Isotopic characterization of water masses in the Southeast Pacific Region: paleoceanographic implications
© The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Reyes-Macaya, D., Hoogakker, B., Martinez-Mendez, G., Llanillo, P. J., Grasse, P., Mohtadi, M., Mix, A., Leng, M. J., Struck, U., McCorkle, D. C., T...
Published in: | Journal of Geophysical Research: Oceans |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
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American Geophysical Union
2021
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Subjects: | |
Online Access: | https://hdl.handle.net/1912/28745 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/28745 |
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Open Polar |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
unknown |
topic |
Oxygen and deuterium stable isotopes in seawater Carbon stable isotopes in dissolved inorganic carbon Southeast Pacific Water mass distribution Paleoceanography proxies |
spellingShingle |
Oxygen and deuterium stable isotopes in seawater Carbon stable isotopes in dissolved inorganic carbon Southeast Pacific Water mass distribution Paleoceanography proxies Reyes-Macaya, Dharma Hoogakker, Babette Martínez-Méndez, Gema Llanillo, Pedro J. Grasse, Patricia Mohtadi, Mahyar Mix, Alan C. Leng, Melanie J. Struck, Ulrich McCorkle, Daniel C. Troncoso, Macarena Gayo, Eugenia M. Lange, Carina B. Farias, Laura Carhuapoma, Wilson Graco, Michelle Cornejo-D’Ottone, Marcela De Pol-Holz, Ricardo Fernandez, Camila Narváez, Diego Vargas, Cristian A. García-Araya, Francisco Hebbeln, Dierk 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 |
description |
© The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Reyes-Macaya, D., Hoogakker, B., Martinez-Mendez, G., Llanillo, P. J., Grasse, P., Mohtadi, M., Mix, A., Leng, M. J., Struck, U., McCorkle, D. C., Troncoso, M., Gayo, E. M., Lange, C. B., Farias, L., Carhuapoma, W., Graco, M., Cornejo-D’Ottone, M., De Pol Holz, R., Fernandez, C., Narvaez, D., Vargas, C. A., García-Araya, F., Hebbeln, D. Isotopic characterization of water masses in the Southeast Pacific Region: paleoceanographic implications. Journal of Geophysical Research: Oceans, 127(1), (2022): e2021JC017525, https://doi.org/10.1029/2021JC017525. 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. R/V Sonne cruises (SO102, SO211 ad SO245) were financed by the German Federal Ministry of Education and ... |
format |
Article in Journal/Newspaper |
author |
Reyes-Macaya, Dharma Hoogakker, Babette Martínez-Méndez, Gema Llanillo, Pedro J. Grasse, Patricia Mohtadi, Mahyar Mix, Alan C. Leng, Melanie J. Struck, Ulrich McCorkle, Daniel C. Troncoso, Macarena Gayo, Eugenia M. Lange, Carina B. Farias, Laura Carhuapoma, Wilson Graco, Michelle Cornejo-D’Ottone, Marcela De Pol-Holz, Ricardo Fernandez, Camila Narváez, Diego Vargas, Cristian A. García-Araya, Francisco Hebbeln, Dierk |
author_facet |
Reyes-Macaya, Dharma Hoogakker, Babette Martínez-Méndez, Gema Llanillo, Pedro J. Grasse, Patricia Mohtadi, Mahyar Mix, Alan C. Leng, Melanie J. Struck, Ulrich McCorkle, Daniel C. Troncoso, Macarena Gayo, Eugenia M. Lange, Carina B. Farias, Laura Carhuapoma, Wilson Graco, Michelle Cornejo-D’Ottone, Marcela De Pol-Holz, Ricardo Fernandez, Camila Narváez, Diego Vargas, Cristian A. García-Araya, Francisco Hebbeln, Dierk |
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 |
American Geophysical Union |
publishDate |
2021 |
url |
https://hdl.handle.net/1912/28745 |
long_lat |
ENVELOPE(-59.667,-59.667,-62.350,-62.350) ENVELOPE(-62.233,-62.233,-63.250,-63.250) ENVELOPE(-59.683,-59.683,-62.450,-62.450) |
geographic |
Antarctic Cornejo Fernandez Pacific Troncoso |
geographic_facet |
Antarctic Cornejo Fernandez Pacific Troncoso |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Reyes-Macaya, D., Hoogakker, B., Martinez-Mendez, G., Llanillo, P. J., Grasse, P., Mohtadi, M., Mix, A., Leng, M. J., Struck, U., McCorkle, D. C., Troncoso, M., Gayo, E. M., Lange, C. B., Farias, L., Carhuapoma, W., Graco, M., Cornejo-D’Ottone, M., De Pol Holz, R., Fernandez, C., Narvaez, D., Vargas, C. A., García-Araya, F., Hebbeln, D. (2022). Isotopic characterization of water masses in the Southeast Pacific Region: paleoceanographic implications. Journal of Geophysical Research: Oceans, 127(1), e2021JC017525. doi:10.1029/2021JC017525 |
