Hydraulic Tomography for Estimating the Diffusivity of Heterogeneous Aquifers Based on Groundwater Response to Tidal Fluctuation in an Artificial Island in Taiwan
This study investigated the hydraulic properties of the heterogeneous aquifers of an artificial island (Yunlin Offshore Industrial Park) in Taiwan. The research was based on the groundwater level response affected by tidal fluctuation using the hydraulic tomography (HT) to analyze the hydraulic diff...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2018/6046258 |
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| author | Jet-Chau Wen Hong-Ru Lin Tian-Chyi Jim Yeh Yu-Li Wang Keng-Li Lin Shao-Yang Huang |
| author_facet | Jet-Chau Wen Hong-Ru Lin Tian-Chyi Jim Yeh Yu-Li Wang Keng-Li Lin Shao-Yang Huang |
| author_sort | Jet-Chau Wen |
| collection | DOAJ |
| description | This study investigated the hydraulic properties of the heterogeneous aquifers of an artificial island (Yunlin Offshore Industrial Park) in Taiwan. The research was based on the groundwater level response affected by tidal fluctuation using the hydraulic tomography (HT) to analyze the hydraulic diffusivity (α). Specifically, the power spectrum ratio of groundwater and tidal fluctuations derived from the Gelhar solution was used to estimate α in homogeneous aquifers; this, however, could not be applied in the artificial island. Next, the spatial distribution of the groundwater level response affected by tidal fluctuation was analyzed and found to be irregular, proving the existence of hydrogeological heterogeneity in the artificial island. Furthermore, the results of the estimated α using the HT showed low error and high correlation, 0.41 m2/hr and 0.83, respectively, between the optimal estimated heterogeneous and reference α fields in the synthetic aquifer. Last, the HT was used in the real tested scenario. By comparing the predicted groundwater levels of the optimal estimated heterogeneous α field and the observed groundwater levels of the real aquifer, it was found that the correlation was higher than 0.99. Therefore, the HT can be used to obtain the optimal estimated heterogeneous α field in the artificial island. |
| format | Article |
| id | doaj-art-1a848857c9a046b3b51e32b00d313d4b |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-1a848857c9a046b3b51e32b00d313d4b2025-02-03T01:28:56ZengWileyGeofluids1468-81151468-81232018-01-01201810.1155/2018/60462586046258Hydraulic Tomography for Estimating the Diffusivity of Heterogeneous Aquifers Based on Groundwater Response to Tidal Fluctuation in an Artificial Island in TaiwanJet-Chau Wen0Hong-Ru Lin1Tian-Chyi Jim Yeh2Yu-Li Wang3Keng-Li Lin4Shao-Yang Huang5Department of Safety, Health and Environmental Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin, TaiwanDoctoral Program, Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology, Douliou, Yunlin, TaiwanDepartment of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, USADepartment of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, USADepartment of Environment, AECOM Taiwan Corporation, Kaohsiung, TaiwanResearch Center for Soil and Water Resources and Natural Disaster Prevention, National Yunlin University of Science and Technology, Douliou, Yunlin, TaiwanThis study investigated the hydraulic properties of the heterogeneous aquifers of an artificial island (Yunlin Offshore Industrial Park) in Taiwan. The research was based on the groundwater level response affected by tidal fluctuation using the hydraulic tomography (HT) to analyze the hydraulic diffusivity (α). Specifically, the power spectrum ratio of groundwater and tidal fluctuations derived from the Gelhar solution was used to estimate α in homogeneous aquifers; this, however, could not be applied in the artificial island. Next, the spatial distribution of the groundwater level response affected by tidal fluctuation was analyzed and found to be irregular, proving the existence of hydrogeological heterogeneity in the artificial island. Furthermore, the results of the estimated α using the HT showed low error and high correlation, 0.41 m2/hr and 0.83, respectively, between the optimal estimated heterogeneous and reference α fields in the synthetic aquifer. Last, the HT was used in the real tested scenario. By comparing the predicted groundwater levels of the optimal estimated heterogeneous α field and the observed groundwater levels of the real aquifer, it was found that the correlation was higher than 0.99. Therefore, the HT can be used to obtain the optimal estimated heterogeneous α field in the artificial island.http://dx.doi.org/10.1155/2018/6046258 |
| spellingShingle | Jet-Chau Wen Hong-Ru Lin Tian-Chyi Jim Yeh Yu-Li Wang Keng-Li Lin Shao-Yang Huang Hydraulic Tomography for Estimating the Diffusivity of Heterogeneous Aquifers Based on Groundwater Response to Tidal Fluctuation in an Artificial Island in Taiwan Geofluids |
| title | Hydraulic Tomography for Estimating the Diffusivity of Heterogeneous Aquifers Based on Groundwater Response to Tidal Fluctuation in an Artificial Island in Taiwan |
| title_full | Hydraulic Tomography for Estimating the Diffusivity of Heterogeneous Aquifers Based on Groundwater Response to Tidal Fluctuation in an Artificial Island in Taiwan |
| title_fullStr | Hydraulic Tomography for Estimating the Diffusivity of Heterogeneous Aquifers Based on Groundwater Response to Tidal Fluctuation in an Artificial Island in Taiwan |
| title_full_unstemmed | Hydraulic Tomography for Estimating the Diffusivity of Heterogeneous Aquifers Based on Groundwater Response to Tidal Fluctuation in an Artificial Island in Taiwan |
| title_short | Hydraulic Tomography for Estimating the Diffusivity of Heterogeneous Aquifers Based on Groundwater Response to Tidal Fluctuation in an Artificial Island in Taiwan |
| title_sort | hydraulic tomography for estimating the diffusivity of heterogeneous aquifers based on groundwater response to tidal fluctuation in an artificial island in taiwan |
| url | http://dx.doi.org/10.1155/2018/6046258 |
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