Abstract
The installation of two seismic networks in 1987 has contributed significantly to our knowledge about the seismicity in northern Norway and surrounding areas. During a one-year period about 200 events in the magnitude (ML) range 1.5 to 4.0 were recorded, and the earthquakes are found in general to follow the main fault systems and other presumed zones of weakness. Among these, the northern parts of the Møre-Trøndelag Fault Zone has shown an unexpectedly high seismic activity, which may be due to a recent activation of these structures. Some events have also been located along the Ringvassøy-Loppa Fault Complex and in other parts of the western Barents Sea, which on earlier maps (with higher detection thresholds) have been practically void of earthquakes. Expectedly, a very high activity has been found around the Senja Fracture Zone, while no events have been located in the eastern Barents Sea during the operational period of the networks.
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© 1989 Kluwer Academic Publishers
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Kvamme, L.B., Hansen, R.A. (1989). The Seismicity in the Continental Margin Areas of Northern Norway. In: Earthquakes at North-Atlantic Passive Margins: Neotectonics and Postglacial Rebound. NATO ASI Series, vol 266. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2311-9_25
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DOI: https://doi.org/10.1007/978-94-009-2311-9_25
Publisher Name: Springer, Dordrecht
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