Effects of remediation reagents and rainfall on self-potential signals: A case study
In this study, the self-potential (SP) method was used for the continuous monitoring of naturally occurring electric potential differences at a soil and groundwater contamination site in Southern Taiwan from August to October 2015. At this field site, we set two perpendicular survey lines with 25 po...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer
2020-08-01
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| Series: | Terrestrial, Atmospheric and Oceanic Sciences |
| Online Access: |
http://tao.cgu.org.tw/media/k2/attachments/v314p437.pdf
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| _version_ | 1818150193230512128 |
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| author | Yung-Chieh Chuang Chien-Chih Chen Tzu-Pin Wang Tien-Hsing Tung Yao-Tsung Chen Su-Tien Lin Ching-Jen Ho |
| author_facet | Yung-Chieh Chuang Chien-Chih Chen Tzu-Pin Wang Tien-Hsing Tung Yao-Tsung Chen Su-Tien Lin Ching-Jen Ho |
| author_sort | Yung-Chieh Chuang |
| collection | DOAJ |
| description | In this study, the self-potential (SP) method was used for the continuous monitoring of naturally occurring electric potential differences at a soil and groundwater contamination site in Southern Taiwan from August to October 2015. At this field site, we set two perpendicular survey lines with 25 potential electrodes for daily measurements. The hourly SP medians of each day were averaged for the inversion of the 85-m long north-south (line I) and 35-m-long west-east (line II) SP tomographies (SPTs). The results are as follows: First, the regional groundwater flow direction was found to be in the north-northeast direction according to the distribution of electric potentials in the SPTs. The rainfall effects and consequent SP response were analyzed, which revealed enhanced regional positive and negative potentials in the SPTs, with a strength of up to -100 mV. In addition, effects of remediation reagent injection were monitored from 13 to 18 October; the results showed increased local potential in the two SPTs. Finally, we assessed the movement of the isopotential lines within a specific distance and determined the apparent velocity of groundwater to be 3.24 ± 0.38 and 0.57 ± 0.08 m day-1 through the dissipation of rainfall effects and local potential increases because of the injection. |
| first_indexed | 2024-12-11T13:19:02Z |
| format | Article |
| id | doaj.art-597e6a7574bb41908ae7b6887f09c4ca |
| institution | Directory Open Access Journal |
| issn | 1017-0839 2311-7680 |
| language | English |
| last_indexed | 2024-12-11T13:19:02Z |
| publishDate | 2020-08-01 |
| publisher | Springer |
| record_format | Article |
| series | Terrestrial, Atmospheric and Oceanic Sciences |
| spelling | doaj.art-597e6a7574bb41908ae7b6887f09c4ca2022-12-22T01:05:55ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802020-08-0131443745110.3319/TAO.2019.11.04.01Effects of remediation reagents and rainfall on self-potential signals: A case studyYung-Chieh ChuangChien-Chih ChenTzu-Pin WangTien-Hsing TungYao-Tsung ChenSu-Tien LinChing-Jen HoIn this study, the self-potential (SP) method was used for the continuous monitoring of naturally occurring electric potential differences at a soil and groundwater contamination site in Southern Taiwan from August to October 2015. At this field site, we set two perpendicular survey lines with 25 potential electrodes for daily measurements. The hourly SP medians of each day were averaged for the inversion of the 85-m long north-south (line I) and 35-m-long west-east (line II) SP tomographies (SPTs). The results are as follows: First, the regional groundwater flow direction was found to be in the north-northeast direction according to the distribution of electric potentials in the SPTs. The rainfall effects and consequent SP response were analyzed, which revealed enhanced regional positive and negative potentials in the SPTs, with a strength of up to -100 mV. In addition, effects of remediation reagent injection were monitored from 13 to 18 October; the results showed increased local potential in the two SPTs. Finally, we assessed the movement of the isopotential lines within a specific distance and determined the apparent velocity of groundwater to be 3.24 ± 0.38 and 0.57 ± 0.08 m day-1 through the dissipation of rainfall effects and local potential increases because of the injection. http://tao.cgu.org.tw/media/k2/attachments/v314p437.pdf |
| spellingShingle | Yung-Chieh Chuang Chien-Chih Chen Tzu-Pin Wang Tien-Hsing Tung Yao-Tsung Chen Su-Tien Lin Ching-Jen Ho Effects of remediation reagents and rainfall on self-potential signals: A case study Terrestrial, Atmospheric and Oceanic Sciences |
| title | Effects of remediation reagents and rainfall on self-potential signals: A case study |
| title_full | Effects of remediation reagents and rainfall on self-potential signals: A case study |
| title_fullStr | Effects of remediation reagents and rainfall on self-potential signals: A case study |
| title_full_unstemmed | Effects of remediation reagents and rainfall on self-potential signals: A case study |
| title_short | Effects of remediation reagents and rainfall on self-potential signals: A case study |
| title_sort | effects of remediation reagents and rainfall on self potential signals a case study |
| url |
http://tao.cgu.org.tw/media/k2/attachments/v314p437.pdf
|
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