Meridional distribution and seasonal variation of stable oxygen isotope ratio of precipitation in the Southern Ocean
The stable oxygen isotope ratio(δ^O) in precipitation is known to have important meridional and seasonal variations, but there are almost no measurements of δ^O in precipitation over polar oceans. The present research took advantage of 4 opportunities for in situ observations in summer and winter at...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:290710960ef04b12b6067e79f72d0125 2023-05-15T14:04:54+02:00 Meridional distribution and seasonal variation of stable oxygen isotope ratio of precipitation in the Southern Ocean Kayo Nakamura Shigeru Aoki Takenobu Toyota Yuichi Aoyama 2010-07-01 https://doi.org/10.15094/00009534 https://doaj.org/article/290710960ef04b12b6067e79f72d0125 en other eng National Institute of Polar Research doi:10.15094/00009534 0085-7289 2432-079X https://doaj.org/article/290710960ef04b12b6067e79f72d0125 undefined Antarctic Record, Vol 54, Iss 2, Pp 190-202 (2010) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2010 fttriple https://doi.org/10.15094/00009534 2023-01-22T19:12:10Z The stable oxygen isotope ratio(δ^O) in precipitation is known to have important meridional and seasonal variations, but there are almost no measurements of δ^O in precipitation over polar oceans. The present research took advantage of 4 opportunities for in situ observations in summer and winter at high latitudes in the Southern Ocean. In addition, we analyzed samples of precipitation at Syowa Station in 2008 to obtain year-round data. Based on these data, we consider the meridional and seasonal variations of δ^O in precipitation over the Southern Ocean. In general, δ^O decreases with increasing latitude, and is lower in winter than in summer. The latitude gradient is stronger in winter. At 60°S, δ^O is -5.4‰ and -11.3‰ in summer and winter, respectively, while the corresponding figures at 66°S are -10.5‰ and -20.8‰. These results will help us understand the mechanisms of the salinity distribution and its variation in the Antarctic Ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Southern Ocean Unknown Antarctic Antarctic Ocean Southern Ocean Syowa Station The Antarctic |
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language |
English |
topic |
geo envir |
spellingShingle |
geo envir Kayo Nakamura Shigeru Aoki Takenobu Toyota Yuichi Aoyama Meridional distribution and seasonal variation of stable oxygen isotope ratio of precipitation in the Southern Ocean |
topic_facet |
geo envir |
description |
The stable oxygen isotope ratio(δ^O) in precipitation is known to have important meridional and seasonal variations, but there are almost no measurements of δ^O in precipitation over polar oceans. The present research took advantage of 4 opportunities for in situ observations in summer and winter at high latitudes in the Southern Ocean. In addition, we analyzed samples of precipitation at Syowa Station in 2008 to obtain year-round data. Based on these data, we consider the meridional and seasonal variations of δ^O in precipitation over the Southern Ocean. In general, δ^O decreases with increasing latitude, and is lower in winter than in summer. The latitude gradient is stronger in winter. At 60°S, δ^O is -5.4‰ and -11.3‰ in summer and winter, respectively, while the corresponding figures at 66°S are -10.5‰ and -20.8‰. These results will help us understand the mechanisms of the salinity distribution and its variation in the Antarctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Kayo Nakamura Shigeru Aoki Takenobu Toyota Yuichi Aoyama |
author_facet |
Kayo Nakamura Shigeru Aoki Takenobu Toyota Yuichi Aoyama |
author_sort |
Kayo Nakamura |
title |
Meridional distribution and seasonal variation of stable oxygen isotope ratio of precipitation in the Southern Ocean |
title_short |
Meridional distribution and seasonal variation of stable oxygen isotope ratio of precipitation in the Southern Ocean |
title_full |
Meridional distribution and seasonal variation of stable oxygen isotope ratio of precipitation in the Southern Ocean |
title_fullStr |
Meridional distribution and seasonal variation of stable oxygen isotope ratio of precipitation in the Southern Ocean |
title_full_unstemmed |
Meridional distribution and seasonal variation of stable oxygen isotope ratio of precipitation in the Southern Ocean |
title_sort |
meridional distribution and seasonal variation of stable oxygen isotope ratio of precipitation in the southern ocean |
publisher |
National Institute of Polar Research |
publishDate |
2010 |
url |
https://doi.org/10.15094/00009534 https://doaj.org/article/290710960ef04b12b6067e79f72d0125 |
geographic |
Antarctic Antarctic Ocean Southern Ocean Syowa Station The Antarctic |
geographic_facet |
Antarctic Antarctic Ocean Southern Ocean Syowa Station The Antarctic |
genre |
Antarc* Antarctic Antarctic Ocean Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Ocean Southern Ocean |
op_source |
Antarctic Record, Vol 54, Iss 2, Pp 190-202 (2010) |
op_relation |
doi:10.15094/00009534 0085-7289 2432-079X https://doaj.org/article/290710960ef04b12b6067e79f72d0125 |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00009534 |
_version_ |
1766276350015963136 |