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Epikarst water detection using integrated geophysical methods

When detecting epikarst water using the self-potential method, the actual location of the anomaly center often deviates from the prospecting result due to the interference of the regional background field, which is comprised of geological noise and artificial electromagnetic fields. Ultimately, this...

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Detalles Bibliográficos
Autores principales: Du, Chengliang, Chen, Yixiang, Xie, Hua, Lai, Xiaohua, Lin, Jing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10395017/
https://www.ncbi.nlm.nih.gov/pubmed/37539307
http://dx.doi.org/10.1016/j.heliyon.2023.e17596
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author Du, Chengliang
Chen, Yixiang
Xie, Hua
Lai, Xiaohua
Lin, Jing
author_facet Du, Chengliang
Chen, Yixiang
Xie, Hua
Lai, Xiaohua
Lin, Jing
author_sort Du, Chengliang
collection PubMed
description When detecting epikarst water using the self-potential method, the actual location of the anomaly center often deviates from the prospecting result due to the interference of the regional background field, which is comprised of geological noise and artificial electromagnetic fields. Ultimately, this makes it difficult to locate the detection target accurately. To address the potential offset of the anomaly center location, in this study we introduce the differential filtering method into the data processing procedure. This method has smoothing and low-pass filtering effects, facilitating the extraction of meaningful anomalies. Meanwhile, based on the anomalous features of different physical parameters, we propose an integrated method system based on differentially filtered horizontal self-potential gradient data, the composite profile method, and the high-density electrical method, which can effectively improve the accuracy of anomaly localization. This newly established method system was applied at the Xiaguantun test site in Longzhou County, Chongzuo, Guangxi Province, China, and its effectiveness and feasibility was confirmed.
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spelling pubmed-103950172023-08-03 Epikarst water detection using integrated geophysical methods Du, Chengliang Chen, Yixiang Xie, Hua Lai, Xiaohua Lin, Jing Heliyon Research Article When detecting epikarst water using the self-potential method, the actual location of the anomaly center often deviates from the prospecting result due to the interference of the regional background field, which is comprised of geological noise and artificial electromagnetic fields. Ultimately, this makes it difficult to locate the detection target accurately. To address the potential offset of the anomaly center location, in this study we introduce the differential filtering method into the data processing procedure. This method has smoothing and low-pass filtering effects, facilitating the extraction of meaningful anomalies. Meanwhile, based on the anomalous features of different physical parameters, we propose an integrated method system based on differentially filtered horizontal self-potential gradient data, the composite profile method, and the high-density electrical method, which can effectively improve the accuracy of anomaly localization. This newly established method system was applied at the Xiaguantun test site in Longzhou County, Chongzuo, Guangxi Province, China, and its effectiveness and feasibility was confirmed. Elsevier 2023-06-29 /pmc/articles/PMC10395017/ /pubmed/37539307 http://dx.doi.org/10.1016/j.heliyon.2023.e17596 Text en © 2023 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Du, Chengliang
Chen, Yixiang
Xie, Hua
Lai, Xiaohua
Lin, Jing
Epikarst water detection using integrated geophysical methods
title Epikarst water detection using integrated geophysical methods
title_full Epikarst water detection using integrated geophysical methods
title_fullStr Epikarst water detection using integrated geophysical methods
title_full_unstemmed Epikarst water detection using integrated geophysical methods
title_short Epikarst water detection using integrated geophysical methods
title_sort epikarst water detection using integrated geophysical methods
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10395017/
https://www.ncbi.nlm.nih.gov/pubmed/37539307
http://dx.doi.org/10.1016/j.heliyon.2023.e17596
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