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- Title
Extending a Lippmann style seismometer's dynamic range by using a non-linear feedback circuit.
- Authors
Romeo, G.; Spinel, G.
- Abstract
A Lippmann style seismometer (Lippmann and Gebrande, 1983) uses a single-coil velocity-feedback method in order to extend toward lower frequencies a geophone's frequency response. Strong seismic signals may saturate the electronics, sometimes clipping the signal or producing the characteristic whale-shaped recording. Adding a non linear feedback in the electronic circuit may avoid saturation, allowing the strong-motion use of the seismometer without affecting the usual performance. Such a seismometer will allow unsaturated data in epicentral area while offering nice low signal recording for far events.
- Subjects
SEISMOMETERS; LIPPMANN process; DYNAMIC range (Acoustics); NONLINEAR theories; CIRCUIT feedback; SIGNAL processing
- Publication
Advances in Geosciences, 2013, Vol 36, p27
- ISSN
1680-7340
- Publication type
Article
- DOI
10.5194/adgeo-36-27-2013