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Preliminary analysis of the 21 February 2008 Svalbard (Norway) seismic sequence

By M. Pirli, J. Schweitzer, Lars Ottemoller, M. Raeesi, R. Mjelde, K. Atakan, A. Guterch, S.J. Gibbons, B. Paulsen, W. Debski and T. Kvaerna

Abstract

The Svalbard Archipelago is situated in the northwestern part of the Barents shelf, in close proximity to the passive continental margin. This intraplate region is characterized by some of the highest seismicity in the entire Barents Sea and adjoining continental shelf, surpassed only by the Knipovich ridge (e.g., Engen et al. 2003; International Seismological Centre 2001), which, as a spreading plate boundary, is the structure that dominates the regional stress field. Most of the seismic activity (Figure 1) is characterized by smaller events, which often occur in small concentrations sparsely distributed in time. However, earthquakes of moderate to stronger magnitudes do occur in the Svalbard area, such as the 4 July 2003 mb 5.7 event close to Hopen Island (e.g., Stange and Schweitzer 2004)

Publisher: Seismological Society of America
Year: 2010
DOI identifier: 10.1785/gssrl.81.1.63
OAI identifier: oai:nora.nerc.ac.uk:9847

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