Geophysical Mapping: Problem Details Problem Name: Porosity / Permeability Problem Type: Groundwater Assigned Methods: + Acoustic logging Borehole Methods + Fluid logging, Flow meter Borehole Methods + Nuclear logging Borehole Methods + Surface Nuclear Magnetic Resonance (SNMR) Radioactivity + Tunnel infrared thermography Thermic Methods 0 BEAM G4 SCAN Electrical Methods 0 Borehole imaging, Structure logging Borehole Methods 0 DC geoelectrics - Profiling Electrical Methods 0 DC geoelectrics - Sounding Electrical Methods 0 Electrical and induction logging Borehole Methods 0 Frequency-domain electromagnetics - Profiling Electromagnetic Methods 0 Frequency-domain electromagnetics - Sounding Electromagnetic Methods 0 Geoelectrics - Crosshole tomography Electrical Methods 0 Geoelectrics - Tomography (surface based) Electrical Methods 0 Ground penetrating radar (surface-based) Electromagnetic Methods 0 Seismic crosshole tomography Seismic Techniques 0 Seismic surface waves methods Seismic Techniques 0 Self potential Electrical Methods 0 Shallow reflection seismics Seismic Techniques 0 Time-domain electromagnetics - Profiling Electromagnetic Methods 0 Time-domain electromagnetics - Sounding Electromagnetic Methods 0 VLF / VLF-R, Radiomagnetotellurics Electromagnetic Methods 0 Vertical seismic profiling (VSP) Seismic Techniques 0 Very-high resolution reflection seismics Seismic Techniques    '+' = Technique applicable; '0' = Application possible/limited use