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dc.contributor.authorKim, Ji-Hoon
dc.contributor.authorHong, Wei-Li
dc.contributor.authorTorres, Marta E.
dc.contributor.authorRyu, Jong-Sik
dc.contributor.authorKang, Moo-Hee
dc.contributor.authorHan, Dukki
dc.contributor.authorNam, Seung-Il
dc.contributor.authorHur, Jin
dc.contributor.authorKoh, Dong-Chan
dc.contributor.authorNiessen, Frank
dc.contributor.authorLee, Dong-Hun
dc.contributor.authorJang, Kwangchul
dc.contributor.authorBuchanan Rae, James William
dc.contributor.authorChen, Meilian
dc.date.accessioned2022-01-29T00:38:56Z
dc.date.available2022-01-29T00:38:56Z
dc.date.issued2021-07-29
dc.identifier.citationKim , J-H , Hong , W-L , Torres , M E , Ryu , J-S , Kang , M-H , Han , D , Nam , S-I , Hur , J , Koh , D-C , Niessen , F , Lee , D-H , Jang , K , Buchanan Rae , J W & Chen , M 2021 , ' A pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM) ' , Geochemistry, Geophysics, Geosystems , vol. 22 , no. 8 , e2021GC009750 . https://doi.org/10.1029/2021GC009750en
dc.identifier.issn1525-2027
dc.identifier.otherPURE: 275120079
dc.identifier.otherPURE UUID: 0fd5d055-ab6f-41d9-bee5-78108dc4d1ab
dc.identifier.otherRIS: urn:144B989494F99902F0350425A0B45F41
dc.identifier.otherORCID: /0000-0003-3904-2526/work/97885275
dc.identifier.otherScopus: 85113742864
dc.identifier.otherWOS: 000691021600020
dc.identifier.urihttp://hdl.handle.net/10023/24775
dc.descriptionThis work was supported bythe Korea Ministry of Science and ICT (GP2020-038), by the Korea Ministry of Oceans and Fisheries (NP2011-040 and 1525011795), and by the Korea Polar Research Institute (Grants No. PE20350). W.-L.H. acknowledges the supports from the ArcticSGD, a project supported by the Norway Grants and the EEA Grants (2019/34/H/ST10/00645). Additional funds were contributed by the AWI Research Program PACES-II Workpackage 3.1 and 3.2.en
dc.description.abstractThe response of Arctic Ocean biogeochemistry to subsurface flow driven by permafrost thaw is poorly understood. We present dissolved chloride and water isotopic data from the Chukchi Sea Shelf sediments that reveal the presence of a meteoric subsurface flow enriched in cations with a radiogenic Sr fingerprint. This subsurface fluid is also enriched in dissolved inorganic carbon and methane that bear isotopic compositions indicative of a carbon reservoir modified by reactions in a closed system. Such fluid characteristics are in stark contrast with those from other sites in the Chukchi Sea where the pore water composition shows no sign of meteoric input, but reflect typical biogeochemical reactions associated with early diagenetic sequences in marine sediment. The most likely source of the observed subsurface flow at the Chukchi Sea Shelf is from the degradation of permafrost that had extended to the shelf region during the Last Glacial Maximum. Our data suggest that the permafrost-driven subsurface flow most likely took place during the 2-3 oC warming in the Early Holocene Thermal Maximum (EHTM). This time scale is supported by numerical simulation of pore fluid profiles, which indicate that a minimum of several thousand years must have passed since the cessation of the subsurface methane-bearing fluid flow.
dc.format.extent20
dc.language.isoeng
dc.relation.ispartofGeochemistry, Geophysics, Geosystemsen
dc.rightsCopyright © 2021. American Geophysical Union. All Rights Reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1029/2021GC009750en
dc.subjectSubsurface meteoric fluid dischargeen
dc.subjectArctic element/carbon cycleen
dc.subjectPermafrosten
dc.subjectEHTMen
dc.subjectChukchi Seaen
dc.subjectGE Environmental Sciencesen
dc.subjectDASen
dc.subject.lccGEen
dc.titleA pulse of meteoric subsurface fluid discharging into the Chukchi Sea during the Early Holocene Thermal Maximum (EHTM)en
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews.Centre for Energy Ethicsen
dc.contributor.institutionUniversity of St Andrews.St Andrews Isotope Geochemistryen
dc.identifier.doihttps://doi.org/10.1029/2021GC009750
dc.description.statusPeer revieweden
dc.date.embargoedUntil2022-01-29


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