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Isotopic characteristics of snow and its meltwater over the Barton Peninsula, Antarctica

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Cited 1 time in scopus
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Title
Isotopic characteristics of snow and its meltwater over the Barton Peninsula, Antarctica
Other Titles
남극 바톤반도의 눈과 용융수의 동위원소 특성
Authors
Lee, Jeonghoon
Hur, Soon Do
Lim, Hyoun Soo
Jung, Hyejung
Subject
Engineering; Geology
Keywords
Barton Peninsula in Antarctica; snow; Isotopes; snow and meltwater
Issue Date
2020-05
Citation
Lee, Jeonghoon, et al. 2020. "Isotopic characteristics of snow and its meltwater over the Barton Peninsula, Antarctica". COLD REGIONS SCIENCE AND TECHNOLOGY, 173(1): 102997-102997.
Abstract
The stable isotopic compositions of snow and meltwater are a very useful tool to investigate water provenances and to increase the accuracy of paleoclimate studies in glacial watershed systems. To better understand the factors that affect the isotopic compositions of snow and meltwater in the western Antarctic Peninsula, the isotopic compositions of snow/ice and meltwater from the Barton Peninsula in Antarctica were examined. The isotopic compositions of snow are more enriched than those of meltwater and the variability of the isotopic compositions decreases from snow to meltwater. The melting process changes the linear slope between two water isotopes, which is different from the meteoric water line. We observe that the isotopic compositions of snow are altered by tephra, which results in isotopically enriched snow that is covered by tephra. This tephra decreases the snow's albedo, and the increased energy that is absorbed by the snow surface increases the melting rate, which causes isotopic exchange between liquid water and ice. Hydrological processes, such as daily variations in the melting rate and contributions from groundwater/runoff to seawater, also affect the isotopic compositions of water over the Barton Peninsula. Our works imply that uncertainty caused by these variations should be considered when applying stable water isotopes in this area for water flowpath and paleoclimate study.
URI
https://repository.kopri.re.kr/handle/201206/11802
DOI
http://dx.doi.org/10.1016/j.coldregions.2020.102997
ISSN
2-s2.0-85078977141
Appears in Collections  
2020-2020, Investigating anthropogenic and natural characteristics of atmosphere-ice sheet exchanges using the international deep ice coring network (20-20) / Kang, Jung-Ho (PE20190)
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