Event detectability of seismograph stations in Fennoscandia

Details Event detectability of seismograph stations in Fennoscandia Event detectability of seismograph stations in Fennoscandia

Sep 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976pepi...12..329p&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 12, Issue 4, p. 329-342.

Physics

Scientific paper

The event detection probability as a function of ISC magnitude shows significant variations between seismic stations in Fennoscandia. In the teleseismic range, the 50% incremental detection thresholds extend from mb = 4.5 to 5.5 among those stations that reported to the ISC during 1964-1969 the best stations being located in Finland. Most of this variation, though not all, can be explained from noise level fluctuation and regional signal attenuation effects. A common feature for all stations studied is a significantly better detectatbility for signals from eastern Asia than from western North America at a similar distance range. This is interpreted as resulting from higher attenuation in the mantle of high-frequency signals from the latter region.

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