Sökning: "crystalline rock"

Visar resultat 21 - 25 av 50 avhandlingar innehållade orden crystalline rock.

1. 21. Remote Sensing and GIS : Applications for Groundwater Potential Assessment in Eritrea

   Författare :Semere Solomon; KTH; []
   Nyckelord :Remote sensing; Geographic Information Systems; groundwater; geomorphology; Digital elevation model; lithology; hard rock; lineament; structures; hydrogeology; Eritrea;

   Sammanfattning : An integrated approach with remote sensing, GeographicInformation Systems (GIS) and more traditional fieldworktechniques was adopted to assess the groundwater potential inthe central highlands of Eritrea. Digitally enhanced colorcomposites and panchromatic images of Landsat TM and Spot wereinterpreted to produce thematic maps such as lithology andlineaments. LÄS MER

3. 22. Seismic attenuation, shear wave anisotropy and some aspect of fracturing in the crystalline rock of the Siljan Ring area, central Sweden

   Författare :Christopher Juhlin; Uppsala universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : .... LÄS MER

4. 23. Diffusive properties of granitic rock as measured by in-situ electrical methods

   Författare :Martin Löfgren; Ivers Neretnieks; Peter Vilks; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; Kemiteknik; Chemical engineering; Kemiteknik;

   Sammanfattning : Diffusion into the rock matrix has been identified as one of the most important retention mechanisms for dissolved contaminants in fractured crystalline rock. In this thesis the diffusive properties of granitic rock, described by the formation factor, have been investigated by electrical methods. LÄS MER

5. 24. Retardation of Tracers in Crystalline Rock Sorption and Matrix Diffusion of Alkali Metal and Alkaline Earth Metal Tracers in Laboratory and Field Experiments

   Författare :Henrik Johansson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The safety of geological repositories for radioactive or environmentally hazardous waste is dependent on several engineered and natural barriers. One of the natural barriers is the surrounding bedrock, in which water-conducting rock fractures may act as transport pathways in the event of a leakage from the engineered barriers. LÄS MER

7. 25. The Applicability of Geoelectrical Methods in Pre-Investigation for Construction in Rock

   Författare :Berit Ensted Danielsen; Teknisk geologi; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Borehole geophysics; Pre-investigation; Geoelectrical imaging; Applied geophysics; Value of Information Analysis VOIA ;

   Sammanfattning : Construction in rock is associated with risks because knowledge of the geology and ground conditions is limited. Unforeseen rock conditions involve a large risk to the project and can in the end entail delays and extra costs. LÄS MER