{"refrec":{"BRefID":365781,"RR":"<b>Varma, D.; Hättig, K.; van der Meer, M.T.J.; Reichart, G.-J.; Schouten, S.</b> (2023). Constraining water depth influence on organic paleotemperature proxies using sedimentary archives. <i>Paleoceanography and Paleoclimatology 38(6)</i>. <a href=\"https://dx.doi.org/10.1029/2022pa004533\" target=\"_blank\">https://dx.doi.org/10.1029/2022pa004533</a>","BEntID":363503,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Paleoceanography and Paleoclimatology 38(6)</i>. <a href=\"https://dx.doi.org/10.1029/2022pa004533\" target=\"_blank\">https://dx.doi.org/10.1029/2022pa004533</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Varma, D.; Hättig, K.; van der Meer, M.T.J.; Reichart, G.-J.; Schouten, S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Varma, D. <i>et al.</i>","Englishabstract":" The TEX <sub>86</sub> paleothermometer has been  extensively used to    reconstruct past sea water temperatures, but it remains  unclear which    export depths the proxy represents. Here we used a novel approach  to better    constrain the proxy recording depths by investigating paleotemperature    proxies (TEX<sub>86</sub>, X, RI−OH and RI−OH′) from two pairs of proximal    (<12 km apart) cores from Chilean and Angola margins, respectively.    These cores are from steep continental slopes and lower shelves, which leads    to  a substantial difference in water depth between them despite being    closely  located. Surprisingly, the deep and the shallow X records at the    Chilean margin show dissimilarities, in contrast to the similar records from    the Angola margin, which may be due to post-depositional alteration at the    former sites. In contrast, the TEX <sub>86</sub> records were statistically    indistinguishable between the sites at both the locations, even though the    GDGT  [2]/[3] ratio suggests GDGTs derived from potentially different    archaeal  communities residing at different depths. A short-lived difference    between the  TEX <sub>86</sub> records is observed during the last glacial    period at the  Angola margin, possibly due to a contribution of Antarctic    Intermediate Waters  to the deep site. Modelling suggests that the TEX <sub>    86</sub> source  signal at our core sites reaches its peak abundance at    water depths shallower  than 350 m. The RI−OH and RI−OH′ records show    similar variability as the  TEX <sub>86</sub> records, although regional    differences in their absolute  temperature estimates exist. Our approach    using proximal sediment cores at  steep slopes appears useful to constrain    the export depth of organic proxy  signals for paleo-reconstructions.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Constraining water depth influence on organic paleotemperature proxies using sedimentary archives","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"TEX86; GDGT; OH-GDGT; BAYSPAR; GDGT [2]/[3]; UK'37","OtherDescriptors":null,"Notes":null,"AnaPub":2023,"MonPub":null,"DateUpdate":"2023-07-20","DateCreate":"2023-07-20","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001005357100001","VABBcode":null,"OpenAcc":1,"DOI":"10.1029/2022pa004533"},"refs":null,"anarec":{"AnaID":365781,"PubliDate":2023,"Pagination":null,"XtraPublOfAnaID":null,"ISBN":null,"Volume":"38","Issue":"6","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":292301,"SerRR":"Paleoceanography and Paleoclimatology. American Geophysical Union: Washington DC.  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