Application of Cross-hole Seismic Tomography in Characterization of Heterogeneous Aquifers

Ehosioke, Solomon; Fechner, Thomas

doi:10.3997/2214-4609.20142018

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2015

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“…Mackens et al (2014) proposed the implementation of the data quality weighting using the signal-to-noise ratio of the seismic data and presented first results. This paper presents results obtained during a field campaign in 2014 (Ehosioke, 2014).…”

Section: Introductionmentioning

confidence: 99%

Reliability maps for seismic tomography

Fechner¹,

Ehosioke

Mackens³

et al. 2015

International Conference on Engineering Geophysics, Al Ain, United Arab Emirates, 15-18 November 2015

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SummarySeismic borehole tomography has become a standard method and is routinely used for the detection of karstic phenomena and the delineation of geological structures. Seismic tomography is believed to be the seismic method promising highest accuracy and reliability. Remaining uncertainties due to a non-zero residual travel time fit during data inversion are often neglected. However, data quality has a significant influence on the accuracy of a travel time pick. We present tomographic inversion results where the signal-to-noise ratio of the first arrival times is considered as a data quality measure during tomographic inversion. This new data quality weighting scheme is supposed to provide more reliable inversion results. Information about the reliability of the tomogram provided along with the seismic tomogram may support the geophysicist interpretation. The effect of the data quality weighted inversion is studied on a field data set.

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Section: Introductionmentioning

confidence: 99%