Planktonic foraminiferal depth habitat and delta O-18 calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean
Mortyn, P. G., and C. D. Charles, Planktonic foraminiferal depth habitat and d18O calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean, Paleoceanography, 18(2), 1037, doi:10.1029/2001PA000637, 2003. Copyright 2003 by the American Geophysical Union. Plankton tows conducte...
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ftcalifstateuniv:oai:dspace.calstate.edu:10211.3/200443 2023-05-15T17:14:58+02:00 Planktonic foraminiferal depth habitat and delta O-18 calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean Mortyn, P. Graham Charles, Christopher D. Mortyn, P. Graham Mortyn, P. Graham. California State University, Fresno. College of Science and Mathematics. Department of Earth & Environmental Science Charles, Christopher D. Scripps Institution of Oceanography/University of California, San Diego 2003 http://hdl.handle.net/10211.3/200443 https://doi.org/10.1029/2001PA000637 en_US eng American Geophysical Union (AGU) Wiley dx.doi.org/10.1029/2001PA000637 Paleoceanography (ISSN: 0883-8305, ESSN: 1944-9186). Vol. 18(2), 1037 doi:10.1029/2001PA000637 http://hdl.handle.net/10211.3/200443 2003 ftcalifstateuniv https://doi.org/10.1029/2001PA000637 2022-04-13T11:39:23Z Mortyn, P. G., and C. D. Charles, Planktonic foraminiferal depth habitat and d18O calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean, Paleoceanography, 18(2), 1037, doi:10.1029/2001PA000637, 2003. Copyright 2003 by the American Geophysical Union. Plankton tows conducted in the Atlantic sector of the Southern Ocean allow analysis of the influence of water column structure on planktonic foraminiferal abundance and delta(18)O composition. Foraminiferal abundance varies by several orders of magnitude across a large gradient in sea surface temperature and other hydrographic features, demonstrating high sensitivity of foraminiferal populations to regional differences in water properties. The depth of maximum abundance for key species such as Globigerina bulloides and Neogloboquadrina pachyderma is not constant from station to station. The pattern suggests that their abundance and shell chemistry are tied to density horizons or other conditions (such as food availability) that become more sharply defined with depth in the northern subantarctic. The consistent observation of Globorotalia inflata and Globoratalia truncatulinoides as relatively deep-dwelling species confirms their utility as indicators of upper thermocline properties. In delta(18)O all species are observed to be isotopically lighter than predicted from water properties, but the species-specific offset is fairly uniform at all stations. These observations define the utility of multispecies delta(18)O for reconstructing temperature and density stratification from past surface oceans. Other/Unknown Material Neogloboquadrina pachyderma Southern Ocean California State University (CSU): DSpace Southern Ocean Paleoceanography 18 2 n/a n/a |
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Open Polar |
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California State University (CSU): DSpace |
op_collection_id |
ftcalifstateuniv |
language |
English |
description |
Mortyn, P. G., and C. D. Charles, Planktonic foraminiferal depth habitat and d18O calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean, Paleoceanography, 18(2), 1037, doi:10.1029/2001PA000637, 2003. Copyright 2003 by the American Geophysical Union. Plankton tows conducted in the Atlantic sector of the Southern Ocean allow analysis of the influence of water column structure on planktonic foraminiferal abundance and delta(18)O composition. Foraminiferal abundance varies by several orders of magnitude across a large gradient in sea surface temperature and other hydrographic features, demonstrating high sensitivity of foraminiferal populations to regional differences in water properties. The depth of maximum abundance for key species such as Globigerina bulloides and Neogloboquadrina pachyderma is not constant from station to station. The pattern suggests that their abundance and shell chemistry are tied to density horizons or other conditions (such as food availability) that become more sharply defined with depth in the northern subantarctic. The consistent observation of Globorotalia inflata and Globoratalia truncatulinoides as relatively deep-dwelling species confirms their utility as indicators of upper thermocline properties. In delta(18)O all species are observed to be isotopically lighter than predicted from water properties, but the species-specific offset is fairly uniform at all stations. These observations define the utility of multispecies delta(18)O for reconstructing temperature and density stratification from past surface oceans. |
author2 |
Mortyn, P. Graham Mortyn, P. Graham. California State University, Fresno. College of Science and Mathematics. Department of Earth & Environmental Science Charles, Christopher D. Scripps Institution of Oceanography/University of California, San Diego |
author |
Mortyn, P. Graham Charles, Christopher D. |
spellingShingle |
Mortyn, P. Graham Charles, Christopher D. Planktonic foraminiferal depth habitat and delta O-18 calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean |
author_facet |
Mortyn, P. Graham Charles, Christopher D. |
author_sort |
Mortyn, P. Graham |
title |
Planktonic foraminiferal depth habitat and delta O-18 calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean |
title_short |
Planktonic foraminiferal depth habitat and delta O-18 calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean |
title_full |
Planktonic foraminiferal depth habitat and delta O-18 calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean |
title_fullStr |
Planktonic foraminiferal depth habitat and delta O-18 calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean |
title_full_unstemmed |
Planktonic foraminiferal depth habitat and delta O-18 calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean |
title_sort |
planktonic foraminiferal depth habitat and delta o-18 calibrations: plankton tow results from the atlantic sector of the southern ocean |
publisher |
American Geophysical Union (AGU) |
publishDate |
2003 |
url |
http://hdl.handle.net/10211.3/200443 https://doi.org/10.1029/2001PA000637 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Neogloboquadrina pachyderma Southern Ocean |
genre_facet |
Neogloboquadrina pachyderma Southern Ocean |
op_relation |
dx.doi.org/10.1029/2001PA000637 Paleoceanography (ISSN: 0883-8305, ESSN: 1944-9186). Vol. 18(2), 1037 doi:10.1029/2001PA000637 http://hdl.handle.net/10211.3/200443 |
op_doi |
https://doi.org/10.1029/2001PA000637 |
container_title |
Paleoceanography |
container_volume |
18 |
container_issue |
2 |
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n/a |
op_container_end_page |
n/a |
_version_ |
1766073088639762432 |