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Subject

Temperature Effects in the Resistivity Monitoring at Embankment Dams
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저수지 전기비저항 모니터링에서의 온도효과

논문 기본 정보

Type
Academic journal
Author
Kim, Eun-Mi (강원대학교 지질.지구물리학부) Cho, In-Ky (강원대학교 지질.지구물리학부) Kim, Ki-Seog ([주]희송지오텍) Yong, Hwan-Ho (한국농어촌공사)
Journal
Korean Spciety of Earth and Exploration Geophysicists 지구물리와 물리탐사 지구물리와 물리탐사 제21권 제2호
Published
2018.1
Pages
82 - 93 (12page)

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Temperature Effects in the Resistivity Monitoring at Embankment Dams
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Abstract· Keywords

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Resistivity monitoring data at embankment dams are affected by the seasonal temperature variation. Especially when the seasonal temperature variation is large like Korea, the temperature effects may not be ignored in the longterm resistivity monitoring. Therefore, temperature effects can make it difficult to accurately interpret the resistivity monitoring data. In this study, through analyzing the time series of ground temperature collected at an embankment dam, ground temperature variations are calculated approximately. Then, based on the calculated temperature profile with depth, the inverted resistivity model of the embankment dam is corrected to remove the temperature effects. From these corrections, it was confirmed that the temperature effects are significant in the upper, superficial part of the dam, but can be ignored at depth. However, temperature correction based only on the temperature distribution in the dam body cannot remove the temperature effect thoroughly. To overcome this problem, the effect of temperature variation in the reservoir water seems to be incorporated together with the air temperature variation.

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