Detectability of regional events by means of the Swedish seismography station 
network

Shapira, A.; Kulhánek, O.; Wahlström, Rutger

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Detectability of regional events by means of the Swedish seismography station network

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Shapira, A.
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Kulhánek, O.
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Wahlström, Rutger
2.6 Seismic Hazard and Stress Field, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Shapira, A., Kulhánek, O., Wahlström, R. (1979): Detectability of regional events by means of the Swedish seismography station network, (Uppsala Reports; 7-79).

https://gfzpublic.gfz-potsdam.de/pubman/item/item_232358

Abstract

A modification of the direct estimation method for threshold magnitudes, originally associated with teleseismic events, is developed. The modified approach enables one to apply the method even to weak events from regions with low seismicity like e.g. Sweden. It is assumed that observations are supplied solely by a seismograph network located within the region. Numerical results reveal that a Swedish earthquake with magnitude 2.0 or larger will, with 90% probability, be detected by at least one station of the current Swedish Seismograph Station Network. Addition of three new stations would decrease (i.e. improve) the threshold to a magnitude of about 1.5.-Authors