Search for dissertations about: "Electromagnetic Measurements Fracture Zones"

Found 2 swedish dissertations containing the words Electromagnetic Measurements Fracture Zones.

2. 1. Plane wave electromagnetic measurements for imaging fracture zones

   Author : Lena Persson; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Geophysics; Electromagnetic Measurements Fracture Zones; Geofysik; Geophysics; Geofysik; Geofysik med inriktning mot fasta jordens fysik; Geophysics with specialization in Solid Earth Physics;

   Abstract : Electromagnetic fields from distant radio transmitters interact with the resistivity structures in the earth. They can be regarded as plane-wave fields since their penetration depth is much smaller than their wavelength. READ MORE

4. 2. Mapping and characterisation of Swedish bedrock by DC resistivity and transient-field electromagnetic measurement

   Author : Hans Thunehed; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Tillämpad geofysik; Applied Geophysics;

   Abstract : DC electrical and electromagnetic methods have been used for a long time to detect and characterise fracture zones in site investigations and other engineering projects. However, the methods have not been used very much in basic geological mapping of crystalline rock on a regional to semi-regional scale. READ MORE