Rapid neodymium release to marine waters from lithogenic sediments in the Amazon estuary
Rare earth element (REE) concentrations and neodymium isotopic composition (ɛNd) are tracers for ocean circulation and biogeochemistry. Although models suggest that REE release from lithogenic sediment in river discharge may dominate all other REE inputs to the oceans, the occurrence, mechanisms and...
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| Veröffentlicht in: | Nature communications 2015-07, Vol.6 (1), p.7592-7592, Article 7592 |
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| creator | Rousseau, Tristan C. C. Sonke, Jeroen E. Chmeleff, Jérôme van Beek, Pieter Souhaut, Marc Boaventura, Geraldo Seyler, Patrick Jeandel, Catherine |
| description | Rare earth element (REE) concentrations and neodymium isotopic composition (ɛNd) are tracers for ocean circulation and biogeochemistry. Although models suggest that REE release from lithogenic sediment in river discharge may dominate all other REE inputs to the oceans, the occurrence, mechanisms and magnitude of such a source are still debated. Here we present the first simultaneous observations of dissolved ( |
| doi_str_mv | 10.1038/ncomms8592 |
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Neodymium isotopes are tracers for past and present ocean circulation and biogeochemistry. Here, the authors combine observations of neodymium and radium isotopes in the Amazon estuary and show that the rapid release of neodymium from river suspended sediments leaves a strong imprint on coastal sea water.</description><identifier>ISSN: 2041-1723</identifier><identifier>EISSN: 2041-1723</identifier><identifier>DOI: 10.1038/ncomms8592</identifier><identifier>PMID: 26158849</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>704/106/47 ; 704/2151/2738 ; Earth Sciences ; Humanities and Social Sciences ; Hydrology ; multidisciplinary ; Science ; Science (multidisciplinary) ; Sciences of the Universe</subject><ispartof>Nature communications, 2015-07, Vol.6 (1), p.7592-7592, Article 7592</ispartof><rights>The Author(s) 2015</rights><rights>Copyright Nature Publishing Group Jul 2015</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><rights>Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. 2015 Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c542t-ac4e0c9b85cb1365654e6e4060b29395b52f6b468d3527aa0431353eea7a140b3</citedby><cites>FETCH-LOGICAL-c542t-ac4e0c9b85cb1365654e6e4060b29395b52f6b468d3527aa0431353eea7a140b3</cites><orcidid>0000-0003-3390-0614 ; 0000-0002-4915-4719</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4510642/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4510642/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,27901,27902,41096,42165,51551,53766,53768</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26158849$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-02053375$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Rousseau, Tristan C. C.</creatorcontrib><creatorcontrib>Sonke, Jeroen E.</creatorcontrib><creatorcontrib>Chmeleff, Jérôme</creatorcontrib><creatorcontrib>van Beek, Pieter</creatorcontrib><creatorcontrib>Souhaut, Marc</creatorcontrib><creatorcontrib>Boaventura, Geraldo</creatorcontrib><creatorcontrib>Seyler, Patrick</creatorcontrib><creatorcontrib>Jeandel, Catherine</creatorcontrib><title>Rapid neodymium release to marine waters from lithogenic sediments in the Amazon estuary</title><title>Nature communications</title><addtitle>Nat Commun</addtitle><addtitle>Nat Commun</addtitle><description>Rare earth element (REE) concentrations and neodymium isotopic composition (ɛNd) are tracers for ocean circulation and biogeochemistry. Although models suggest that REE release from lithogenic sediment in river discharge may dominate all other REE inputs to the oceans, the occurrence, mechanisms and magnitude of such a source are still debated. Here we present the first simultaneous observations of dissolved (<0.45 μm), colloidal and particulate REE and ɛNd in the Amazon estuary. A sharp drop in dissolved REE in the low-salinity zone is driven by coagulation of colloidal matter. At mid-salinities, total dissolved REE levels slightly increase, while ɛNd values are shifted from the dissolved Nd river endmember (−8.9) to values typical of river suspended matter (−10.6). Combining a Nd isotope mass balance with apparent radium isotope ages of estuarine waters suggests a rapid (3 weeks) and globally significant Nd release by dissolution of lithogenic suspended sediments.
Neodymium isotopes are tracers for past and present ocean circulation and biogeochemistry. 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C.</au><au>Sonke, Jeroen E.</au><au>Chmeleff, Jérôme</au><au>van Beek, Pieter</au><au>Souhaut, Marc</au><au>Boaventura, Geraldo</au><au>Seyler, Patrick</au><au>Jeandel, Catherine</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rapid neodymium release to marine waters from lithogenic sediments in the Amazon estuary</atitle><jtitle>Nature communications</jtitle><stitle>Nat Commun</stitle><addtitle>Nat Commun</addtitle><date>2015-07-09</date><risdate>2015</risdate><volume>6</volume><issue>1</issue><spage>7592</spage><epage>7592</epage><pages>7592-7592</pages><artnum>7592</artnum><issn>2041-1723</issn><eissn>2041-1723</eissn><abstract>Rare earth element (REE) concentrations and neodymium isotopic composition (ɛNd) are tracers for ocean circulation and biogeochemistry. Although models suggest that REE release from lithogenic sediment in river discharge may dominate all other REE inputs to the oceans, the occurrence, mechanisms and magnitude of such a source are still debated. Here we present the first simultaneous observations of dissolved (<0.45 μm), colloidal and particulate REE and ɛNd in the Amazon estuary. A sharp drop in dissolved REE in the low-salinity zone is driven by coagulation of colloidal matter. At mid-salinities, total dissolved REE levels slightly increase, while ɛNd values are shifted from the dissolved Nd river endmember (−8.9) to values typical of river suspended matter (−10.6). Combining a Nd isotope mass balance with apparent radium isotope ages of estuarine waters suggests a rapid (3 weeks) and globally significant Nd release by dissolution of lithogenic suspended sediments.
Neodymium isotopes are tracers for past and present ocean circulation and biogeochemistry. Here, the authors combine observations of neodymium and radium isotopes in the Amazon estuary and show that the rapid release of neodymium from river suspended sediments leaves a strong imprint on coastal sea water.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>26158849</pmid><doi>10.1038/ncomms8592</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0003-3390-0614</orcidid><orcidid>https://orcid.org/0000-0002-4915-4719</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 704/106/47 704/2151/2738 Earth Sciences Humanities and Social Sciences Hydrology multidisciplinary Science Science (multidisciplinary) Sciences of the Universe |
| title | Rapid neodymium release to marine waters from lithogenic sediments in the Amazon estuary |
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