Magnification of low-sensitivity channels in seismographs with standard characteristics
Abstract
The accuracy of an approximate method of computing the magnification of the low-sensitivity channel is analyzed on an analog computer for the parameters of seismographs with standard characteristics used in the network of seismic stations of CAPG (Commission of the Academies of Sciences of the Socialist Countries for Planetary Geophysical Research). The errors of the method of computation depend on the magnitude of the coupling coefficient of the basic channel of the seismograph: for short periods of motion they approach zero and they are usually largest outside the passband in the range of long periods. The error in the magnification of the low-sensitivity channel of a short-period seismograph with an A IV amplitude characteristic and a maximum magnification of the basic channel of 100000 is 65% at the most, of an intermediate-period seismograph with a magnification of 1000 as much as 24%, and of a long-period seismograph with a maximum magnification of 900 up to 19%.
- Publication:
-
In Ceskoslovenska Akademie Ved Geophys. Works
- Pub Date:
- 1985
- Bibcode:
- 1985cavg...30..141B
- Keywords:
-
- Amplitudes;
- Computerized Simulation;
- Coupling Coefficients;
- Damping;
- Dynamic Characteristics;
- Galvanometers;
- Magnification;
- Seismographs;
- Earthquakes;
- Error Analysis;
- Photoelectric Effect;
- Geophysics