Authors / CoAuthors
Brodie, R.C. | Sambridge, M.
Abstract
The holistic inversion approach for frequency domain AEM data (Brodie and Sambridge, 2006) has previously been employed to simultaneously calibrate, process and invert raw frequency-domain data where prior information was available. An alternative formulation has been developed, which is suitable in the case where explicit prior information is not available. It incorporates: a multi-layer vertically-smooth conductivity model; a simplified bias parameterization; horizontal smoothing with respect to elevation; and cluster computer parallelisation. Without using any prior data, an inversion of 8.0 million data for 3.4 million parameters yields results that are consistent with independently derived calibration parameters, downhole logs and groundwater elevation data. We conclude that the success of the holistic inversion method is not dependent on a sophisticated conceptual model or the direct inclusion of surrey-area specific prior information. In addition, acquisition costs could potentially be reduced by employing the holistic approach which may eliminate the need for high altitude zero-level measurements.
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nonGeographicDataset
eCat Id
68255
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Keywords
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- External PublicationScientific Journal Paper
- ( Theme )
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- Airborne Electromagnetics
- ( Theme )
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- geophysics
- ( Theme )
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- model
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2009-01-01T00:00:00
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