Blar i NTNU Open på forfatter "Rønning, Jan Steinar"
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3D interpretation of helicopter-borne frequency-domain electromagnetic (HEM) data from Ramså Basin and adjacent areas at Andøya, Norway
Baranwal, Vikas Chand; Brönner, Marco; Rønning, Jan Steinar; Elvebakk, Harald Kristian; Dalsegg, Einar (Peer reviewed; Journal article, 2020)The Ramså Basin is situated on the strandflat on the northeastern side of Andøya between Ramså and Skarstein. It is the only known Mesozoic sedimentary basin onshore Norway and therefore represents an easily accessible ... -
Acquisition, Processing and Interpretation of Geophysical Data from the Fen Complex in Telemark, Norway
Frydenlund, Pauline (Master thesis, 2017)This Master s thesis focuses on the acquisition and processing of geophysical data to map the geology of the Fen Complex in Telemark, Norway. Three resistivity and two seismic profiles where acquired at the Fen Complex ... -
AEM in norway: A review of the coverage, applications and the state of technology
Harrison, Edward J.; Baranwal, Vikas Chand; Pfaffhuber, Andreas Aspmo; Christensen, Craig; Skudal, Guro H.; Rønning, Jan Steinar; Anschütz, Helgard; Brönner, Marco (Peer reviewed; Journal article, 2021)From the first use of airborne electromagnetic (AEM) systems for remote sensing in the 1950s, AEM data acquisition, processing and inversion technology have rapidly developed. Once used extensively for mineral exploration ... -
The graphite occurrences of Northern Norway, a review of geology, geophysics, and resources
Gautneb, Håvard; Rønning, Jan Steinar; Engvik, Ane; Henderson, Iain; Larsen, Bjørn Eskil; Solberg, Janja Knezevic; Ofstad, Frode; Gellein, Jomar; Elvebakk, Harald Kristian; Davidsen, Børre (Peer reviewed; Journal article, 2020)There are three provinces in Northern Norway in which occurrences of graphite are abundant; the Island of Senja, the Vesterålen archipelago, and the Holandsfjorden area. From these provinces, we report graphite resources ... -
Gravitational reactivation of a pre-existing post-Caledonian fault system: the deep-seated gravitational slope deformation at Middagstinden, western Norway
Schleier, Markus; Hermanns, Reginald Leonhard Manfred; Krieger, Ingvar; Oppikofer, Thierry; Eiken, Trond; Rønning, Jan Steinar; Rohn, Joachim (Journal article; Peer reviewed, 2016)The origin of linear features in mountain terrain that form distinct vertical steps is generally not obvious and has been discussed to be related to either tectonic faulting or gravitational slope deformation. A strong ... -
Rock-avalanche deposit causes extreme high indoor radon concentrations in Kinsarvik, Ullensvang municipality, Western Norway
Rønning, Jan Steinar; Böhme, Martina; Fredin, Ola; Hansen, Anna Louise Alhed; Hermanns, Reginald Leonhard Manfred; Ofstad, Frode; Penna, Ivanna Marina; Solli, Arne; Høst, Jan (Peer reviewed; Journal article, 2023)The radon problem in Kinsarvik, Ullensvang municipality in Western Norway, is among the most severe in the world. Annual average indoor radon concentrations as high as 56,000 Bq/m3 have been measured. The problem affects ...