Climate Change Data Portal
| Isotope composition of pingo ice core in the Evoyakha River valley, North-West Siberia | |
| Vasil'chuk Yu.K.; Budantseva N.A.; Vasil'chuk A.C.; Yoshikawa K.; Podborny Ye.Ye.; Chizhova Ju.N. | |
| 发表日期 | 2014 |
| ISSN | 15607496 |
| 卷号 | 18期号:4 |
| 英文摘要 | Ice core of Pestsovoye pingo in the Evoyakha River valley in North-West Siberia has been studied. Thickness of the pingo ice is more than 15 m. The δ18O value of the pingo ice varies from -11.6 to -15.8 %, δD from -93.2 to -123.0 %. Comparison with isotope data of ice core of Weather pingo (Alaska) has been carried out. In Weather pingo ice δ18O values range from -15.5 to -22.0 %, δD values change from -132 to -170 %. Both isotope profiles of pingo ice are contrasting and arcuate-shaped as a result of isotope fractionation during freezing of sub-pingo waters in closed system. Fractionation leads to isotopic contrast of ice: by 4-6 % of δ18O and by 20-25 % of δD values. Radiocarbon dating of the covering peat at Pestsovoye pingo evidences that the heaving occurred in two stages. At the first stage the heaving began at about 5 kyr BP in the distal part of the mound. At the second stage about 2.5 kyr BP the heaving recommenced actively in the central part of the pingo. The heaving rate was very high - more than 2-3 cm per year. As a result a pingo of 17 m high has been formed. |
| 英文关键词 | Deuterium; Intrusive ice; North-West Siberia; Oxygen isotope; Pingo; Radiocarbon age |
| 学科领域 | age determination; deuterium; ice core; ice thickness; isotopic composition; isotopic fractionation; oxygen isotope; radiocarbon dating; Alaska; Evoyakha River; Siberia; United States |
| 语种 | 英语 |
| scopus关键词 | age determination; deuterium; ice core; ice thickness; isotopic composition; isotopic fractionation; oxygen isotope; radiocarbon dating; Alaska; Evoyakha River; Siberia; United States |
| 来源期刊 | Earth's Cryosphere
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/120180 |
| 作者单位 | Lomonosov Moscow State University, Department of Geography and Geology, Leninskie Gory, 1, Moscow, 119991, Russian Federation; Water and Environmental Research Center, Institute of Northern Engineering, University of Alaska, Fairbanks, Alaska, United States; Center Hydroecological Research, Nalichnaya str., 16a, Saint-Petersburg, 199406, Russian Federation |
| 推荐引用方式 GB/T 7714 | Vasil'chuk Yu.K.,Budantseva N.A.,Vasil'chuk A.C.,et al. Isotope composition of pingo ice core in the Evoyakha River valley, North-West Siberia[J],2014,18(4). |
| APA | Vasil'chuk Yu.K.,Budantseva N.A.,Vasil'chuk A.C.,Yoshikawa K.,Podborny Ye.Ye.,&Chizhova Ju.N..(2014).Isotope composition of pingo ice core in the Evoyakha River valley, North-West Siberia.Earth's Cryosphere,18(4). |
| MLA | Vasil'chuk Yu.K.,et al."Isotope composition of pingo ice core in the Evoyakha River valley, North-West Siberia".Earth's Cryosphere 18.4(2014). |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
