{"refrec":{"BRefID":350014,"RR":"<b>Montagna, P.; Colin, C.; Frank, M.; Störling, T.; Tanhua, T.; Rijkenberg, M.J.A.; Taviani, M.; Schroeder, K.; Chiggiato, J.; Gao, G.; Dapoigny, A.; Goldstein, S.L.</b> (2022). Dissolved neodymium isotopes in the Mediterranean Sea. <i>Geochim. Cosmochim. Acta 322</i>: 143-169. <a href=\"https://dx.doi.org/10.1016/j.gca.2022.01.005\" target=\"_blank\">https://dx.doi.org/10.1016/j.gca.2022.01.005</a>","BEntID":347709,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Geochim. Cosmochim. Acta 322</i>: 143-169. <a href=\"https://dx.doi.org/10.1016/j.gca.2022.01.005\" target=\"_blank\">https://dx.doi.org/10.1016/j.gca.2022.01.005</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Montagna, P.; Colin, C.; Frank, M.; Störling, T.; Tanhua, T.; Rijkenberg, M.J.A.; Taviani, M.; Schroeder, K.; Chiggiato, J.; Gao, G.; Dapoigny, A.; Goldstein, S.L.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Montagna, P. <i>et al.</i>","Englishabstract":"<p>    The neodymium    <a        href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/isotopic-composition\"        title=\"Learn more about isotopic composition from ScienceDirect's AI-generated Topic Pages\"    >        isotopic composition    </a>    (ε<sub>Nd</sub>) of seawater is one of the most important geochemical    tracers to investigate water mass provenance, which can also serve as a    proxy to reconstruct past variations in ocean circulation.    <a        href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/neodymium-isotope\"        title=\"Learn more about Nd isotopes from ScienceDirect's AI-generated Topic Pages\"    >        Nd isotopes    </a>    have recently also been used to reconstruct past circulation changes in theMediterranean Sea on different time scales. However, the modern seawater ε    <sub>Nd</sub> dataset for the Mediterranean Sea, which these    reconstructions are based on, is limited and up to now only 160 isotopic    measurements are available for the entire basin. The lack of present-day    data also limits our understanding of the processes controlling the Nd    cycle and Nd isotopic distribution in this semi-enclosed basin. Here we    present new ε<sub>Nd</sub> data from 24 depth profiles covering all    Mediterranean sub-basins, which significantly increases the available    dataset in the Mediterranean Sea. The main goal of our study is to better    characterize the relationship between the dissolved Nd isotope    distributions and major water masses in the Mediterranean Sea and to    investigate the impact and relative importance of local non-conservative    modifications, which include input of riverine particles and waters,    aeolian-derived material and exchange with the sediments at    <a        href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/continental-shelf\"        title=\"Learn more about continental margins from ScienceDirect's AI-generated Topic Pages\"    >        continental margins    </a>    . This comprehensive ε<sub>Nd</sub> dataset reveals a clear ε<sub>Nd</sub>    –    <a        href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/salinity\"        title=\"Learn more about salinity from ScienceDirect's AI-generated Topic Pages\"    >        salinity    </a>    correlation and a zonal and depth gradient with ε<sub>Nd</sub>    systematically increasing from the western to the eastern Mediterranean    basin (average ε<sub>Nd</sub> = −8.8 ± 0.8 and −6.7 ± 1 for the entire    water column, respectively), reflecting the large-scale basin circulation.    We have evaluated the conservative ε<sub>Nd</sub> behaviour in theMediterranean Sea and quantified the non-conservative components of the ε    <sub>Nd</sub> signatures by applying an Optimum Multiparameter (OMP)    analysis and results from the Parametric Optimum Multiparameter (POMP)    analysis of Jullion et al. (2017). The results of the present study    combined with previously published Nd isotope values indicate that    dissolved ε<sub>Nd</sub> behaves overall conservatively in the open    Mediterranean Sea and show that its water masses are clearly    distinguishable by their Nd isotope signature. However, misfits between    measured and OMP- and POMP-derived ε<sub>Nd</sub> values exist in almost    all sub-basins, especially in the eastern Levantine Basin and Alboran Sea    at intermediate-deep depths, which can be explained by the influence of    detrital lithogenic ε<sub>Nd</sub> signatures through interaction with    highly radiogenic Nile sourced volcanic fractions and unradiogenic    sediments, respectively.</p><p>    The radiogenic signature acquired in the eastern Levantine Basin is carried    by the Levantine Intermediate Water and transferred conservatively to the    entire Mediterranean at intermediate depths. Our measured ε<sub>Nd</sub>    values and OMP- and POMP-derived results indicate that non-conservative    contributions originating from sediment sources are then propagated by    water mass circulation (with distinct preformed ε<sub>Nd</sub>) along the    Mediterranean Sea through    <a        href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/advection\"        title=\"Learn more about advection from ScienceDirect's AI-generated Topic Pages\"    >        advection    </a>    and conservative mixing. Mediterranean ε<sub>Nd</sub> effectively traces    the mixing between the different water masses in this semi-enclosed basin    and is a suitable water mass tracer.</p>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Dissolved neodymium isotopes in the Mediterranean Sea","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-02 01:32:10.976212","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Neodymium isotopes; Seawater; Mediterranean Sea","OtherDescriptors":null,"Notes":null,"AnaPub":2022,"MonPub":null,"DateUpdate":"2022-05-11","DateCreate":"2022-02-24","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000808062900009","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.gca.2022.01.005"},"refs":null,"anarec":{"AnaID":350014,"PubliDate":2022,"Pagination":"143-169","XtraPublOfAnaID":null,"ISBN":null,"Volume":"322","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42901,"SerRR":"Geochimica et Cosmochimica Acta. 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