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On 07 October, 1988, a helicopter radiometric survey was flown in the vicinity of Kragerø municipality. The purpose of the survey was to provide radiometric information to help assess radon hazard from radioavtive rocks in the area. A total of 60 line-kilometers of radiometric data were acquired in a single flight, covering an area of approximately 3 square km with a 50-m line spacing. The data were collected by The Geological Survey of Norway (NGU) personnel and processed at NGU.
In cooperation with the geologist for Buskerud, Telemark and Vestfold, the NGU conducted an airborne geophysical survey in Kviteseid area in May 2012. This report describes and documents the acquisition, processing and visualization of recorded datasets. The geophysical survey results reported herein are 3514 line km. The optically pumped cesium magnetometer and 1024 channels RSX-5 spectrometer was used for data acquisition.
NGU conducted an airborne magnetic and radiometric survey in the Nissedal area in July 2011 on behalf of the Region Geologist in Buskerud, Telemark and Vestfold; Sven Dahlgren. This report describes and documents the acquisition, processing and visualization of recorded atasets.
In september, 1998, two helicopter geophysical survey were carried out over parts of Larvik and Porsgrunn municipalities. The purpose of the survey was to provide geophysical information to improve geological mapping in the area. A combined total of 3684 line-kilometres of VLF, radiometric, and magnetometric, and VLF data were collected in June, 1997, in a test area east from Larvik. The 1997 survey covered approximately 64 square km with a 100-m line spacing.
NGU conducted an airborne geophysical survey in Tokke, Vinje, Kviteseid and Seljord municipalities, as part of NGU’s general airborne mapping program. The data acquisition in the Totak area was started in June 2020 and completed in September 2020. This report describes and documents the acquisition, processing and visualization of the acquired datasets and presents them in maps.
NGU conducted an airborne geophysical survey in Fyresdal, Nissedal, Åmil, Vegårshei, Gjerstad municipalities as part of NGU’s general airborne mapping program. Treungen area was completed in June 2020, and Vegårshei area completed in October 2020. This report describes and documents the acquisition, processing and visualization of the acquired datasets and presents them in maps.
NGU conducted an airborne geophysical survey around Kongsberg region covering Krøderen, Sokna, Høneføss, Kongsberg, Vikersund, Hokksund and Hvittingfoss regions during 2008-2011. This report describes and documents the acquisition, processing and visualization of recorded datasets. The geophysical survey preformed herein results in total 13985 line km that covers approximately an area of 2797 km2.
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