For tomographic imaging of a single physical parameter, the electrical conductivity, a number of well-proven techniques are available. In this project, we combine geoelectric methods (direct current DC), transient electromagnetics (TEM), natural-source magnetotellurics (MT) and controlled-source magnetotellurics (CSMT) (see Fig. 1). The resolution power of the individual methods depends on the ...

[1] Submarine groundwater discharge (SGD) into the ocean is increasingly recognized as an important component of land-ocean interaction. Numerous geological settings may be the source of terrestrially derived SGD, including spatially extensive sand dune systems, which are a common coastal setting in tropical, subtropical, and temperate regions throughout the world. Within the catchment of the G...

The integration of shared earth modeling and robust 3D CSEM modeling and inversion is the key to deriving a reliable quantitative interpretation from marine controlledsource electromagnetic (CSEM) data. Workflows should make use of all available subsurface data and enable the interpreter to select the most geologically relevant resistivity model from the multitude of models that satisfy the sam...

In this work, methods to determine technological system parameters and the ground conductivity structure from different sets of geomagnetically induced current (GIC), magnetic field and geoelectric field observations are explored. The goal of the work is to enable optimal modeling of induced currents in any technological system experiencing GIC. As an additional product, the introduced methods ...

We study intense geomagnetic storms ( Dst < ?100nT) during the first half of solar cycle 24. This type storm appeared only a few times, mostly associated with southwardly directed heliospheric magnetic field Bz . Using various methods such as self-organizing maps, statistical and superposed epoch analysis, we show that right after storms, there is growth in number transmission line failures....

The article presents the results of marine geophysical research ancient port area Chersonesos located in Karantinnaya Bay, which is now about 2–4 m below sea level. Set methods along with archeological and hydroacoustic types work includes bottom electrotomography, has not been used until practice underwater archeology to map remains structures buried by sediments. Based on side-scan sonar prof...