Ice-rafted debris in the Southern Ocean : potential uses and limitations of ²³⁰Th-normalized fluxes
Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, June 2014.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2014
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| Online Access: | http://hdl.handle.net/1721.1/90663 |
| _version_ | 1811096318988255232 |
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| author | Fujimori, Jessica E. (Jessica Eileen) |
| author2 | David McGee. |
| author_facet | David McGee. Fujimori, Jessica E. (Jessica Eileen) |
| author_sort | Fujimori, Jessica E. (Jessica Eileen) |
| collection | MIT |
| description | Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, June 2014. |
| first_indexed | 2024-09-23T16:41:56Z |
| format | Thesis |
| id | mit-1721.1/90663 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T16:41:56Z |
| publishDate | 2014 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/906632019-04-12T14:57:48Z Ice-rafted debris in the Southern Ocean : potential uses and limitations of ²³⁰Th-normalized fluxes Potential uses and limitations of ²³⁰Th-normalized fluxes Fujimori, Jessica E. (Jessica Eileen) David McGee. Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences. Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences. Earth, Atmospheric, and Planetary Sciences. Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, June 2014. "May 12, 2014." Cataloged from PDF version of thesis. Includes bibliographical references (page 20). We measured IRD fluxes from 22-5 ka BP in two sediment cores from the Scotia Sea using two different methods. The first, commonly used method, uses the linear sedimentation rate (LSR), dry bulk density, and weight percent of IRD in the sample. The second uses ²³⁰ThTh normalization, which has been proposed as an improved way to determine sediment fluxes in sites with significant lateral redistribution. We found that IRD fluxes calculated using the LSR produced a chronology in closer agreement with prior studies than those calculated using ²³⁰ThTh normalization. Based on the differences in records between the two cores, we conclude that IRD flux records more likely provide information about local ice sheet dynamics than about ice sheet behavior as a whole. IRD flux records may be influenced by differences in local sediment focusing, currents, and distance from the ice sheet. by Jessica E. Fujimori. S.B. 2014-10-08T15:21:16Z 2014-10-08T15:21:16Z 2010 2014 Thesis http://hdl.handle.net/1721.1/90663 890404668 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 20 pages application/pdf ls----- Massachusetts Institute of Technology |
| spellingShingle | Earth, Atmospheric, and Planetary Sciences. Fujimori, Jessica E. (Jessica Eileen) Ice-rafted debris in the Southern Ocean : potential uses and limitations of ²³⁰Th-normalized fluxes |
| title | Ice-rafted debris in the Southern Ocean : potential uses and limitations of ²³⁰Th-normalized fluxes |
| title_full | Ice-rafted debris in the Southern Ocean : potential uses and limitations of ²³⁰Th-normalized fluxes |
| title_fullStr | Ice-rafted debris in the Southern Ocean : potential uses and limitations of ²³⁰Th-normalized fluxes |
| title_full_unstemmed | Ice-rafted debris in the Southern Ocean : potential uses and limitations of ²³⁰Th-normalized fluxes |
| title_short | Ice-rafted debris in the Southern Ocean : potential uses and limitations of ²³⁰Th-normalized fluxes |
| title_sort | ice rafted debris in the southern ocean potential uses and limitations of ²³⁰th normalized fluxes |
| topic | Earth, Atmospheric, and Planetary Sciences. |
| url | http://hdl.handle.net/1721.1/90663 |
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