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Full-waveform Seismic Inversion for Estimating Aquifer Dimensions and Hydrologic Parameters
University of Eastern Finalnd.
Geological Survey of Finland.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics. Uppsala University.ORCID iD: 0000-0003-1241-2988
University of Auckland.
2017 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

This study aims at developing computational tools to estimate aquifer dimensions and hydrologic parameters using seismic data. The poroelastic signature from an aquifer is simulated and using this signature we estimate water-table level and aquifer porosity, and infer the location of aquifer-basement boundary. We use discontinuous Galerkin method to solve the forward model that characterizes the propagation of seismic waves in coupled poroelastic-elastic media. The inverse problem is solved in a Bayesian framework, which enables to take into account modeling uncertainties. For the inverse problem, we use the Bayesian approximation error method, which reduces the overall computational demand. At this stage, results for a 2D synthetic model are presented to illustrate the potential of the algorithm for hydrogeological applications. 

Place, publisher, year, edition, pages
2017.
National Category
Geophysics
Identifiers
URN: urn:nbn:se:uu:diva-328044DOI: 10.3997/2214-4609.201702020OAI: oai:DiVA.org:uu-328044DiVA, id: diva2:1133572
Conference
23rd European Meeting of Environmental and Engineering Geophysics, 3-7 September 2017, Malmö, Sweden
Funder
Swedish Research Council Formas, 25220121907Available from: 2017-08-16 Created: 2017-08-16 Last updated: 2017-08-22Bibliographically approved

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Publisher's full texthttp://earthdoc.eage.org/publication/publicationdetails/?publication=89936

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Malehmir, Alireza

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