Meridional circulation across the Antarctic Circumpolar Current serves as a double 231Pa and 230Th trap
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- 作者：Michiel Rutgers van der Loeffa ; mloeff@awi.de" class="auth_mail" title="E-mail the corresponding author ; Celia Venchiaruttia ; b ; Ingrid Stimaca ; Jan van Ooijenc ; Oliver Huhnd ; Gerd Rohardta ; Volker Strassa
- 关键词：231Pa ; 230Th ; Weddell Sea ; Antarctic Bottom Water ; GEOTRACES ; scavenging
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 December 2016
- 年：2016
- 卷：455
- 期：Complete
- 页码：73-84
- 全文大小：1961 K
文摘
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Weddell Sea Bottom Water is depleted in 230Th and 231Pa but does not leave the Weddell Gyre.
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Weddell Sea Deep Water, major source of AABW, is known to be enriched in 230Th and 231Pa.
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Deep-water 231Pa and 230Th scavenging in ACC preconditions the Pa/Th signal in AABW.
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In the meridional circulation, 231Pa and 230Th are removed twice in the opal belt.