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Improved Characterization Through Joint Hydrogeophysicalinversion

Stefan FinsterleSusan HubbardYoram RubinMichael KowalskyJinsong ChenNiklas Linde

其他書名	Examples of Three Different Approaches
出版	Lawrence Berkeley National Laboratory, 2004
URL	http://books.google.com.hk/books?id=Xu4AkAEACAAJ&hl=&source=gbs_api

註釋With the increasing application of geophysical methods to hydrogeological problems, approaches for obtaining quantitative estimates of hydrogeological parameters using geophysical data are in great demand. A common approach to hydrogeological parameter estimation using geophysical and hydrogeological data is to first invert the geophysical data using a geophysical inversion procedure, and subsequently use the resulting estimates together with available hydrogeological information to estimate a hydrogeological parameter field. This approach does not allow us to constrain the geophysical inversion by hydrogeological data and prior information, and thus decreases our ability to make valid estimates of the hydrogeological parameter field. Furthermore, it is difficult to quantify the uncertainty in the corresponding estimates and to validate the assumptions made. They are developing alternative approaches that allow for the joint inversion of all available hydrological and geophysical data. In this presentation, they consider three studies and draw various conclusions, such as on the potential benefits of estimating the petrophysical relationships within the inversion framework and of constraining the geophysical estimates on geophysical, as well as hydrogeological data.