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dc.contributor.advisorIto, Takamitsu
dc.contributor.authorBirmingham, Ryan W.
dc.date.accessioned2015-08-18T19:14:02Z
dc.date.available2015-08-18T19:14:02Z
dc.date.created2015-05
dc.date.issued2015-08-18
dc.date.submittedMay 2015
dc.identifier.urihttp://hdl.handle.net/1853/53728
dc.description.abstractWe use a numerical ocean model to evaluate the hypothesis that the continental shelves are significant sources of dissolved iron to the Southern Ocean. We simulate the distribution of passive tracers released from the 18 different continental shelf regions of the extra-tropical southern hemisphere oceans using an offline, eddy-permitting transport model. The circulation fields are taken from the Southern Ocean State Estimate, and we only simulate the transport of inert tracers focusing on the physical transport pathways. The resulting tracer fields are then compared with the remotely sensed ocean color data, revealing a remarkable resemblance between the distributions of shelf-source tracers and the climatological surface chlorophyll-a concentrations. We further analyze the spatial pattern of simulated tracer fields in relation to satellite ocean color data. Dynamic ocean features such as the Southern Ocean fronts and coastal waters are reflected in both the tracer model and the observed biological productivity. Our results support the overall importance of continental shelves as a potential source region for dissolved iron. The relative importance of different shelf regions is found to vary significantly depending on the relevant circulation features.
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherGeorgia Institute of Technology
dc.subjectIron
dc.subjectOcean
dc.subjectBiogeochemistry
dc.subjectNutrient transport
dc.subjectSouthern ocean
dc.titleTransport Pathways of Shelf Source Micronutrients to the Southern Ocean
dc.typeUndergraduate Research Option Thesis
dc.description.degreeUndergraduate
dc.contributor.departmentEarth and Atmospheric Sciences
thesis.degree.levelUndergraduate
dc.contributor.committeeMemberHartley, Dana
dc.contributor.committeeMemberIngall, Ellery
dc.date.updated2015-08-18T19:14:03Z


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