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Geophysics Department Seminar - John Bradford: Getting the Most from Our Data: Ground-Penetrating Radar Imaging and Inversion

Date and Time: 
February 8, 2018 -
12:00pm to 1:15pm
Mitchell 350/372
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Event Sponsor: 
Geophysics Department

Speaker: John Bradford, Colorado School of Mines

The propagating ground-penetrating radar (GPR) wave carries much information about the material through which it has passed.  If we properly record and analyze the signal, it is sometimes possible to extract detailed electromagnetic properties, which in turn may provide information about other relevant properties such as liquid water content, porosity, or pore fluid composition.  Through field and synthetic examples drawn from contaminated site characterization, hydrogeophysics, and cryosphere studies, I give an overview of analysis tools from reflection traveltime tomography to full-wavefield inversion.  Each of these approaches carries its own challenges and potential pitfalls, but the examples illustrate that GPR can provide a rich source of detailed information about the subsurface.