Stochastic borehole radar velocity and attenuation tomographies using cokriging and cosimulation

Geophysical experiments to image the shallow internal structure and the moisture distribution of a mine waste rock pile

“…Seven 25-m boreholes spaced 7.5 m apart have been drilled through the pile and perforated PVC casings have also been installed. Borehole radar measurements (single-hole and cross-hole) and conductivity logging have allowed mapping the distribution of water content and grain-size distribution across a vertical section through the boreholes (Gloaguen et al, 2007). Longer electric profiles with deeper penetration have also been measured along and across the pile (Anterrieu, 2006); the results will be outlined in an upcoming publication.…”

Using stochastic crosshole seismic velocity tomography and Bayesian simulation to estimate Ni grades: Case study from Voisey's Bay, Canada

“…More recently, geostatistical approaches for linear inverse problems became widespread (Gloaguen et al, 2005Hansen and Mosegaard, 2008;Hansen et al, 2006). In particular, Gloaguen et al (2005Gloaguen et al ( , 2007 developed a new type of tomographic algorithm that combines geostatistical simulation and tomography in the same process. The algorithm is based on the linear relation between slowness and travel time (cf.…”

Inversion of multiple intersecting high-resolution crosshole GPR profiles for hydrological characterization at the Boise Hydrogeophysical Research Site

“…In recent years, a wide variety of approaches have been developed to generate crosshole GPR tomograms (e.g., Ernst et al, 2007;Giroux et al, 2007;Gloaguen et al, 2007;Hansen and Mosegaard, 2008;Irving et al, 2007;Johnson et al, 2007;Paasche and Tronicke, 2007). Each of these approaches differs in the way that the crosshole data are modeled and/ or inverted, and has advantages and limitations depending on the data quality, nature of the subsurface environment, and particular objectives of the study.…”