| 摘要(英) |
The Choushui River Alluvial Fan is the largest alluvial fan in Taiwan, formed by the sedimentation of multiple rivers such as the Beigang River, New-Huwei River, and Old-Huwei River. It possesses favorable hydrogeological conditions. In recent years, the region has faced various issues due to excessive groundwater extraction, with land subsidence being the most severe problem. Artificial groundwater recharge is considered an effective solution to address this issue. However, before implementation, it is necessary to understand the hydrogeological structure of the area.
In this study, we employed the Time-Domain Electromagnetic (TDEM) method. We used a 50x50-meter transmitter loop and a 3x3-meter receiver loop, applying the central mode configuration. A total of 64 stations were deployed throughout the Yunlin region. The obtained data were subjected to inversion algorithms to obtain the true resistivity distribution at different depths for each measurement point. Subsequently, a three-dimensional model of the subsurface was constructed using interpolation techniques. This approach successfully depicted the hydrogeological structure of the study area.
Based on the analysis of the model, at least two aquifers and two aquitards were identified in the region. Through the observation of the one-dimensional inversion results, it was found that the resistivity distribution of the subsurface materials exhibited a high-low-high-low pattern, consistent with the drilling data. Additionally, the three-dimensional model revealed the distribution of gravel, sand, and clay.
By comparing the 2D profiles with previous studies, the boundaries of the aquifers and aquitards at depths of 20 meters, 50 meters, 110 meters, and 150 meters were successfully determined. On the horizontal map, a lower resistivity zone at a depth of approximately 10 meters was observed, possibly indicating the presence of ancient river channels. Furthermore, the sediment distribution patterns observed on the horizontal profiles at depths of 50 meters, 100 meters, and 150 meters indicated signs of marine regression. |
| 參考文獻 |
Adisoemarta, P., et al. (2000). Historical use of m and a in well log interpretation: is conventional wisdom backwards? SPE Permian Basin Oil and Gas Recovery Conference, OnePetro.
Almeida, E. R., et al. (2017). "2D TEM modeling for a hydrogeological study in the Paraná Sedimentary Basin, Brazil." International Journal of Geosciences 8(5): 693-710.
Archie, G. E. (1942). "The electrical resistivity log as an aid in determining some reservoir characteristics." Transactions of the AIME 146(01): 54-62.
Carrasquilla, A., et al. (2007). "Evaluating the performance of different geophysical methods for groundwater prospecting In Espirito Santo Basin-Southeast Brazil." Tecnociencia 9(2): 89-106.
Chen, C. S. (1999). "TEM investigations of aquifers in the southwest coast of Taiwan." Groundwater 37(6): 890-896.
Cumming, W. and R. Mackie (2010). Resistivity imaging of geothermal resources using 1D, 2D and 3D MT inversion and TDEM static shift correction illustrated by a Glass Mountain case history. Proceedings world geothermal congress, Bali, Indonasia.
Glover, P. W., et al. (2000). "A modified Archie’s law for two conducting phases." Earth and Planetary Science Letters 180(3-4): 369-383.
GoldenSoftware (2015). Voxler®4 3D Well & Volumetric Data Visualization Full User’s Guide, Golden Software.
Kalisperi, D., et al. (2018). "A transient electromagnetic (TEM) method survey in north-central coast of Crete, Greece: Evidence of seawater intrusion." Geosciences 8(4): 107.
M.V. Sharlov, R. V. S. (2017). FASTSNAP Telemetric equipment for electro prospecting studies Operation and software manual, LLC «SIGMA ELECTRONICS».
M.V. Sharlov, R. V. S. (2017). Model3 Modeling software User manual Version 1.0, LLC «SIGMA ELECTRONICS».
Metwaly, M., et al. (2014). "Groundwater contamination assessment in Al-Quwy’yia area of central Saudi Arabia using transient electromagnetic and 2D electrical resistivity tomography." Environmental earth sciences 71(2): 827-835.
Puntu, J., et al. (2023). Assessment of Potential Artificial Recharge Area Using 3D Geological Model Based on Multi-Geoelectrical Data and Machine Learning Approach. 5th Asia Pacific Meeting on Near Surface Geoscience & Engineering, European Association of Geoscientists & Engineers.
Shaaban, H., et al. (2016). "Shallow groundwater investigation using time-domain electromagnetic (TEM) method at Itay El-Baroud, Nile Delta, Egypt." NRIAG Journal of Astronomy and Geophysics 5(2): 323-333.
Sharlov, М. V. (2015). FastSnap Digital Electroprospecting System Version 3.0 User Guide, SIGMA LLC, Russia.
Smith, R. and G. Buselli (1991). "Examples of data processed using a new technique for presentation of coincident-and in-loop impulse-response transient electromagnetic data." Exploration Geophysics 22(2): 363-368.
Spies, B. R. (1989). "Depth of investigation in electromagnetic sounding methods." Geophysics 54(7): 872-888.
Sun, B. and H. Li (2016). A study on transient electromagnetic signal acquisition and processing for exploring hidden disaster-causing factors in coalmine. 2016 International Conference on Computer, Information and Telecommunication Systems (CITS), IEEE.
Yu, X., et al. (2018). Alluvial Fan Depositional System, Springer International Publishing: 325-351.
江崇榮, 黃., 陳瑞娥, 費立沅 (2005). 濁水溪沖積扇地下水區之補注區釐定.
江崇榮, 賴., 賴慈華, 黃智昭, 費立沅, 侯進雄, 陳瑞娥, 陳利貞, 呂學諭, 周素卿, 鄂忠信, 黃明昌, 陸挽中, 張閔翔, 劉幸樺, 李耀文 (1999). 濁水溪沖積扇水文地質調查研究總報告. 新北市中和區, 經濟部中央地質調查所.
張瑞津 (1983). "濁水溪沖積扇河道變遷之探討." 地理學研究=Geographical Studies第7期: 85-100.
陳文山, et al. (2004). "末次冰期以來台灣海岸平原區的海岸線變遷." 國立台灣大學考古人類學刊, 考古人類學刊第(62): 40-55.
陳文福 (1998). "濁水溪扇洲及鄰近地區之沈積物分布與沈積環境." 地質=Ti-Chih第18卷, 第2期: 17-28.
黃智昭、陸挽中、張閔翔 (2015). 濁水溪沖積扇地下水補注地質敏感區之劃定, 經濟部中央地質調查所.
經濟部中央地質調查所 (1999). 臺灣地區地下水觀測網第一期計畫濁水溪沖積扇水文地質調查研究總報告: 附圖, 經濟部中央地質調查所.
經濟部水利署 (2019). 108 年度臺灣地區地層下陷概況說明 摘要報告, 經濟部水利署.
經濟部水利署 (2022). "經濟部水利署水文資訊網整合服務系統歷史水文資料." from https://gweb.wra.gov.tw/Hydroinfo/?id=Index.
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