A comparative experiment of telluric field frequency selection method and audio-magnetotelluric method next a water well

A comparative experiment of telluric field frequency selection method and audio-magnetotelluric method next a water well | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article A comparative experiment of telluric field frequency selection method and audio-magnetotelluric method next a water well Tianchun Yang, Zhu Yang, Qin Qin, Yawar Hussain, Qilang Yu, Maoyue Zhu This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9176990/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 9 You are reading this latest preprint version Abstract The telluric field frequency selection method (TFFSM) has been proposed for more than 40 years and has achieved good exploration results in groundwater exploration. The cause of its anomaly formation has always been one of the issues that people are concerned about. This article mainly explains the causes of TFFSM anomalies through experimental detection near a known water well, and demonstrates its relevant issues in application. Firstly, the triple-frequency observation was carried out along the survey line to quickly determine the location of groundwater. Secondly, the synchronous observations of three type of frequency selectors in the case of electrode separation and electrode sharing were adopted respectively. Thirdly, the variation of TFFSM exploration results with electrode spacing ( MN ) was studied. Finally, audio-magnetotelluric method (AMT) measurements were taken at two points on the survey line. Through the above experiments, we obtained the potential difference (Δ V ) profile curves and their pseudo-sections of TFFSM under different conditions, as well as the power spectral density curves of electric and magnetic field of AMT, and corresponding apparent resistivity curves. According to the analysis of the experimental results, it can be concluded that the existence of groundwater will cause static effects in the detection results of TFFSM. TFFSM has relatively loosen grounding requirements for electrodes, but the size of MN has a certain influence on exploration depth. From the comparison between TFFSM and AMT, the former has stronger anti-interference ability and site adaptability, and TFFSM can be applied to urban geological exploration in the future. frequency selection method (FSM) audio magnetotelluric method (AMT) static effect well groundwater Full Text Additional Declarations No competing interests reported. Supplementary Files Highlights.docx Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 14 May, 2026 Reviewers agreed at journal 13 May, 2026 Reviews received at journal 18 Apr, 2026 Reviewers agreed at journal 17 Apr, 2026 Reviewers invited by journal 17 Apr, 2026 Editor invited by journal 15 Apr, 2026 Editor assigned by journal 29 Mar, 2026 Submission checks completed at journal 29 Mar, 2026 First submitted to journal 20 Mar, 2026 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-9176990","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":625328694,"identity":"30b30041-736c-4778-9a1d-c4faf1eb197a","order_by":0,"name":"Tianchun Yang","email":"","orcid":"","institution":"Hunan University of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Tianchun","middleName":"","lastName":"Yang","suffix":""},{"id":625328697,"identity":"ba1de3fd-ac4a-4b58-91d6-0fa1a14e4316","order_by":1,"name":"Zhu 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The cause of its anomaly formation has always been one of the issues that people are concerned about. This article mainly explains the causes of TFFSM anomalies through experimental detection near a known water well, and demonstrates its relevant issues in application. Firstly, the triple-frequency observation was carried out along the survey line to quickly determine the location of groundwater. Secondly, the synchronous observations of three type of frequency selectors in the case of electrode separation and electrode sharing were adopted respectively. Thirdly, the variation of TFFSM exploration results with electrode spacing (\u003cem\u003eMN\u003c/em\u003e) was studied. Finally, audio-magnetotelluric method (AMT) measurements were taken at two points on the survey line. Through the above experiments, we obtained the potential difference (Δ\u003cem\u003eV\u003c/em\u003e) profile curves and their pseudo-sections of TFFSM under different conditions, as well as the power spectral density curves of electric and magnetic field of AMT, and corresponding apparent resistivity curves. According to the analysis of the experimental results, it can be concluded that the existence of groundwater will cause static effects in the detection results of TFFSM. TFFSM has relatively loosen grounding requirements for electrodes, but the size of \u003cem\u003eMN\u003c/em\u003e has a certain influence on exploration depth. From the comparison between TFFSM and AMT, the former has stronger anti-interference ability and site adaptability, and TFFSM can be applied to urban geological exploration in the future.\u003c/p\u003e","manuscriptTitle":"A comparative experiment of telluric field frequency selection method and audio-magnetotelluric method next a water well","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-04-27 06:32:31","doi":"10.21203/rs.3.rs-9176990/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"65914654081116970290774191957936950187","date":"2026-05-14T11:17:18+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"222541795844071272863569536781541507132","date":"2026-05-13T06:04:30+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-04-18T07:11:16+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"75958027523597013136915636699644196954","date":"2026-04-18T02:21:48+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-04-17T15:37:29+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2026-04-15T06:55:57+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2026-03-30T01:27:47+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2026-03-30T01:27:34+00:00","index":"","fulltext":""},{"type":"submitted","content":"Discover Geoscience","date":"2026-03-20T08:45:04+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"discover-geoscience","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"Learn more about [Discover Geoscience](https://www.springer.com/journal/44288)","snPcode":"44288","submissionUrl":"https://submission.nature.com/new-submission/44288","title":"Discover Geoscience","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Discover Series","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"92c0dde0-3c73-415d-923c-b51516315a4f","owner":[],"postedDate":"April 27th, 2026","published":true,"recentEditorialEvents":[{"type":"reviewerAgreed","content":"65914654081116970290774191957936950187","date":"2026-05-14T11:17:18+00:00","index":40,"fulltext":""},{"type":"reviewerAgreed","content":"222541795844071272863569536781541507132","date":"2026-05-13T06:04:30+00:00","index":39,"fulltext":""}],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2026-04-27T06:32:31+00:00","versionOfRecord":[],"versionCreatedAt":"2026-04-27 06:32:31","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-9176990","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-9176990","identity":"rs-9176990","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}