Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071276 |
Cosmogenic Al-26/Be-10 surface production ratio in Greenland | |
Corbett, Lee B.1; Bierman, Paul R.1; Rood, Dylan H.2; Caffee, Marc W.3,4; Lifton, Nathaniel A.3,4; Woodruff, Thomas E.3 | |
2017-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England |
英文摘要 | The assumed value for the cosmogenic Al-26/Be-10 surface production rate ratio in quartz is an important parameter for studies investigating the burial or subaerial erosion of long-lived surfaces and sediments. Recent models and data suggest that the production ratio is spatially variable and may be greater than originally thought. Here we present measured 26Al/10Be ratios for 24 continuously exposed bedrock and boulder surfaces spanning similar to 61-77 degrees N in Greenland. Empirical measurements, such as ours, include nuclides produced predominately by neutron-induced spallation with percent-level contributions by muon interactions. The slope of a York regression line fit to our data is 7.3 +/- 0.3 (1 sigma), suggesting that the 26Al/10Be surface production ratio exceeds the commonly used value of 6.75, at least in the Arctic. A higher 26Al/10Be production ratio has implications for multinuclide cosmogenic isotope studies because it results in greater modeled burial durations and erosion rates. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396115000020 |
WOS关键词 | BE-10 PRODUCTION-RATE ; PRODUCTION-RATE CALIBRATION ; NUCLIDE PRODUCTION-RATES ; IN-SITU ; ICE-SHEET ; BAFFIN-ISLAND ; WESTERN GREENLAND ; GLACIAL HISTORY ; LAST RECESSION ; EROSION RATES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/28461 |
专题 | 气候变化 |
作者单位 | 1.Univ Vermont, Dept Geol, Burlington, VT 05405 USA; 2.Imperial Coll London, Dept Earth Sci & Engn, London, England; 3.Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA; 4.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA |
推荐引用方式 GB/T 7714 | Corbett, Lee B.,Bierman, Paul R.,Rood, Dylan H.,et al. Cosmogenic Al-26/Be-10 surface production ratio in Greenland[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(3). |
APA | Corbett, Lee B.,Bierman, Paul R.,Rood, Dylan H.,Caffee, Marc W.,Lifton, Nathaniel A.,&Woodruff, Thomas E..(2017).Cosmogenic Al-26/Be-10 surface production ratio in Greenland.GEOPHYSICAL RESEARCH LETTERS,44(3). |
MLA | Corbett, Lee B.,et al."Cosmogenic Al-26/Be-10 surface production ratio in Greenland".GEOPHYSICAL RESEARCH LETTERS 44.3(2017). |
条目包含的文件 | 条目无相关文件。 |
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