Experimental investigation of thawing behavior of saline soils using resistivity method
Abstract Electrical resistivity method has been widely used to study permafrost and to monitor the process of freezing-thawing. However, a thorough understanding of the mechanism of electrical response during thawing is missing. In this study, we investigated the thawing behavior of saline soils in...
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Online Access: | http://dx.doi.org/10.1093/jge/gxae037 https://academic.oup.com/jge/advance-article-pdf/doi/10.1093/jge/gxae037/57056526/gxae037.pdf |
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croxfordunivpr:10.1093/jge/gxae037 2024-04-28T08:23:53+00:00 Experimental investigation of thawing behavior of saline soils using resistivity method Chen, Cihai Yang, Zhilong Deng, Yaping Ma, Haichun Qian, Jiazhong 2024 http://dx.doi.org/10.1093/jge/gxae037 https://academic.oup.com/jge/advance-article-pdf/doi/10.1093/jge/gxae037/57056526/gxae037.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ Journal of Geophysics and Engineering ISSN 1742-2140 Management, Monitoring, Policy and Law Industrial and Manufacturing Engineering Geology Geophysics journal-article 2024 croxfordunivpr https://doi.org/10.1093/jge/gxae037 2024-04-02T08:05:26Z Abstract Electrical resistivity method has been widely used to study permafrost and to monitor the process of freezing-thawing. However, a thorough understanding of the mechanism of electrical response during thawing is missing. In this study, we investigated the thawing behavior of saline soils in the temperature range ∼-10 to 15 °C considering the effects of soil type and salinity. A total of nine experiments were performed with three soil types (silica sand, sandy soil and silt) and three salinities (0.01 S/m, 0.1 S/m and 1 S/m). The results show that resistivity variations with temperature can be divided into three stages. In Stage I, tortuosity and unfrozen water content play major roles in the decrease of resistivity. In Stage Ⅱ, which is an isothermal or near isothermal process, resistivity still decreases slightly due to the thawing of residual ice and pore water movement. In Stage III, ionic mobility plays an important impact on decreasing resistivity. In addition, the isothermal process is found to only occur in silica sand which can be explained by latent heat effect. Exponential and linear models linking temperature with resistivity are used to fit the experimental data in Stage I and Stage III. The fitting parameter in different models shows great correlation with soil type and salinity. Furthermore, unfrozen water content below 0 °C is also estimated and uncertainty of estimation is analyzed. Article in Journal/Newspaper Ice permafrost Oxford University Press Journal of Geophysics and Engineering |
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Oxford University Press |
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croxfordunivpr |
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English |
topic |
Management, Monitoring, Policy and Law Industrial and Manufacturing Engineering Geology Geophysics |
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Management, Monitoring, Policy and Law Industrial and Manufacturing Engineering Geology Geophysics Chen, Cihai Yang, Zhilong Deng, Yaping Ma, Haichun Qian, Jiazhong Experimental investigation of thawing behavior of saline soils using resistivity method |
topic_facet |
Management, Monitoring, Policy and Law Industrial and Manufacturing Engineering Geology Geophysics |
description |
Abstract Electrical resistivity method has been widely used to study permafrost and to monitor the process of freezing-thawing. However, a thorough understanding of the mechanism of electrical response during thawing is missing. In this study, we investigated the thawing behavior of saline soils in the temperature range ∼-10 to 15 °C considering the effects of soil type and salinity. A total of nine experiments were performed with three soil types (silica sand, sandy soil and silt) and three salinities (0.01 S/m, 0.1 S/m and 1 S/m). The results show that resistivity variations with temperature can be divided into three stages. In Stage I, tortuosity and unfrozen water content play major roles in the decrease of resistivity. In Stage Ⅱ, which is an isothermal or near isothermal process, resistivity still decreases slightly due to the thawing of residual ice and pore water movement. In Stage III, ionic mobility plays an important impact on decreasing resistivity. In addition, the isothermal process is found to only occur in silica sand which can be explained by latent heat effect. Exponential and linear models linking temperature with resistivity are used to fit the experimental data in Stage I and Stage III. The fitting parameter in different models shows great correlation with soil type and salinity. Furthermore, unfrozen water content below 0 °C is also estimated and uncertainty of estimation is analyzed. |
format |
Article in Journal/Newspaper |
author |
Chen, Cihai Yang, Zhilong Deng, Yaping Ma, Haichun Qian, Jiazhong |
author_facet |
Chen, Cihai Yang, Zhilong Deng, Yaping Ma, Haichun Qian, Jiazhong |
author_sort |
Chen, Cihai |
title |
Experimental investigation of thawing behavior of saline soils using resistivity method |
title_short |
Experimental investigation of thawing behavior of saline soils using resistivity method |
title_full |
Experimental investigation of thawing behavior of saline soils using resistivity method |
title_fullStr |
Experimental investigation of thawing behavior of saline soils using resistivity method |
title_full_unstemmed |
Experimental investigation of thawing behavior of saline soils using resistivity method |
title_sort |
experimental investigation of thawing behavior of saline soils using resistivity method |
publisher |
Oxford University Press (OUP) |
publishDate |
2024 |
url |
http://dx.doi.org/10.1093/jge/gxae037 https://academic.oup.com/jge/advance-article-pdf/doi/10.1093/jge/gxae037/57056526/gxae037.pdf |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Journal of Geophysics and Engineering ISSN 1742-2140 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/jge/gxae037 |
container_title |
Journal of Geophysics and Engineering |
_version_ |
1797584513802436608 |