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Time-Lapse Electrical Resistivity Structures for the Active Layer of Permafrost Terrain at the King Sejong Station: Correlation Interpretation with Vegetation and Meteorological Data

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Title
Time-Lapse Electrical Resistivity Structures for the Active Layer of Permafrost Terrain at the King Sejong Station: Correlation Interpretation with Vegetation and Meteorological Data
Other Titles
세종과학기지 주변 영구동토의 활동층에 대한 시간경과 전기비저항자료의 해석: 기상 및 식생 자료와의 연계해석
Authors
Kim, KwanSoo
Lee, Joohan
Lee, Eungsang
Ju, Hyeon Tae
Hyun, Chang-Uk
Park, Sang-Jong
Kim, Ok-Sun
Lee, Sun-Joong
Kim, Ji-Soo
Subject
Geology
Keywords
time-lapse electrical resistivity; active layer; permafrost; King Sejong Station; ground temperature
Issue Date
2020-08
Citation
Kim, KwanSoo, et al. 2020. "Time-Lapse Electrical Resistivity Structures for the Active Layer of Permafrost Terrain at the King Sejong Station: Correlation Interpretation with Vegetation and Meteorological Data". 자원환경지질, 53(4): 413-423.
Abstract
Over the wide area, King Sejong Station and the nearby land are uncovered with snow and ice conditions. Therefore, the active layer on the permafrost has been formed to be much thicker than the other Antarctica region. Electrical resistivity survey of Wenner and dipole-dipole arrays was undertaken at a series of time in the freezing season at the King Sejong Station to delineate subsurface structure and to monitor active layer in permafrost terrain. Time-lapse resistivity structures are well in terms of the vegetation distribution, ground surface temperature, and snow depth. Horizontal high resistivity belt(>1826 Ωm) at very shallow depth is thickening with the lapse of time, probably caused by the freezing of the water in the pore spaces with decrease of ground temperature. Subsurface structures for the area of low snow-cover and vegetated zone area are comprised of 0~0.5 m deep high-resistive gravel-rich soil, 0.5~3 m deep low-resistive active layer, and the underlying permafrost. In contrast, the unvegetated area and high snow-buildup is characterized with high resistivities larger than approximately 2000 Ωm due to freezing of the soil throughout the year. Data interpretation and correlation schemes explored in this paper can be applied to confirm the active layer, which is expected to get thinner in additional survey during the thawing season.
URI
https://repository.kopri.re.kr/handle/201206/11869
DOI
http://dx.doi.org/10.9719/EEG.2020.53.4.413
Appears in Collections  
2020-2020, Ecophysiology of KGI terrestrial organisms to reveal mechanisms of adaptation to changing environment (20-20) / Lee, Hyoungseok (PE20170)
2020-2020, Research on Antarctic ice bed topography (BEDMAP) through the development of aviation exploration systems (20-20) / Lee, Joohan (PE20050)
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