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dc.contributor.authorHayes, Christopher T.  Concept link
dc.contributor.authorCosta, Kassandra M.  Concept link
dc.contributor.authorAnderson, Robert F.  Concept link
dc.contributor.authorCalvo, Eva  Concept link
dc.contributor.authorChase, Zanna  Concept link
dc.contributor.authorDemina, Ludmila L.  Concept link
dc.contributor.authorDutay, Jean-Claude  Concept link
dc.contributor.authorGerman, Christopher R.  Concept link
dc.contributor.authorHeimbürger, Lars-Eric  Concept link
dc.contributor.authorJaccard, Samuel L.  Concept link
dc.contributor.authorJacobel, Allison W.  Concept link
dc.contributor.authorKohfeld, Karen E.  Concept link
dc.contributor.authorKravchishina, Marina  Concept link
dc.contributor.authorLippold, Jörg  Concept link
dc.contributor.authorMekik, Figen  Concept link
dc.contributor.authorMissiaen, Lise  Concept link
dc.contributor.authorPavia, Frank  Concept link
dc.contributor.authorPaytan, Adina  Concept link
dc.contributor.authorPedrosa-Pamies, Rut  Concept link
dc.contributor.authorPetrova, Mariia V.  Concept link
dc.contributor.authorRahman, Shaily  Concept link
dc.contributor.authorRobinson, Laura F.  Concept link
dc.contributor.authorRoy-Barman, Matthieu  Concept link
dc.contributor.authorSanchez-Vidal, Anna  Concept link
dc.contributor.authorShiller, Alan M.  Concept link
dc.contributor.authorTagliabue, Alessandro  Concept link
dc.contributor.authorTessin, Allyson C.  Concept link
dc.contributor.authorvan Hulten, Marco  Concept link
dc.contributor.authorZhang, Jing  Concept link
dc.date.accessioned2021-07-27T14:26:44Z
dc.date.available2021-07-27T14:26:44Z
dc.date.issued2021-03-21
dc.identifier.citationHayes, C. T., Costa, K. M., Anderson, R. F., Calvo, E., Chase, Z., Demina, L. L., Dutay, J., German, C. R., Heimburger-Boavida, L., Jaccard, S. L., Jacobel, A., Kohfeld, K. E., Kravchishina, M. D., Lippold, J., Mekik, F., Missiaen, L., Pavia, F. J., Paytan, A., Pedrosa-Pamies, R., Petrova, M., V., Rahman, S., Robinson, L. F., Roy-Barman, M., Sanchez-Vidal, A., Shiller, A., Tagliabue, A., Tessin, A. C., van Hulten, M., & Zhang, J. (2021). Global ocean sediment composition and burial flux in the deep sea. Global Biogeochemical Cycles, 35(4), e2020GB006769.en_US
dc.identifier.urihttps://hdl.handle.net/1912/27383
dc.description© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Hayes, C. T., Costa, K. M., Anderson, R. F., Calvo, E., Chase, Z., Demina, L. L., Dutay, J., German, C. R., Heimburger-Boavida, L., Jaccard, S. L., Jacobel, A., Kohfeld, K. E., Kravchishina, M. D., Lippold, J., Mekik, F., Missiaen, L., Pavia, F. J., Paytan, A., Pedrosa-Pamies, R., Petrova, M., V., Rahman, S., Robinson, L. F., Roy-Barman, M., Sanchez-Vidal, A., Shiller, A., Tagliabue, A., Tessin, A. C., van Hulten, M., & Zhang, J. Global ocean sediment composition and burial flux in the deep sea. Global Biogeochemical Cycles, 35(4), (2021): e2020GB006769, https://doi.org/10.1029/2020GB006769.en_US
dc.description.abstractQuantitative knowledge about the burial of sedimentary components at the seafloor has wide-ranging implications in ocean science, from global climate to continental weathering. The use of 230Th-normalized fluxes reduces uncertainties that many prior studies faced by accounting for the effects of sediment redistribution by bottom currents and minimizing the impact of age model uncertainty. Here we employ a recently compiled global data set of 230Th-normalized fluxes with an updated database of seafloor surface sediment composition to derive atlases of the deep-sea burial flux of calcium carbonate, biogenic opal, total organic carbon (TOC), nonbiogenic material, iron, mercury, and excess barium (Baxs). The spatial patterns of major component burial are mainly consistent with prior work, but the new quantitative estimates allow evaluations of deep-sea budgets. Our integrated deep-sea burial fluxes are 136 Tg C/yr CaCO3, 153 Tg Si/yr opal, 20Tg C/yr TOC, 220 Mg Hg/yr, and 2.6 Tg Baxs/yr. This opal flux is roughly a factor of 2 increase over previous estimates, with important implications for the global Si cycle. Sedimentary Fe fluxes reflect a mixture of sources including lithogenic material, hydrothermal inputs and authigenic phases. The fluxes of some commonly used paleo-productivity proxies (TOC, biogenic opal, and Baxs) are not well-correlated geographically with satellite-based productivity estimates. Our new compilation of sedimentary fluxes provides detailed regional and global information, which will help refine the understanding of sediment preservation.en_US
dc.description.sponsorshipThis study was supported by the Past Global Changes (PAGES) project, which in turn received support from the Swiss Academy of Sciences and the US-NSF. The work grew out of a 2018 workshop in Aix-Marseille, France, funded by PAGES, GEOTRACES, SCOR, US-NSF, Aix Marseille Université, and John Cantle Scientific, and the authors would like to acknowledge all attendees of this meeting. The authors acknowledge the participants of the 68th cruise of RV Akademik Mstislav Keldysh for helping acquire samples. Christopher T. Hayes acknowledges support from US-NSF awards 1658445 and 1737023. Some data compilation on Arctic shelf seas was supported by the Russian Science Foundation, grant number 20-17-00157. This work was also supported through project CRESCENDO (grant no. 641816, European Commission). Zanna Chase acknowledges support from the Australian Research Council’s Discovery Projects funding scheme (project DP180102357). Christopher R. German acknowledges US-NSF awards 1235248 and 1234827. Some colorbars used in the figures were designed by Kristen Thyng et al. (2016) and Patrick Rafter.en_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2020GB006769
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectbariumen_US
dc.subjectcarbon cycleen_US
dc.subjectmarine atlasen_US
dc.subjectmercuryen_US
dc.subjectopalen_US
dc.subjectsediment burialen_US
dc.titleGlobal ocean sediment composition and burial flux in the deep seaen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2020GB006769


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