We have developed a new data acquisition system and technique to measure the radio magnetotelluric (RMT) signals from distant radio transmitters with the objective of mapping and modeling electric resistivity structures below a river or lake. The acquisition system is towed by a boat; therefore, we call the technique boat-towed RMT. The data acquisition is fast with a production rate of approxi...

With the majority of coal mines in uncovered and semi-covered strata now explored developed, most undiscovered coal-bearing are concealed. Compared with expensive drilling, deep targets such as concealed can be more efficiently cost-effectively discovered through geophysical methods. We designed an integrated exploration approach to detect Yangjiazhangzi (YJZZ) area. Large-scale magnetotelluric...

In recent years, dozen low-intensity earthquakes occurred in southern Garut, West Java Indonesia; two of them were reported destructive. However, those shallow earthquake clusters are hardly associated with well-known active faults the area. Hence, we conducted 3D gravity combined 2D magnetotellurics (MT) inversions to study subsurface. Gravity and MT modeling confirm a basin around 5 km depth ...

The geoelectric properties of the geothermal system associated with Tolhuaca volcano were investigated by three-dimensional (3D) inversion magnetotelluric (MT) data. This study presents first resistivity model derived from 3D MT to have a better understanding its magmatic and hydrothermal system. We selected data 54 stations for inversion. performed series tests changing type be inverted, as we...