View : 664 Download: 0
Isotopic characteristics of snow and its meltwater over the Barton Peninsula, Antarctica
- Title
- Isotopic characteristics of snow and its meltwater over the Barton Peninsula, Antarctica
- Authors
- Lee, Jeonghoon; Hur, Soon Do; Lim, Hyoun Soo; Jung, Hyejung
- Ewha Authors
- 이정훈
- SCOPUS Author ID
- 이정훈
- Issue Date
- 2020
- Journal Title
- COLD REGIONS SCIENCE AND TECHNOLOGY
- ISSN
- 0165-232X
1872-7441
- Citation
- COLD REGIONS SCIENCE AND TECHNOLOGY vol. 173
- Publisher
- ELSEVIER
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- 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.
- DOI
- 10.1016/j.coldregions.2020.102997
- Appears in Collections:
- 사범대학 > 과학교육과 > Journal papers
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML