluorescence
dye into the bottom layer and tracked with two boats.
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