op_relation |
https://doi.org/10.1029/2021JC017525 Reyes-Macaya, D., Hoogakker, B., Martinez-Mendez, G., Llanillo, P. J., Grasse, P., Mohtadi, M., Mix, A., Leng, M. J., Struck, U., McCorkle, D. C., Troncoso, M., Gayo, E. M., Lange, C. B., Farias, L., Carhuapoma, W., Graco, M., Cornejo-D’Ottone, M., De Pol Holz, R., Fernandez, C., Narvaez, D., Vargas, C. A., García-Araya, F., Hebbeln, D. (2022). Isotopic characterization of water masses in the Southeast Pacific Region: paleoceanographic implications. Journal of Geophysical Research: Oceans, 127(1), e2021JC017525. https://hdl.handle.net/1912/28745 doi:10.1029/2021JC017525 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1029/2021JC017525 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
127 |
container_issue |
1 |
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1766249383771242496 |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/28745 2023-05-15T13:48:31+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 C. Leng, Melanie J. Struck, Ulrich McCorkle, Daniel C. Troncoso, Macarena Gayo, Eugenia M. Lange, Carina B. Farias, Laura Carhuapoma, Wilson Graco, Michelle Cornejo-D’Ottone, Marcela De Pol-Holz, Ricardo Fernandez, Camila Narváez, Diego Vargas, Cristian A. García-Araya, Francisco Hebbeln, Dierk 2021-12-23 https://hdl.handle.net/1912/28745 unknown American Geophysical Union https://doi.org/10.1029/2021JC017525 Reyes-Macaya, D., Hoogakker, B., Martinez-Mendez, G., Llanillo, P. J., Grasse, P., Mohtadi, M., Mix, A., Leng, M. J., Struck, U., McCorkle, D. C., Troncoso, M., Gayo, E. M., Lange, C. B., Farias, L., Carhuapoma, W., Graco, M., Cornejo-D’Ottone, M., De Pol Holz, R., Fernandez, C., Narvaez, D., Vargas, C. A., García-Araya, F., Hebbeln, D. (2022). Isotopic characterization of water masses in the Southeast Pacific Region: paleoceanographic implications. Journal of Geophysical Research: Oceans, 127(1), e2021JC017525. https://hdl.handle.net/1912/28745 doi:10.1029/2021JC017525 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND Reyes-Macaya, D., Hoogakker, B., Martinez-Mendez, G., Llanillo, P. J., Grasse, P., Mohtadi, M., Mix, A., Leng, M. J., Struck, U., McCorkle, D. C., Troncoso, M., Gayo, E. M., Lange, C. B., Farias, L., Carhuapoma, W., Graco, M., Cornejo-D’Ottone, M., De Pol Holz, R., Fernandez, C., Narvaez, D., Vargas, C. A., García-Araya, F., Hebbeln, D. (2022). Isotopic characterization of water masses in the Southeast Pacific Region: paleoceanographic implications. Journal of Geophysical Research: Oceans, 127(1), e2021JC017525. doi:10.1029/2021JC017525 Oxygen and deuterium stable isotopes in seawater Carbon stable isotopes in dissolved inorganic carbon Southeast Pacific Water mass distribution Paleoceanography proxies Article 2021 ftwhoas https://doi.org/10.1029/2021JC017525 2022-10-29T22:57:31Z © The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Reyes-Macaya, D., Hoogakker, B., Martinez-Mendez, G., Llanillo, P. J., Grasse, P., Mohtadi, M., Mix, A., Leng, M. J., Struck, U., McCorkle, D. C., Troncoso, M., Gayo, E. M., Lange, C. B., Farias, L., Carhuapoma, W., Graco, M., Cornejo-D’Ottone, M., De Pol Holz, R., Fernandez, C., Narvaez, D., Vargas, C. A., García-Araya, F., Hebbeln, D. Isotopic characterization of water masses in the Southeast Pacific Region: paleoceanographic implications. Journal of Geophysical Research: Oceans, 127(1), (2022): e2021JC017525, https://doi.org/10.1029/2021JC017525. 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. R/V Sonne cruises (SO102, SO211 ad SO245) were financed by the German Federal Ministry of Education and ... Article in Journal/Newspaper Antarc* Antarctic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Antarctic Cornejo ENVELOPE(-59.667,-59.667,-62.350,-62.350) Fernandez ENVELOPE(-62.233,-62.233,-63.250,-63.250) Pacific Troncoso ENVELOPE(-59.683,-59.683,-62.450,-62.450) Journal of Geophysical Research: Oceans 127 1 |