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Calibration of the Wiechert seismographs relative to a reference seismometer


Title (Dublin Core)

eng Calibration of the Wiechert seismographs relative to a reference seismometer

Description (Dublin Core)

eng The horizontal 1000 kg Wiechert seismograph has been calibrated on the basis of a comparison of its records to the ones that were obtained by the reference seismometer. The resulting magnification curve shows notable deviations from the theoretical one. Its most prominent feature is a sudden magnification increase observed for frequencies above 5 Hz, which is attributed to frame oscillations excited by the seismic waves. Also, the observed average response curve exhibits larger magnification for frequencies below the resonance frequency. The results indicate a non-linear behavior of the Wiechert instrument related to the degree of impulsiveness of the excitation.

Creator (Dublin Core)

Herak, Marijan
Allegretti, Ivo
Herak, Davorka
Duda, Seweryn J.

Subject (Dublin Core)

eng Seismograph calibration; historical instrumentation; Wiechert seismograph

Publisher (Dublin Core)

Andrija Mohorovicic Geophysical Institute

Date (Dublin Core)


Type (Dublin Core)


Format (Dublin Core)


Identifier (Dublin Core)

Source (Dublin Core)

ISSN 0352-3659 (Print)
ISSN 1846-6346 (Online)
Volume 13
Issue 1

Language (Dublin Core)


Rights (Dublin Core)

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