Subsurface mapping of Revdalen

Abstract

In Revdalen in Bø county there has been a lot of research of the possible contamination of the ground water, and the ground water wells which are used by the households in the area. The contamination is connected to the landfill found at Djupegrop. The subsurface mapping of this area has been difficult due to the surficial conditions. Together with the use of earlier data, this study has used two geophysical methods, ground penetrating radar and resistivity measurements, with emphasis on resistivity measurements, to try to enhance the knowledge of the subsurface conditions, especially depth to bedrock. The method of resistivity measurements is new to the Telemark University College, so an additional focus of the study has been to gain experience of the use of the geophysical method, and to gain experience in the use of the software Geographic Information System to process the data of the subsurface mapping.