[en] Geophysical data has been acquired to characterized the fracture network of the surrounding volume within the FEBEX gallery. The geophysic data include new borehole logging such as Natural Gamma and Borehole Ground Penetrating radar and cross hole ultrasonic tomography. The preliminary processing and integration of these different data sets indicates that the GPR record can provide images of the fractures, specially if they are fluid filled. The GPR is specially sensitive to the water content as it directly affects the electrical conductivity and the dielectric permittivity Therefore it is adequate for mapping water conductive fractures of the crystalline rock. The correlation of the anomalies measured by the natural gamma can be correlated with the 'diffractions' in the GPR and the fractures imaged by the borehole televiewer. The cross hole ultrasonic tomography data is under processing and no interpretations have been attempted yet
Source
Buckau, Gunnar; Kienzler, Bernhard (FZK - Inst. fuer Nukleare Entsorgung, Ka rlsruhe (Germany)); Duro, Lara; Montoya, Vanessa (Enviros Spain S.L., Barcelona (Spain)) (eds.); Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden); 424 p; ISSN 1404-0344; 
; Jun 2007; p. 307-314; 2. annual workshop of the integrated project FUNMIG (Fundamental Processes of Radionuclide Migration); Stockholm (Sweden); 21-23 Nov 2006; Also available from: http://www.skb.se/upload/publications/pdf/TR-07-05webb.pdf; 7 figs.
; Jun 2007; p. 307-314; 2. annual workshop of the integrated project FUNMIG (Fundamental Processes of Radionuclide Migration); Stockholm (Sweden); 21-23 Nov 2006; Also available from: http://www.skb.se/upload/publications/pdf/TR-07-05webb.pdf; 7 figs.
[en] One of the main aim of WP 4.1 and 4.2 is to study solute migration mechanisms in crystalline host-rock in realistic conditions. Many organisations are participating in a joint study that is being performed in the FEBEX gallery (NAGRA's Grimsel Test Site, GTS, Switzerland). The FEBEX experiment reproduces at a real scale a high-level waste repository in granite and was installed more than 9 years ago. At moment, it represents the most realistic environment where the processes affecting radionuclide migration from the bentonite to granite can be studied. This paper summarises the main activities carried out at the FEBEX site during the second year of the project
Source
Buckau, Gunnar; Kienzler, Bernhard (FZK - Inst. fuer Nukleare Entsorgung, Ka rlsruhe (Germany)); Duro, Lara; Montoya, Vanessa (Enviros Spain S.L., Barcelona (Spain)) (eds.); Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden); 424 p; ISSN 1404-0344; ; Jun 2007; p. 417-423; 2. annual workshop of the integrated project FUNMIG (Fundamental Processes of Radionuclide Migration); Stockholm (Sweden); 21-23 Nov 2006; Also available from: http://www.skb.se/upload/publications/pdf/TR-07-05webb.pdf; 2 refs., 2 figs., 1 tab.
; Jun 2007; p. 417-423; 2. annual workshop of the integrated project FUNMIG (Fundamental Processes of Radionuclide Migration); Stockholm (Sweden); 21-23 Nov 2006; Also available from: http://www.skb.se/upload/publications/pdf/TR-07-05webb.pdf; 2 refs., 2 figs., 1 tab.