Determination of seismograph constants from the calibration curve

The explicit expression of the long-period WWSSN calibration curve can be obtained solving the differential equations of the seismograph system in terms of ew and identifying the characteristic equation to a product of polynomials of the second degree. The coefficients of these polynomials are the e...

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Detalles Bibliográficos
Autores principales: Gershanik, Simón, Gershanik, Carlota
Formato: Articulo
Lenguaje:Inglés
Publicado: 1981
Materias:
Geofísica
Calibration
Instruments
Mathematical models
Seismographs
Seismology
Theoretical studies
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/131382
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-131382
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geofísica
Calibration
Instruments
Mathematical models
Seismographs
Seismology
Theoretical studies
spellingShingle Geofísica
Calibration
Instruments
Mathematical models
Seismographs
Seismology
Theoretical studies
Gershanik, Simón
Gershanik, Carlota
Determination of seismograph constants from the calibration curve
topic_facet Geofísica
Calibration
Instruments
Mathematical models
Seismographs
Seismology
Theoretical studies
description The explicit expression of the long-period WWSSN calibration curve can be obtained solving the differential equations of the seismograph system in terms of ew and identifying the characteristic equation to a product of polynomials of the second degree. The coefficients of these polynomials are the equivalent constants. These and a scale factor can be obtained from the calibration curve. The frequency response of the seismograph system is fully determined by these elements provided that the reduced motor constant and the calibration current are known. The explicit knowledge of the seismograph partial constants is not necessary. Newton-Raphson's method is generally efficient to obtain the elements from the calibration curve, but it may fail some times. Levenberg's method (slightly modified) and also simple step reduction can be helpful in such cases. The unknowns can be obtained either freely or under the constraint that some of the partial constants have the values assigned to them. The latter may be convenient when the behavior of parts of the system is affected by some trouble.
format Articulo
Articulo
author Gershanik, Simón
Gershanik, Carlota
author_facet Gershanik, Simón
Gershanik, Carlota
author_sort Gershanik, Simón
title Determination of seismograph constants from the calibration curve
title_short Determination of seismograph constants from the calibration curve
title_full Determination of seismograph constants from the calibration curve
title_fullStr Determination of seismograph constants from the calibration curve
title_full_unstemmed Determination of seismograph constants from the calibration curve
title_sort determination of seismograph constants from the calibration curve
publishDate 1981
url http://sedici.unlp.edu.ar/handle/10915/131382
work_keys_str_mv AT gershaniksimon determinationofseismographconstantsfromthecalibrationcurve
AT gershanikcarlota determinationofseismographconstantsfromthecalibrationcurve
bdutipo_str Repositorios
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