Upper ocean spatial variations were strongest for composite nutrient
profiles; deeper waters were relatively invariant
Offshore-onshore variations in mixed layer nutrients were pronounced,
especially for ammonia, with Marguerite Bay providing a significant
Nearshore mixed-layer ammonia maxima were co-located with a coastal
current, at least in year 1 of GLOBEC
Mixed-layer nitrate, phosphate, and silica concentrations appeared in
steady-state, while ammonia concentrations and standing stocks showed
strong, erratic seasonal and year-to-year declines.
An inverse -3 mol:mol relationship between nitrate and ammonia existed
throughout all GLOBEC cruises and for an autumn JGOFS Ross Sea
Silica was an excellent tracer of upwelling and horizontal injection of
offshore waters onto the West Antarctic Shelf