Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1816468116 |
Dating glacier ice of the last millennium by quantum technology | |
Feng, Zhongyi1; Bohleber, Pascal2,3; Ebser, Sven1; Ringena, Lisa1; Schmidt, Maximilian1,2; Kersting, Arne2; Hopkins, Philip2; Hoffmann, Helene2,4; Fischer, Andrea3; Aeschbach, Werner2,5; Oberthaler, Markus K.1 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:18页码:8781-8786 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Austria |
英文摘要 | Radiometric dating with Ar-39 covers a unique time span and offers key advances in interpreting environmental archives of the last millennium. Although this tracer has been acknowledged for decades, studies so far have been limited by the low abundance and radioactivity, thus requiring huge sample sizes. Atom trap trace analysis, an application of techniques from quantum physics such as laser cooling and trapping, allows us to reduce the sample volume by several orders of magnitude compared with conventional techniques. Here we show that the adaptation of this method to 39Ar is now available for glaciological applications, by demonstrating the entire process chain for dating of alpine glacier ice by argon trap trace analysis (ArTTA). Ice blocks as small as a few kilograms are sufficient and have been obtained at two artificial glacier caves. Importantly, both sites offer direct access to the stratigraphy at the glacier base and validation against existing age constraints. The ice blocks obtained at Chli Titlis glacier at 3,030 m asl (Swiss Alps) have been dated by state-of-the-art microradiocarbon analysis in a previous study. The unique finding of a bark fragment and a larch needle within the ice of Schaufelferner glacier at 2,870 m asl (Stubai Alps, Austria) allows for conventional radiocarbon dating. At both sites the existing age information based on radiocarbon dating and visual stratigraphy corroborates the 39Ar ages. With our results, we establish argon trap trace analysis as the key to decipher so far untapped glacier archives of the last millennium. |
英文关键词 | glacier ice dating argon-39 atom trap trace analysis |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000466446500026 |
WOS关键词 | NOBLE-GAS RADIONUCLIDES ; AGE ; CALIBRATION ; TRACER ; FIRN |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205104 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Heidelberg Univ, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany; 2.Heidelberg Univ, Inst Environm Phys, D-69120 Heidelberg, Germany; 3.Austrian Acad Sci, Inst Interdisciplinary Mt Res, A-6020 Innsbruck, Austria; 4.Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, D-27570 Bremerhaven, Germany; 5.Heidelberg Univ, Heidelberg Ctr Environm, D-69120 Heidelberg, Germany |
推荐引用方式 GB/T 7714 | Feng, Zhongyi,Bohleber, Pascal,Ebser, Sven,et al. Dating glacier ice of the last millennium by quantum technology[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(18):8781-8786. |
APA | Feng, Zhongyi.,Bohleber, Pascal.,Ebser, Sven.,Ringena, Lisa.,Schmidt, Maximilian.,...&Oberthaler, Markus K..(2019).Dating glacier ice of the last millennium by quantum technology.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(18),8781-8786. |
MLA | Feng, Zhongyi,et al."Dating glacier ice of the last millennium by quantum technology".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.18(2019):8781-8786. |
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