{"title":"Seasonal variations in the origin of lead in snow at Dye 3, Greenland","authors":"K.J.R Rosman , W Chisholm , C.F Boutron , J.-P Candelone , J.-L Jaffrezo , C.I Davidson","doi":"10.1016/S0012-821X(98)00098-3","DOIUrl":null,"url":null,"abstract":"<div><p><span><span>The isotopic composition and concentration of lead has been measured in fresh and slightly aged snow collected at Dye 3 in southern Greenland during one full year. The lead concentration displayed large variations ranging from 14–3016 pg/g in April (spring) to 3–6 pg/g in September (summer) while the </span>isotopic ratios changed in regular manner during the year. The </span><sup>206</sup>Pb/<sup>207</sup>Pb ratios were ∼1.15 from spring to mid-summer snow, and increased in late summer to early autumn, reaching ∼1.20 in winter. These isotopic data indicate that the lead in the autumn to winter snow originated in North America, while that in spring to mid-summer snow is from Eurasia.</p></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"160 3","pages":"Pages 383-389"},"PeriodicalIF":4.8000,"publicationDate":"1998-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0012-821X(98)00098-3","citationCount":"40","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Earth and Planetary Science Letters","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0012821X98000983","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 40
Abstract
The isotopic composition and concentration of lead has been measured in fresh and slightly aged snow collected at Dye 3 in southern Greenland during one full year. The lead concentration displayed large variations ranging from 14–3016 pg/g in April (spring) to 3–6 pg/g in September (summer) while the isotopic ratios changed in regular manner during the year. The 206Pb/207Pb ratios were ∼1.15 from spring to mid-summer snow, and increased in late summer to early autumn, reaching ∼1.20 in winter. These isotopic data indicate that the lead in the autumn to winter snow originated in North America, while that in spring to mid-summer snow is from Eurasia.
期刊介绍：
Earth and Planetary Science Letters (EPSL) is a leading journal for researchers across the entire Earth and planetary sciences community. It publishes concise, exciting, high-impact articles ("Letters") of broad interest. Its focus is on physical and chemical processes, the evolution and general properties of the Earth and planets - from their deep interiors to their atmospheres. EPSL also includes a Frontiers section, featuring invited high-profile synthesis articles by leading experts on timely topics to bring cutting-edge research to the wider community.
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