Geophysical Mapping: Problem Findings Displays the valid Assignments. To display specific method information, click on the method name.  Problemtype  Problem  Assigner  Method  Methodtype   Groundwater   Temporal variations   +   Fluid logging, Flow meter   Borehole Methods       +   Geoelectrics - Tomography (surface based)   Electrical Methods       +   Ground penetrating radar (surface-based)   Electromagnetic Methods       +   Ground penetrating radar - Borehole tomography   Electromagnetic Methods       0   DC geoelectrics - Sounding   Electrical Methods       0   Electrical and induction logging   Borehole Methods       0   Geoelectrics - Crosshole tomography   Electrical Methods       0   Refraction seismic tomography (surface-based)   Seismic Techniques       0   VLF / VLF-R, Radiomagnetotellurics   Electromagnetic Methods Search Again         Applicable Techniques