Characterizing Hydrogeological structures using Transient Electromagnetic Method; A case study of Choushui River Alluvial Fan, Central Taiwan

L. Kassie, P. Chang, H. Huang, C. Chen, J. Zeng, Y. G. Doyoro, J. M. Puntu, D. Lin, H. H. Amania

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

Understanding the subsurface geological condition is essential for groundwater investigation. The geophysical method is effectively applied to explore hydrogeological properties and structures. Among geophysical techniques, Transient Electromagnetic Method (TEM) is widely implemented. A TEM data is collected in the Choushui Rivier alluvial fan, Taiwan, to characterize the hydrogeological structures of the area. To identify boundaries, we implemented Continuous Wavelet Transform (CWT) to the resistivity log data and considered it a guide for the inversion process. Available resistivity and lithology logs help us interpret the inverted TEM data confidently. The 1D resistivity model is consistent with the geophysical well-log resistivity and lithology logs. The shallow layer resistivity ranges from 30-40 ohm.m; inferred as a silt and clay layer. It is considered an impervious hydrogeological structure. The resistivity value of the model slightly increased starting from 60 m depth; it is likely associated with coarse sand and could be the potential aquifer unit of the area.

原文???core.languages.en_GB???
主出版物標題5th Asia Pacific Meeting on Near Surface Geoscience and Engineering, NSGE 2023
發行者European Association of Geoscientists and Engineers, EAGE
ISBN(電子)9789462824577
DOIs
出版狀態已出版 - 2023
事件5th Asia Pacific Meeting on Near Surface Geoscience and Engineering, NSGE 2023 - Taipei, Taiwan
持續時間: 6 3月 20239 3月 2023

出版系列

名字5th Asia Pacific Meeting on Near Surface Geoscience and Engineering, NSGE 2023

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???event.eventtypes.event.conference???5th Asia Pacific Meeting on Near Surface Geoscience and Engineering, NSGE 2023
國家/地區Taiwan
城市Taipei
期間6/03/239/03/23

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