One objective of a lander mission to Jupiter's icy moon Europa is detect liquid water within 30 km as well characterizing the subsurface ocean. In order satisfy this objective, ice shell must also be identified. Inductive electromagnetic (EM) methods are optimal for detection on because even small fraction dissolved salts will make orders magnitude more electrically conductive than shell. Compa...

In the magnetotelluric (MT) method, the analysis of geoelectric dimensionality has acquired special importance in the last years, because numerical codes have made it possible to model and invert data using either one-dimensional (1D), two-dimensional (2D) or three-dimensional (3D) approaches. We present a FORTRAN code termed WALDIM to perform the dimensionality analysis of a set of MT data, ac...

magnetotellurics (mt) is an electromagnetic geophysical method of imaging the earth's subsurface by measuring natural variations of the electrical and magnetic fields at the earth's surface. investigation depth ranges from 300m below ground by recording higher frequencies down to 10,000m or deeper with long-period soundings. research applications include experimentation to further dev...

Magnetotelluric (MT) problems often contain different subdomains where the conductivity of the media depends upon one, two, or three spatial variables. Traditionally, when a MT problem incorporates a three-dimensional (3D) subdomain, the numerical method employed for simulation and inversion was 3D over then entire domain. In here, we propose to take advantage of the possibly lower dimensionali...

Three-dimensional magnetotelluric MT inversion is an emerging technique for offshore hydrocarbon exploration. We have developed a new approach to the 3D inversion of MT data, based on the integral equation method. The Tikhonov regularization and physical constraint have been used to obtain a stable and reasonable solution of the inverse problem. The method is implemented in a fully parallel com...

A new approach to the problem of direction and distance ®nding of magnetospheric ULF oscillations is described. It is based on additional information about the structure of geoelectromagnetic ®eld at the Earth's surface which is contained in the known relations of the theory of magnetovariation and magnetotelluric sounding. This allows us to widen the range of diagnostic tools by using observat...