Isotopic Characterization of Water Masses in the Southeast Pacific Region: Paleoceanographic Implications
In this study, we used stable isotopes of oxygen (δ18O), deuterium (δD), and dissolved inorganic carbon (δ13CDIC) in combination with temperature, salinity, oxygen, and nutrient concentrations to characterize the coastal (71°–78°W) and an oceanic (82°–98°W) water masses (SAAW—Subantarctic Surface Wa...
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ftdatacite:10.17169/refubium-34022 2023-05-15T13:41:51+02:00 Isotopic Characterization of Water Masses in the Southeast Pacific Region: Paleoceanographic Implications Reyes-Macaya, Dharma Hoogakker, Babette Martínez-Méndez, Gema Llanillo, Pedro J. Grasse, Patricia Mohtadi, Mahyar Mix, Alan Leng, Melanie J. Struck, Ulrich McCorkle, Daniel C. 2022 https://dx.doi.org/10.17169/refubium-34022 https://refubium.fu-berlin.de/handle/fub188/34305 unknown Freie Universität Berlin https://doi.org/10.1029/2021JC017525 https://dx.doi.org/10.1029/2021jc017525 https://doi.org/10.1029/2021JC017525 Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 CC-BY-NC-ND oxygen and deuterium stable isotopes in seawater carbon stable isotopes in dissolved inorganic carbon Southeast Pacific water mass distribution paleoceanography proxies 500 Naturwissenschaften und Mathematik550 Geowissenschaften, Geologie550 Geowissenschaften article-journal ScholarlyArticle Text Wissenschaftlicher Artikel 2022 ftdatacite https://doi.org/10.17169/refubium-34022 https://doi.org/10.1029/2021jc017525 2022-04-01T10:16:28Z In this study, we used stable isotopes of oxygen (δ18O), deuterium (δD), and dissolved inorganic carbon (δ13CDIC) in combination with temperature, salinity, oxygen, and nutrient concentrations to characterize the coastal (71°–78°W) and an oceanic (82°–98°W) water masses (SAAW—Subantarctic Surface Water; STW—Subtropical Water; ESSW—Equatorial Subsurface water; AAIW—Antarctic Intermediate Water; PDW—Pacific Deep Water) of the Southeast Pacific (SEP). The results show that δ18O and δD can be used to differentiate between SAAW-STW, SAAW-ESSW, and ESSW-AAIW. δ13CDIC signatures can be used to differentiate between STW-ESSW (oceanic section), SAAW-ESSW, ESSW-AAIW, and AAIW-PDW. Compared with the oceanic section, our new coastal section highlights differences in both the chemistry and geometry of water masses above 1,000 m. Previous paleoceanographic studies using marine sediments from the SEP continental margin used the present-day hydrological oceanic transect to compare against, as the coastal section was not sufficiently characterized. We suggest that our new results of the coastal section should be used for past characterizations of the SEP water masses that are usually based on continental margin sediment samples. Text Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
oxygen and deuterium stable isotopes in seawater carbon stable isotopes in dissolved inorganic carbon Southeast Pacific water mass distribution paleoceanography proxies 500 Naturwissenschaften und Mathematik550 Geowissenschaften, Geologie550 Geowissenschaften |
spellingShingle |
oxygen and deuterium stable isotopes in seawater carbon stable isotopes in dissolved inorganic carbon Southeast Pacific water mass distribution paleoceanography proxies 500 Naturwissenschaften und Mathematik550 Geowissenschaften, Geologie550 Geowissenschaften Reyes-Macaya, Dharma Hoogakker, Babette Martínez-Méndez, Gema Llanillo, Pedro J. Grasse, Patricia Mohtadi, Mahyar Mix, Alan Leng, Melanie J. Struck, Ulrich McCorkle, Daniel C. Isotopic Characterization of Water Masses in the Southeast Pacific Region: Paleoceanographic Implications |
topic_facet |
oxygen and deuterium stable isotopes in seawater carbon stable isotopes in dissolved inorganic carbon Southeast Pacific water mass distribution paleoceanography proxies 500 Naturwissenschaften und Mathematik550 Geowissenschaften, Geologie550 Geowissenschaften |
description |
In this study, we used stable isotopes of oxygen (δ18O), deuterium (δD), and dissolved inorganic carbon (δ13CDIC) in combination with temperature, salinity, oxygen, and nutrient concentrations to characterize the coastal (71°–78°W) and an oceanic (82°–98°W) water masses (SAAW—Subantarctic Surface Water; STW—Subtropical Water; ESSW—Equatorial Subsurface water; AAIW—Antarctic Intermediate Water; PDW—Pacific Deep Water) of the Southeast Pacific (SEP). The results show that δ18O and δD can be used to differentiate between SAAW-STW, SAAW-ESSW, and ESSW-AAIW. δ13CDIC signatures can be used to differentiate between STW-ESSW (oceanic section), SAAW-ESSW, ESSW-AAIW, and AAIW-PDW. Compared with the oceanic section, our new coastal section highlights differences in both the chemistry and geometry of water masses above 1,000 m. Previous paleoceanographic studies using marine sediments from the SEP continental margin used the present-day hydrological oceanic transect to compare against, as the coastal section was not sufficiently characterized. We suggest that our new results of the coastal section should be used for past characterizations of the SEP water masses that are usually based on continental margin sediment samples. |
format |
Text |
author |
Reyes-Macaya, Dharma Hoogakker, Babette Martínez-Méndez, Gema Llanillo, Pedro J. Grasse, Patricia Mohtadi, Mahyar Mix, Alan Leng, Melanie J. Struck, Ulrich McCorkle, Daniel C. |
author_facet |
Reyes-Macaya, Dharma Hoogakker, Babette Martínez-Méndez, Gema Llanillo, Pedro J. Grasse, Patricia Mohtadi, Mahyar Mix, Alan Leng, Melanie J. Struck, Ulrich McCorkle, Daniel C. |
author_sort |
Reyes-Macaya, Dharma |
title |
Isotopic Characterization of Water Masses in the Southeast Pacific Region: Paleoceanographic Implications |
title_short |
Isotopic Characterization of Water Masses in the Southeast Pacific Region: Paleoceanographic Implications |
title_full |
Isotopic Characterization of Water Masses in the Southeast Pacific Region: Paleoceanographic Implications |
title_fullStr |
Isotopic Characterization of Water Masses in the Southeast Pacific Region: Paleoceanographic Implications |
title_full_unstemmed |
Isotopic Characterization of Water Masses in the Southeast Pacific Region: Paleoceanographic Implications |
title_sort |
isotopic characterization of water masses in the southeast pacific region: paleoceanographic implications |
publisher |
Freie Universität Berlin |
publishDate |
2022 |
url |
https://dx.doi.org/10.17169/refubium-34022 https://refubium.fu-berlin.de/handle/fub188/34305 |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://doi.org/10.1029/2021JC017525 https://dx.doi.org/10.1029/2021jc017525 https://doi.org/10.1029/2021JC017525 |
op_rights |
Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.17169/refubium-34022 https://doi.org/10.1029/2021jc017525 |
_version_ |
1766159371888230400 |