Diatom-bound nitrogen isotope and TEX86L-SST records of MD12-3394 and MD11-3353 ...
Previous studies suggest that, during the late Pleistocene ice ages, surface-deep exchange was somehow weakened in the Southern Ocean's Antarctic Zone (AZ), reducing the leakage of deeply sequestered CO2 and thus contributing to the lower atmospheric CO2 levels of the ice ages. To better unders...
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Online Access: | https://dx.doi.org/10.1594/pangaea.931028 https://doi.pangaea.de/10.1594/PANGAEA.931028 |
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ftdatacite:10.1594/pangaea.931028 2024-09-09T19:05:52+00:00 Diatom-bound nitrogen isotope and TEX86L-SST records of MD12-3394 and MD11-3353 ... Ai, Xuyuan E Studer, Anja S Sigman, Daniel M Martínez-García, Alfredo François, Fripiat Thöle, Lena M Michel, Elisabeth Gottschalk, Julia Arnold, Laura Moretti, Simone Schmitt, Mareike Oleynik, Sergey Jaccard, Samuel L Haug, Gerald H 2021 application/zip https://dx.doi.org/10.1594/pangaea.931028 https://doi.pangaea.de/10.1594/PANGAEA.931028 en eng PANGAEA https://dx.doi.org/10.1126/science.abd2115 https://dx.doi.org/10.1016/j.epsl.2019.115716 https://dx.doi.org/10.1038/nature20787 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Diatom nitrogen isotope Southern Ocean TEX86 Collection article Bundled Publication of Datasets 2021 ftdatacite https://doi.org/10.1594/pangaea.93102810.1126/science.abd211510.1016/j.epsl.2019.11571610.1038/nature20787 2024-06-17T09:24:58Z Previous studies suggest that, during the late Pleistocene ice ages, surface-deep exchange was somehow weakened in the Southern Ocean's Antarctic Zone (AZ), reducing the leakage of deeply sequestered CO2 and thus contributing to the lower atmospheric CO2 levels of the ice ages. To better understand the surface nutrient consumption in the Antarctic ocean during glacial intervals and its implication on atmospheric CO2 changes, we measured diatom-bound nitrogen isotopes (d15N_db) extending back to 150 thousand years ago (150ka) in two sediment cores in the Indian sector of the AZ. The data series include d15N_db, TEX86L-based SST, d18O of planktonic foraminifera Neogloboquadrina pachyderma (sin.), sediment Ba/Fe and the age model of MD12-3394 (48°23' S, 64°35' E, 2320m water depth), d15N_db and updated age model of MD11-3353 (50°34' S, 68°23' E, 1568m water depth), as well as the mean d15N_db of the two sediment cores, and the d15N_db offset calculated using the mean d15N_db and MD12-3394 d15N_db alone. The age ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Neogloboquadrina pachyderma Planktonic foraminifera Southern Ocean DataCite Antarctic Southern Ocean The Antarctic Indian Antarctic Ocean |
institution |
Open Polar |
collection |
DataCite |
op_collection_id |
ftdatacite |
language |
English |
topic |
Diatom nitrogen isotope Southern Ocean TEX86 |
spellingShingle |
Diatom nitrogen isotope Southern Ocean TEX86 Ai, Xuyuan E Studer, Anja S Sigman, Daniel M Martínez-García, Alfredo François, Fripiat Thöle, Lena M Michel, Elisabeth Gottschalk, Julia Arnold, Laura Moretti, Simone Schmitt, Mareike Oleynik, Sergey Jaccard, Samuel L Haug, Gerald H Diatom-bound nitrogen isotope and TEX86L-SST records of MD12-3394 and MD11-3353 ... |
topic_facet |
Diatom nitrogen isotope Southern Ocean TEX86 |
description |
Previous studies suggest that, during the late Pleistocene ice ages, surface-deep exchange was somehow weakened in the Southern Ocean's Antarctic Zone (AZ), reducing the leakage of deeply sequestered CO2 and thus contributing to the lower atmospheric CO2 levels of the ice ages. To better understand the surface nutrient consumption in the Antarctic ocean during glacial intervals and its implication on atmospheric CO2 changes, we measured diatom-bound nitrogen isotopes (d15N_db) extending back to 150 thousand years ago (150ka) in two sediment cores in the Indian sector of the AZ. The data series include d15N_db, TEX86L-based SST, d18O of planktonic foraminifera Neogloboquadrina pachyderma (sin.), sediment Ba/Fe and the age model of MD12-3394 (48°23' S, 64°35' E, 2320m water depth), d15N_db and updated age model of MD11-3353 (50°34' S, 68°23' E, 1568m water depth), as well as the mean d15N_db of the two sediment cores, and the d15N_db offset calculated using the mean d15N_db and MD12-3394 d15N_db alone. The age ... |
format |
Article in Journal/Newspaper |
author |
Ai, Xuyuan E Studer, Anja S Sigman, Daniel M Martínez-García, Alfredo François, Fripiat Thöle, Lena M Michel, Elisabeth Gottschalk, Julia Arnold, Laura Moretti, Simone Schmitt, Mareike Oleynik, Sergey Jaccard, Samuel L Haug, Gerald H |
author_facet |
Ai, Xuyuan E Studer, Anja S Sigman, Daniel M Martínez-García, Alfredo François, Fripiat Thöle, Lena M Michel, Elisabeth Gottschalk, Julia Arnold, Laura Moretti, Simone Schmitt, Mareike Oleynik, Sergey Jaccard, Samuel L Haug, Gerald H |
author_sort |
Ai, Xuyuan E |
title |
Diatom-bound nitrogen isotope and TEX86L-SST records of MD12-3394 and MD11-3353 ... |
title_short |
Diatom-bound nitrogen isotope and TEX86L-SST records of MD12-3394 and MD11-3353 ... |
title_full |
Diatom-bound nitrogen isotope and TEX86L-SST records of MD12-3394 and MD11-3353 ... |
title_fullStr |
Diatom-bound nitrogen isotope and TEX86L-SST records of MD12-3394 and MD11-3353 ... |
title_full_unstemmed |
Diatom-bound nitrogen isotope and TEX86L-SST records of MD12-3394 and MD11-3353 ... |
title_sort |
diatom-bound nitrogen isotope and tex86l-sst records of md12-3394 and md11-3353 ... |
publisher |
PANGAEA |
publishDate |
2021 |
url |
https://dx.doi.org/10.1594/pangaea.931028 https://doi.pangaea.de/10.1594/PANGAEA.931028 |
geographic |
Antarctic Southern Ocean The Antarctic Indian Antarctic Ocean |
geographic_facet |
Antarctic Southern Ocean The Antarctic Indian Antarctic Ocean |
genre |
Antarc* Antarctic Antarctic Ocean Neogloboquadrina pachyderma Planktonic foraminifera Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Ocean Neogloboquadrina pachyderma Planktonic foraminifera Southern Ocean |
op_relation |
https://dx.doi.org/10.1126/science.abd2115 https://dx.doi.org/10.1016/j.epsl.2019.115716 https://dx.doi.org/10.1038/nature20787 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.1594/pangaea.93102810.1126/science.abd211510.1016/j.epsl.2019.11571610.1038/nature20787 |
_version_ |
1809819879436451840 |