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Hydrogeological characteristics of groundwater and surface water associated with two small lake systems on King George Island, Antarctica

Cited 1 time in wos
Cited 2 time in scopus
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Title
Hydrogeological characteristics of groundwater and surface water associated with two small lake systems on King George Island, Antarctica
Other Titles
남극 킹조지섬 두 개 호수 지하수의 수문학적 특성 비교
Authors
Kim, Jisun
Jeen, Sung-Wook
Lim, Hyoun Soo
Lee, Jeonghoon
Kim, Ok-Sun
Lee, Hyoungseok
Hong, Soon Gyu
Subject
Engineering; Geology; Water Resources
Keywords
Water cycle; Antarctica; Lake; Hydraulic conductivity; Groundwater flux; Isotope
Issue Date
2020-11
Citation
Kim, Jisun, et al. 2020. "Hydrogeological characteristics of groundwater and surface water associated with two small lake systems on King George Island, Antarctica". JOURNAL OF HYDROLOGY, 590(1): 125537-125549.
Abstract
Although groundwater is an important component of the water cycle in the polar regions, groundwater in Antarctica has been rarely studied. This study evaluated the physical and chemical characteristics of groundwater, surface water, and snow in two lakes in Barton peninsula, King George Island, Antarctica, with a particular focus on groundwater. Influxes/outfluxes of groundwater were measured using seepage meters, and hydraulic conductivities were calculated based on grain size analysis for the sediments. A total of 41 water samples were used to determine the chemical compositions and isotopic ratios of oxygen and hydrogen. The groundwater fluxes measured in one lake (referred to as “Lake A”) were 2.7x10-9 ~ -9.9x10-10 m/s and in a second lake (referred to as “Lake B”) were 2.2×10-9 ~ 3.0×10-9 m/s. This indicates that groundwater flux is highly dynamic in Lake A, whereas groundwater influx in Lake B is relatively stable. Hydraulic conductivity for the lake sediments ranged between 1.7x10-4 cm/s and 2.1x10-2 cm/s. Oxygen and hydrogen isotopic compositions followed the global meteoric water line (GMWL) and local meteoric water line (LMWL), indicating that groundwater and surface water in the study area originate from the atmosphere. The chemical composition of groundwater was distinguished from that of surface water and snow by higher concentrations of major anions (Cl, SO4, and alkalinity), major cations (Ca, Mg, K, and Na), and trace elements (Si, Li, Sr, Mn, Zn, and Cu), resulting from water-rock interactions. To the best of our knowledge, this is the first study to directly measure groundwater fluxes in lake systems in Antarctica, and to evaluate the characteristics of groundwater in the Barton Peninsula. It may therefore serve as a basis for studying the role of groundwater in the water cycle of Antarctica.
URI
https://repository.kopri.re.kr/handle/201206/11868
DOI
http://dx.doi.org/10.1016/j.jhydrol.2020.125537
Appears in Collections  
2020-2020, Ecophysiology of KGI terrestrial organisms to reveal mechanisms of adaptation to changing environment (20-20) / Lee, Hyoungseok (PE20170)
2020 Polar Academic Program (PE20900)
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