pure and applied geophysics

, Volume 63, Issue 1, pp 82–104 | Cite as

Application of array data processing techniques to the swedish seismograph stations

  • Eystein S. Husebye
  • Bo Jansson
Article

Summary

An efficient tool in seismic signal analysis is offered by the array data processing techniques which are based upon similarity of pulse shapes between stations. Records at the six Swedish stations in general exhibit the signal resemblance required by the array methods. By applying a simple processing technique, the signal-to-noise ratio is increased by a factor of about 2, and the accuracy ofP-wave readings is improved. High similarity is found not only between the same phase (P, pP) at different stations, but also between different phases (P, pP) at the same or different stations. Altogether, records of eleven earthquakes were investigated in detail. The Swedish station network can be considered as a ‘super-large aperture seismic array’ (SLASA), despite some differences in instrumental equipment. A general adaptation of array techniques to SLASA systems is discussed. Such methods will greatly improve the seismological information which can be extracted from ordinary station records, provided the stations are located on geologically homogeneous ground.

Keywords

Processing Technique Station Network Pulse Shape Array Data Station Record 

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Copyright information

© Birkhäuser Verlag 1966

Authors and Affiliations

  • Eystein S. Husebye
    • 1
  • Bo Jansson
    • 2
  1. 1.Seismological InstituteUppsalaSweden
  2. 2.Seismological ObservatoryBergenNorway

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