Repeated Measurements With Electrical Resistivity Tomography
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Kamil Rozimant,
Vojtech Gajdos
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| Transactions of the VSB - Technical University of Ostrava, Civil Engineering Series |
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2008, Volume 8, Issue 2, Pages 235-238
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Doi: Not indexed
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Electrical resistivity tomography surveys are often repeated over the same line at different times to study the changes of the subsurface resistivity with time. Normally, the data from the surveys conducted at different times are inverted independently, but there is no guarantee that the differences in the resistivity values are only due to actual changes in the subsurface resistivity with time. There is also another approach, when the model obtained from the inversion of the initial data set is used as a reference model to constrain the inversion of the later time-lapse data sets. An example of long-term monitoring in the 3 year cycles is focused on the changes in physical and mechanical properties of deposited fly ash in time.
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