F. Ritterbusch, J. S. Wang, X. Feng, S. Shackleton, M. Bender, E. Brook, J. Higgins, Z.-H. Jia, W. Jiang, Z.-T. Lu, J. P. Severinghaus, L.-T. Sun, G.-M. Yang, L. Zhao
{"title":"81Kr dating of 1 kg Antarctic ice","authors":"F. Ritterbusch, J. S. Wang, X. Feng, S. Shackleton, M. Bender, E. Brook, J. Higgins, Z.-H. Jia, W. Jiang, Z.-T. Lu, J. P. Severinghaus, L.-T. Sun, G.-M. Yang, L. Zhao","doi":"10.1038/s41467-025-59264-6","DOIUrl":null,"url":null,"abstract":"<p>Recovering earth’s climate history from ice cores requires reliable dating of the ice. <sup>81</sup>Kr is ideal for radiometric dating up to more than one million years, but the isotope is so rare that it has long been a challenge to apply <sup>81</sup>Kr dating on ice cores where sample size is limited. Here, we show <sup>81</sup>Kr dating of 1-kg ice-core samples from Taylor Glacier, Antarctica. This is made possible by an advance in <sup>81</sup>Kr detection with an all-optical realization of Atom Trap Trace Analysis. The achieved sample-size reduction facilitates <sup>81</sup>Kr dating of basal ice-core sections with direct implications for open questions in paleoclimatology, such as the evolution of glaciers on the Tibetan Plateau or the stability of the Greenland and West-Antarctic ice sheets.</p>","PeriodicalId":19066,"journal":{"name":"Nature Communications","volume":"42 1","pages":""},"PeriodicalIF":14.7000,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Communications","FirstCategoryId":"103","ListUrlMain":"https://doi.org/10.1038/s41467-025-59264-6","RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Recovering earth’s climate history from ice cores requires reliable dating of the ice. 81Kr is ideal for radiometric dating up to more than one million years, but the isotope is so rare that it has long been a challenge to apply 81Kr dating on ice cores where sample size is limited. Here, we show 81Kr dating of 1-kg ice-core samples from Taylor Glacier, Antarctica. This is made possible by an advance in 81Kr detection with an all-optical realization of Atom Trap Trace Analysis. The achieved sample-size reduction facilitates 81Kr dating of basal ice-core sections with direct implications for open questions in paleoclimatology, such as the evolution of glaciers on the Tibetan Plateau or the stability of the Greenland and West-Antarctic ice sheets.
期刊介绍：
Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.
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