Nearshore mixing and nutrient delivery along the western Antarctic Peninsula

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dc.contributor.authorCorbett, D. Reide (David Reide), 1971-
dc.contributor.authorCrenshaw, Jared
dc.contributor.authorNULL, KIMBERLY
dc.contributor.authorPETERSON, RICHARD N.
dc.contributor.authorPETERSON, LEIGHA E.
dc.contributor.authorLYONS, W. BERRY
dc.date.accessioned2020-04-21T17:32:33Z
dc.date.available2020-04-21T17:32:33Z
dc.date.issued2017-10
dc.description.abstractThe surface waters of the Southern Ocean play a key role in the global climate and carbon cycles by promoting growth of some of the world’s largest phytoplankton blooms. Several studies have emphasized the importance of glacial and sediment inputs of Fe that fuel the primary production of the Fe-limited Southern Ocean. Although the fertile surface waters along the shelf of the western Antarctic Peninsula (WAP) are influenced by large inputs of freshwater, this freshwater may take multiple pathways (e.g. calving, streams, groundwater discharge) with different degrees of water-rock interactions leading to variable Fe flux to coastal waters. During the summers of 2012–13 and 2013–14, seawater samples were collected along the WAP, near Anvers Island, to observe water column dynamics in nearshore and offshore waters. Tracers (223,224Ra, 222Rn, 18O, 2H) were used to evaluate the source and transport of water and nutrients in coastal fjords and across the shelf. Coastal waters are compared across two field seasons, with increased freshwater observed 2 -1 during2014.HorizontalmixingratesofwatermassesalongtheWAPrangedfrom110–3600m s .These mixing rates suggest a rapid transport mechanism for moving meltwater offshore.en_US
dc.identifier.doi10.1017/S095410201700013X
dc.identifier.urihttp://hdl.handle.net/10342/8274
dc.titleNearshore mixing and nutrient delivery along the western Antarctic Peninsulaen_US
dc.typeArticleen_US
ecu.journal.issue5en_US
ecu.journal.nameAntarctic Scienceen_US
ecu.journal.pages397-409en_US
ecu.journal.volume29en_US

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