KOPRI Repository

Time-lapse electrical resistivity tomography and ground penetrating radar mapping of the active layer of permafrost across a snow fence in Cambridge Bay, Nunavut Territory, Canada: correlation interpretation using vegetation and meteorological data

Cited 2 time in wos
Cited 4 time in scopus
Title
Time-lapse electrical resistivity tomography and ground penetrating radar mapping of the active layer of permafrost across a snow fence in Cambridge Bay, Nunavut Territory, Canada: correlation interpretation using vegetation and meteorological data
Other Titles
지구물리탐사 방법을 이용한 인공 강설변화에 따른 활동층 시간경과 측정: 식생 및 기상자료와의 연계해석
Authors
Kim, KwanSoo
Lee, Joohan
Ju, Hyeontae
Jung, Ji Young
Chae, Namyi
Chi, Junhwa
Kwon, Min Jung
Lee, Bang Yong
Wagner, Johann
Kim, Ji-Soo
Subject
Geology
Keywords
snow fencegeophysical surveyactive layernormalized difference vegetation index (NDVI)permafrost
Issue Date
2021-12
Citation
Kim, KwanSoo, et al. 2021. "Time-lapse electrical resistivity tomography and ground penetrating radar mapping of the active layer of permafrost across a snow fence in Cambridge Bay, Nunavut Territory, Canada: correlation interpretation using vegetation and meteorological data". GEOSCIENCES JOURNAL, 25(6): 877-890.
Abstract
The active layer thickness (ALT) is a key parameter for permafrost studies. Changes in the ALT are affected mainly by air and ground temperatures, physical and thermal properties of the surface and subsurface materials, soil moisture, vegetation, and the duration and thickness of snow cover. Ground penetrating radar (GPR) and electrical resistivity tomography (ERT) were employed across a snow fence during the thawing season to delineate and monitor the active layer of permafrost in Cambridge Bay, Nunavut, Canada. The variation of the ALT is well captured by the high-resolution time-lapse radargram. At the position of the fence, the active layer thickens over the thawing period from 0.5 m depth at the beginning to 1.0 m depth at the end. The active layer is thicker in the pre-fence area (C zone) than in the post-fence area (H zone). As the air temperature increases with time, the difference in thickness between the two zones decreases, eventually becoming almost equal. Changes in the ALT are represented in the ERT by low resistivities (< 200 omega m), which decrease gradually with time. This occurs most significantly in the H zone due to the rapidly increasing temperature in the absence of snow cover. The electrical resistivity structure of the active layer is well correlated with the vegetation activity, as measured by the normalized difference vegetation index, air/ground temperatures, soil moisture, snow cover, and snow accumulation controlled by the fence. Geophysical data interpretation and correlation schemes with vegetation and meteorological data explored in this paper can be applied to monitor the active layer, which is expected to thin during the freezing season.
URI
https://repository.kopri.re.kr/handle/201206/13616
DOI
http://dx.doi.org/10.1007/s12303-021-0021-7
Type
Article
Station
기타()
Indexed
SCIE
Appears in Collections  
2021-2021, The Korean Route Exploration and Technology Development for Antarctic Inland Researches (21-21) / Lee, Khanghyun (PE21080)
2021-2021, Interrelationship Investigation and Comprehensive Monitoring based on Permafrost-Atmospheric Environment (21-21) / Lee, Bang Yong (PN21011)
Files in This Item

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse