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Aquifer Characterization Using Elastic Full-waveform Inversion
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 23rd European Meeting of Environmental and Engineering Geophysics, Sep 2017, Volume 2017, p.1 - 5
Abstract
This study exploits the benefits of elastic full-waveform inversion (FWI) as an effort to improve aquifer characterization for better understanding of their properties and delineating their structure. Conventional methods (e.g. boreholes, pumping tests) have usually one-dimensional nature and cannot provide information concerning the lateral heterogeneities of such complex subsurface environments. In the past, many studies were conducted using ground-penetrating radar (GPR), electrical resistivity tomography and seismics which result in two-dimensional tomographic images and provide spatially highly resolved mapping of aquifer heterogeneities. In this research, we focus in the seismic method and in particular we apply FWI to seismic data acquired at the Krauthausen test site. We compare our findings with borehole data and GPR FWI from previous studies. We conclude that combining the results of FWI with additional geophysical techniques can provide more reliable subsurface models and reduce uncertainties on reconstructing the aquifer architecture with higher spatial resolution.