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Inversion of hydraulic conductivity from Induced Polarisation, Part A: methodology and verification

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The estimation of hydraulic conductivity (K) from geophysical measurements is a key research topic in hydrogeophysics. In the laboratory, the Induced Polarisation (IP) method has a long story of successful K estimation, with two main approaches: i) the approach based on the link between K and imaginary conductivity σ" and ii) the approach based on the link between K and relaxation time τ. In this work, we study more in detail the estimation of hydraulic conductivity from TDIP data from the inversion point of view, re-parameterising the model space directly in terms of hydraulic properties, using both σ" and τ approaches for defining model parameters. We tested parameter correlations with the Markov chain Monte Carlo method, and performed linearized 2D inversions of synthetic data on an aquifer analog. Furthermore, we evaluated the quality of K estimation on borehole field data, against K estimates from grain …
Original languageDanish
Publication year2021
DOIs
Publication statusPublished - 2021
EventEAGE Near Surface Geoscience 2021 - Bordeaux, France
Duration: 30 Aug 20211 Sep 2021
https://eage.eventsair.com/nsg2021/

Conference

ConferenceEAGE Near Surface Geoscience 2021
CountryFrance
CityBordeaux
Period30/08/202101/09/2021
Internet address

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