Geochemical response of the mid-depth Northeast Atlantic Ocean to freshwater input during Heinrich events 1 to 4
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- 作者：Anya J. Crockera ; b ; anya.crocker@noc.soton.ac.uk" class="auth_mail" title="E-mail the corresponding author ; Thomas B. Chalka ; c ; Ian Baileya ; 1 ; Megan R. Spencera ; Marcus Gutjahra ; 2 ; Gavin L. Fostera ; Paul A. Wilsona
- 关键词：Heinrich events ; North Atlantic palaeoceanography ; Last glacial period ; Neodymium isotopes ; B/Ca ; Carbon and oxygen isotopes ; Ice-rafted debris ; ODP Site 980
- 刊名：Quaternary Science Reviews
- 出版年：2016
- 出版时间：1 November 2016
- 年：2016
- 卷：151
- 期：Complete
- 页码：236-254
- 全文大小：3780 K
文摘
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We examine H1 to H4 in the mid-depth NE Atlantic (ODP 980) using εNd, B/Ca, δ13C and δ18O.
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Each H-event shows a unique, prominent geochemical excursion with no major influence from southern sourced water.
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We infer the imprint of water masses sourced from different northern hemisphere sites of subduction.
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Our findings may help explain why some H events show bigger climatic perturbations than others.