Improved hydrogeophysical characterization using joint inversion of cross‐hole electrical resistance and ground‐penetrating radar traveltime data

摘要: Appropriate regularizations of geophysical inverse problems and joint inversion different data types improve models increase their usefulness in hydrogeological studies. We have developed an efficient method to calculate stochastic regularization operators for given geostatistical models. The method, which combines circulant embedding the diagonalization theorem matrices, is applicable stationary when grid discretization, each spatial direction, uniform volume interest. also used a structural approach jointly invert cross-hole electrical resistance ground-penetrating radar traveltime three dimensions. two are coupled by assuming, at all points, that cross product gradients zero. No petrophysical relationship between conductivity relative permittivity assumed but instead obtained as by-product inversion. has been applied collected U.K. sandstone aquifer order characterization vadose zone hydrostratigraphy. By analyzing scatterplots versus together with zonation could be corresponding estimates formation factor, water content, effective grain radius sediments. provides greater insight into characteristics subsurface than using conventional methods.