{"refrec":{"BRefID":335871,"RR":"<b>Kuwahara, Y.; Yasukawa, K.; Fujinaga, K.; Nozaki, T.; Ohta, J.; Sato, H.; Kimura, J.-I.; Nakamura, K.; Yokoyama, Y.; Kato, K.</b> (2021). Rapid coupling between solid earth and ice volume during the Quaternary. <i>NPG Scientific Reports 11(1)</i>: 5695. <a href=\"https://dx.doi.org/10.1038/s41598-021-84448-7\" target=\"_blank\">https://dx.doi.org/10.1038/s41598-021-84448-7</a>","BEntID":332493,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>NPG Scientific Reports 11(1)</i>: 5695. <a href=\"https://dx.doi.org/10.1038/s41598-021-84448-7\" target=\"_blank\">https://dx.doi.org/10.1038/s41598-021-84448-7</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Kuwahara, Y.; Yasukawa, K.; Fujinaga, K.; Nozaki, T.; Ohta, J.; Sato, H.; Kimura, J.-I.; Nakamura, K.; Yokoyama, Y.; Kato, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Kuwahara, Y. <i>et al.</i>","Englishabstract":"The solid earth plays a major role in controlling Earth’s surface climate. Volcanic degassing of carbon dioxide (CO<sub>2</sub>) and silicate chemical weathering are known to regulate the evolution of climate on a geologic timescale (&gt; 10<sup>6</sup>&nbsp;yr), but the relationship between the solid earth and the shorter (&lt; 10<sup>5</sup>&nbsp;yr) fluctuations of Quaternary glacial–interglacial cycles is still under debate. Here we show that the seawater osmium isotope composition (<sup>187</sup>Os/<sup>188</sup>Os), a proxy for the solid earth’s response to climate change, has varied during the past 300,000&nbsp;years in association with glacial–interglacial cycles. Our marine Os isotope mass-balance simulation reveals that the observed <sup>187</sup>Os/<sup>188</sup>Os fluctuation cannot be explained solely by global chemical weathering rate changes corresponding to glacial–interglacial climate changes, but the fluctuation can be reproduced by taking account of short-term inputs of (1) radiogenic Os derived from intense weathering of glacial till during deglacial periods and (2) unradiogenic Os derived from enhanced seafloor hydrothermalism triggered by sea-level falls associated with increases of ice sheet volume. Our results constitute the first evidence that ice sheet recession and expansion during the Quaternary systematically and repetitively caused short-term (&lt; 10<sup>5</sup>&nbsp;yr) solid earth responses via chemical weathering of glacial till and seafloor magmatism. This finding implies that climatic changes on &lt; 10<sup>5</sup>&nbsp;yr timescales can provoke rapid feedbacks from the solid earth, a causal relationship that is the reverse of the longer-term (&gt; 10<sup>6</sup>&nbsp;yr) causality that has been conventionally considered.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Rapid coupling between solid earth and ice volume during the Quaternary","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-23 01:32:08.339534","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2021-03-26","DateCreate":"2021-03-26","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000629621400001","VABBcode":null,"OpenAcc":1,"DOI":"10.1038/s41598-021-84448-7"},"refs":null,"anarec":{"AnaID":335871,"PubliDate":2021,"Pagination":"5695","XtraPublOfAnaID":null,"ISBN":null,"Volume":"11","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":208093,"SerRR":"Scientific Reports (Nature Publishing Group). 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