This study is based on a data set of aftershocks (location, fault−plane solutions) following the M=5.1 Arudy earthquake (02/29/80, French Western Pyrenees), and complementary geomorphological data (virtual geology using DEM and aerial photography). Data processing using Geophysical Information System are combined with identification of multi−structures based on the anisotropic wavelet formalism...

Despite some minor grammar and orthographic errors, the paper is well-written, explains the problem clearly, presents the method in a clean manner and provides a sufficient amount of details of it. My only real concern with this paper is its suitability for Nonlinear processes in geophysics, as no nonlinear geophysical process is described in all the paper, just a processing technique (interest...

geophysical techniques remain the only ways to remotely and non-destructively sense the earth’s near subsurface and as such have the most promising prospect for rapid and accurate detection of underground tunnels. today, electrical resistivity and seismic refraction geophysical methods have been greatly developed to identify structures and underground cavities. in this study, the ability of the...

Accurate information about soil properties is required in plant growth and yield. Hence, the rising knowledge preservation of favourable basically driven by its vital role agricultural crop productivity. Electrical Resistivity Tomography (ERT) GIS were used for site selection, suitability use topographical effect on distribution Ambrose Alli University. Twelve traverses conducted across study a...

J. C. Maréchal*, M. P. Sarma, S. Ahmed and P. Lachassagne Indo-French Centre for Groundwater Research, National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India Bureau de Recherches Géologiques et Minières–French Geological Survey, Service EAU, Unite RMD, 1039 avenue de Pinville, F-34000 Montpellie...

A stochastic Bayesian approach for combining well logs and geophysical surveys for enhancing subsurface characterization is presented. The main challenge we face is in creating the bridge to link between ambiguously related geophysical surveys and well data. The second challenge is imposed by the disparity between the scale of the geophysical survey and the scale of the well logs. Our approach ...

A geothermal reservoir causes inhomogeneity in the physical properties of the subsurface geology due to the high changes in temperature. These physical properties can be ob‐ served by means of varying anomalies from geophysical observations from the surface. These physical properties include electrical conductivity, rock density, magnetic suscepti‐ bility, rock elasticity, and, finally, the tem...

Controlled-source electromagnetics (CSEM) is a geophysical method used by industry to find and derisk reservoirs in marine settings. To reduce the impact of the complicated settings and improve the detecting capabilities of CSEM, we apply synthetic aperture, which virtually increases the length of the source. Applying a weight to each source steers or focuses the synthetic aperture source array...