Albertson, S. L.. Washington State Dept. of Ecology, alberts@ocean.washington.edu
Newton, J. L.. Washington State Dept. of Ecology, newton@ocean.washington.edu
Edie, M. M.I.T., medie@erl.mit.edu

 
INVESTIGATION OF PRESENT VERSUS HISTORIC CIRCULATION IN HOOD CANAL WITH A THREE-LAYER BOX MODEL
 
The Hood Canal, a narrow fjord-like estuary in Puget Sound, consists of a deep basin (>200m) with sluggish circulation where exchange water from seaward must flow over a shallow entrance sill (<50m). Diversions from the Skokomish River toward the landward terminus of Hood Canal, at the Great Bend, for a hydroelectric project have caused greater amounts of freshwater to be realeased later in the spring and summer. We analyze 14 recent (1994-1998 transects of the Hood Canal and compare them against hydrographic data from pre-1975 (Collias, et al) with the aid of three-layer box model using salinity as a tracer. We investigate whether changes in freshwater input have resulted in any long-term changes in stratification, phytoplankton dynamics and near-bottom dissolved oxygen concentrations. Collias, EE., N. McGary, and C.A. Barnes, 1974. Atlas of Physical and Chemical Properties of Puget Sound and Approaches. Washington Sea Grant 74-1, Seattle, WA.
 
Day: Tuesday, Feb. 2
Time: Poster
Location: Sweeney Center
 
Code: SS07TU1645S