Journal article Open Access
Crocket, Kirsty; Hill, Emily; Abell, Richard; Johnson, Clare; Gary, Stefan; Brand, Tim; Hathorne, E.
<?xml version='1.0' encoding='utf-8'?> <resource xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://datacite.org/schema/kernel-4" xsi:schemaLocation="http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.1/metadata.xsd"> <identifier identifierType="URL">https://zenodo.org/record/1323738</identifier> <creators> <creator> <creatorName>Crocket, Kirsty</creatorName> <givenName>Kirsty</givenName> <familyName>Crocket</familyName> <affiliation>SAMS</affiliation> </creator> <creator> <creatorName>Hill, Emily</creatorName> <givenName>Emily</givenName> <familyName>Hill</familyName> <affiliation>SAMS</affiliation> </creator> <creator> <creatorName>Abell, Richard</creatorName> <givenName>Richard</givenName> <familyName>Abell</familyName> <affiliation>SAMS</affiliation> </creator> <creator> <creatorName>Johnson, Clare</creatorName> <givenName>Clare</givenName> <familyName>Johnson</familyName> <affiliation>SAMS</affiliation> </creator> <creator> <creatorName>Gary, Stefan</creatorName> <givenName>Stefan</givenName> <familyName>Gary</familyName> <affiliation>SAMS</affiliation> </creator> <creator> <creatorName>Brand, Tim</creatorName> <givenName>Tim</givenName> <familyName>Brand</familyName> <affiliation>SAMS</affiliation> </creator> <creator> <creatorName>Hathorne, E.</creatorName> <givenName>E.</givenName> <familyName>Hathorne</familyName> <affiliation>GEOMAR</affiliation> </creator> </creators> <titles> <title>Rare Earth Element distribution in the NE Atlantic: Evidence for benthic sources, longevity of the seawater signal, and biogeochemical cycling</title> </titles> <publisher>Zenodo</publisher> <publicationYear>2018</publicationYear> <dates> <date dateType="Issued">2018-04-30</date> </dates> <resourceType resourceTypeGeneral="Text">Journal article</resourceType> <alternateIdentifiers> <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/1323738</alternateIdentifier> </alternateIdentifiers> <relatedIdentifiers> <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.3389/fmars.2018.00147</relatedIdentifier> <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/atlas</relatedIdentifier> </relatedIdentifiers> <rightsList> <rights rightsURI="http://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights> <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights> </rightsList> <descriptions> <description descriptionType="Abstract"><p>Seawater rare earth element (REE) concentrations are increasingly applied to reconstruct</p> <p>water mass histories by exploiting relative changes in the distinctive normalised patterns.</p> <p>However, the mechanisms by which water masses gain their patterns are yet to be</p> <p>fully explained. To examine this, we collected water samples along the Extended Ellett</p> <p>Line (EEL), an oceanographic transect between Iceland and Scotland, and measured</p> <p>dissolved REE by offline automated chromatography (SeaFAST) and ICP-MS. The</p> <p>proximity to two continental boundaries, the incipient spring bloom coincident with the</p> <p>timing of the cruise, and the importance of deep water circulation in this climatically</p> <p>sensitive gateway region make it an ideal location to investigate sources of REE to</p> <p>seawater and the effects of vertical cycling and lateral advection on their distribution. The</p> <p>deep waters have REE concentrations closest to typical North Atlantic seawater and are</p> <p>dominated by lateral advection. Comparison to published seawater REE concentrations</p> <p>of the same water masses in other locations provides a first measure of the temporal</p> <p>and spatial stability of the seawater REE signal. We demonstrate the REE pattern is</p> <p>replicated for Iceland-Scotland OverflowWater (ISOW) in the Iceland Basin from adjacent</p> <p>stations sampled 16 years previously. A recently published Labrador Sea Water (LSW)</p> <p>dissolved REE signal is reproduced in the Rockall Trough but shows greater light and</p> <p>mid REE alteration in the Iceland Basin, possibly due to the dominant effect of ISOW</p> <p>and/or continental inputs. An obvious concentration gradient from seafloor sediments to</p> <p>the overlying water column in the Rockall Trough, but not the Iceland Basin, highlights</p> <p>release of light and mid REE from resuspended sediments and pore waters, possibly</p> <p>a seasonal effect associated with the timing of the spring bloom in each basin. The</p> <p>EEL dissolved oxygen minimum at the permanent pycnocline corresponds to positive</p> <p>heavy REE enrichment, indicating maximum rates of organic matter remineralisation</p> <p>and associated REE release. We tentatively suggest a bacterial role to account for the</p> <p>observed heavy REE deviations. This study highlights the need for fully constrained</p> <p>REE sources and sinks, including the temporary nature of some sources, to achieve</p> <p>a balanced budget of seawater REE.</p></description> </descriptions> <fundingReferences> <fundingReference> <funderName>European Commission</funderName> <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/501100000780</funderIdentifier> <awardNumber awardURI="info:eu-repo/grantAgreement/EC/H2020/678760/">678760</awardNumber> <awardTitle>A Trans-AtLantic Assessment and deep-water ecosystem-based Spatial management plan for Europe</awardTitle> </fundingReference> </fundingReferences> </resource>
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