Abstract
A crustal velocity model has been developed for Fennoscandia, the
Baltic shield and adjacent areas. This model represents a simplified
average of various models developed for parts of this region. We
show that P-wave travel times calculated with this model provide
an excellent fit to observations at the Fennoscandian, KRSC and IRIS
station networks for a set of seismic events with known or very well-constrained
locations. The station-event paths cover large parts of Western Russia
and the Barents Sea, thus indicating that this model, which we denote
the Barents model, is appropriate for this entire region. We show
by examples that significant improvements in event location precision
can be achieved compared to using the IASPEI model. We finally use
the Barents model to calculate locations of recent small seismic
events in the Novaya Zemlya region of interest in a CTBT monitoring
context.
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