Biogeochemistry of dissolved gallium and lead isotopes in the northeast Pacific and western Arctic Oceans ...
This thesis presents novel applications of dissolved Ga and Pb isotope ratios as oceanographic tracers of biogeochemical cycling and trace metal input mechanisms in the northeast Pacific Ocean, the Columbia River plume, and the Western Arctic Ocean. Conclusions of this thesis are based on the first...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2015
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| Online Access: | https://dx.doi.org/10.14288/1.0166278 https://doi.library.ubc.ca/10.14288/1.0166278 |
| Summary: | This thesis presents novel applications of dissolved Ga and Pb isotope ratios as oceanographic tracers of biogeochemical cycling and trace metal input mechanisms in the northeast Pacific Ocean, the Columbia River plume, and the Western Arctic Ocean. Conclusions of this thesis are based on the first multi-year transect of dissolved Ga in the northeast Pacific Ocean along Line P, the first dissolved Ga concentrations reported in the Arctic Ocean, and the first Line P transect of Pb isotope ratios. This thesis introduces 5 new tracer applications contributing to oceanographic research, dissolved Ga traces: 1) advective inputs of trace metals in the northeast Pacific, 2) Pacific and Atlantic source waters in the western Arctic, and 3) plume transport of the Columbia River, Ga/Pb traces: 4) fluvial freshwater inputs, and Pb isotope ratios trace: 5) geographically and temporally distinct trace metal inputs to the northeast Pacific. Dissolved Ga is positively correlated with the variable spice, interpreted to trace ... |
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