Academic Journal
Using the stretched exponential function for automatic processing of time-domain induced polarization data and further interpretation.
| Τίτλος: | Using the stretched exponential function for automatic processing of time-domain induced polarization data and further interpretation. |
|---|---|
| Συγγραφείς: | Lévy, L, Che, H, Weller, A |
| Πηγή: | Geophysical Journal International; Apr2026, Vol. 245 Issue 1, p1-19, 19p |
| Θεματικοί όροι: | Induced polarization, Spectrum analysis, Electronic data processing, Mathematical functions, Geophysics |
| Reviews & Products: | MatLab (Computer software) |
| Περίληψη: | Time-domain induced polarization (TDIP) data carry spectral information that can be used for petrophysical interpretation. At the same time, TDIP data can be collected in the field more efficiently than frequency-domain induced polarization (FDIP) data, thanks to the use of square-wave signals. However, TDIP field data are prone to noise, particularly strong near industrial installations and urban areas, above conductive media and in cases where little current is injected. The integral chargeability is a useful parameter to smoothen out the signal but it precludes any spectral interpretation. Debye decomposition (DD) is recognized as one of the best methods for spectral interpretation but the extracted parameters are particularly affected by data noise. More generally, processing TDIP data before further analysis, such as inversion or spectral analysis, is usually necessary for any quantitative interpretation. We propose here an automatic processing algorithm, based on the Kohlrausch–Williams–Watts (KWW) function, which is very close to the Havriliak-Negami model in frequency-domain, that fulfills this need. The processing is completed by an empirical handling of early-time electromagnetic coupling effects to improve the overall performance. The resulting procedure, tested and validated on three data sets that cover a large range of contexts, electrode configurations and acquisition settings, is available as open-source MATLAB scripts. The proposed approach is especially useful for further extracting spectral information from TDIP data through DD. Thanks to the theoretical framework offered by the KWW function, the behaviour of the integral chargeability could be investigated in a systematic manner, using both synthetic and field TDIP data. Recommendations could be formulated on how to make use of the spectral information, while keeping the automatic processing transparent and accessible to unexperienced users. This work advances the use of TDIP in the field of environmental geophysics. [ABSTRACT FROM AUTHOR] |
| Copyright of Geophysical Journal International is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Βάση Δεδομένων: | Complementary Index |
| FullText | Links: – Type: other Text: Availability: 0 |
|---|---|
| Header | DbId: edb DbLabel: Complementary Index An: 192209475 RelevancyScore: 1061 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 1060.75964355469 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Using the stretched exponential function for automatic processing of time-domain induced polarization data and further interpretation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lévy%2C+L%22">Lévy, L</searchLink><br /><searchLink fieldCode="AR" term="%22Che%2C+H%22">Che, H</searchLink><br /><searchLink fieldCode="AR" term="%22Weller%2C+A%22">Weller, A</searchLink> – Name: TitleSource Label: Source Group: Src Data: Geophysical Journal International; Apr2026, Vol. 245 Issue 1, p1-19, 19p – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Induced+polarization%22">Induced polarization</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+data+processing%22">Electronic data processing</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+functions%22">Mathematical functions</searchLink><br /><searchLink fieldCode="DE" term="%22Geophysics%22">Geophysics</searchLink> – Name: SubjectProduct Label: Reviews & Products Group: Su Data: <searchLink fieldCode="PS" term="%22MatLab+%28Computer+software%29%22">MatLab (Computer software)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Time-domain induced polarization (TDIP) data carry spectral information that can be used for petrophysical interpretation. At the same time, TDIP data can be collected in the field more efficiently than frequency-domain induced polarization (FDIP) data, thanks to the use of square-wave signals. However, TDIP field data are prone to noise, particularly strong near industrial installations and urban areas, above conductive media and in cases where little current is injected. The integral chargeability is a useful parameter to smoothen out the signal but it precludes any spectral interpretation. Debye decomposition (DD) is recognized as one of the best methods for spectral interpretation but the extracted parameters are particularly affected by data noise. More generally, processing TDIP data before further analysis, such as inversion or spectral analysis, is usually necessary for any quantitative interpretation. We propose here an automatic processing algorithm, based on the Kohlrausch–Williams–Watts (KWW) function, which is very close to the Havriliak-Negami model in frequency-domain, that fulfills this need. The processing is completed by an empirical handling of early-time electromagnetic coupling effects to improve the overall performance. The resulting procedure, tested and validated on three data sets that cover a large range of contexts, electrode configurations and acquisition settings, is available as open-source MATLAB scripts. The proposed approach is especially useful for further extracting spectral information from TDIP data through DD. Thanks to the theoretical framework offered by the KWW function, the behaviour of the integral chargeability could be investigated in a systematic manner, using both synthetic and field TDIP data. Recommendations could be formulated on how to make use of the spectral information, while keeping the automatic processing transparent and accessible to unexperienced users. This work advances the use of TDIP in the field of environmental geophysics. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of Geophysical Journal International is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edb&AN=192209475 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1093/gji/ggag010 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 1 Subjects: – SubjectFull: MatLab (Computer software) Type: general – SubjectFull: Induced polarization Type: general – SubjectFull: Spectrum analysis Type: general – SubjectFull: Electronic data processing Type: general – SubjectFull: Mathematical functions Type: general – SubjectFull: Geophysics Type: general Titles: – TitleFull: Using the stretched exponential function for automatic processing of time-domain induced polarization data and further interpretation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lévy, L – PersonEntity: Name: NameFull: Che, H – PersonEntity: Name: NameFull: Weller, A IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 0956540X Numbering: – Type: volume Value: 245 – Type: issue Value: 1 Titles: – TitleFull: Geophysical Journal International Type: main |
| ResultId | 1 |