Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by MORENCOS, J. Search for Related Content GeoRef GeoRef Citation

The determination of seismometer damping

SEISMOLOGICAL OBSERVATORIES OF ALICANTE AND ALMERIA INSTITUTO GEOGRAFICO Y CATASTRAL Spain

Abstract

A4BSTRACT: Eaton's method of determining the seismometer damping is extended, in order to make it more easily applicable to any value of period and damping.

The theory of the seismometer response to the release test is developed, showing that, for the application of this method, both release and tapping tests are equivalent.

As a summary of the work, curves are plotted corresponding to the function ß = f (, Q), where is the "reduced time" during which the deflection decreases from its initial value ₀ (release test) or first maximum one _m (tapping test) to Q₀ or Q_m, respectively, Q, being an arbitrary parameter smaller than unity. The graph contains seven curves, for values of Q from 0.1 to 0.5. The higher values are applicable to cases of large period and damping.