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Non-Technical summary:

Glacier Bay is glacially fed fjord in the south eastern Alaska where observations of nutrients, salinity and temperatures suggested continuous mixing and rapid circulation. This mixing and circulation of the bay contributes to the supply of iron and other valuable materials into coastal waters and into the open ocean. High levels of the essential element iron were recorded in the bay, higher than those previously measured in close proximity to the shoreline, and the sources for this iron were evaluated. Using iron to aluminum ratios. Glacial ice and rivers (although quite high in particulate iron concentrations) were determined not to be as notable a source as the continental shelf, implicating the sediments as the primary source of iron in coastal waters in winter through remobilization of iron through physical processes as well as chemical processes of diffusion, and it is this iron that is carried offshore in eddies which form in the winter months.

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