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COUPLAGE SOL‐GEOPHONE *
Author(s) -
LAMER A.
Publication year - 1970
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1970.tb02111.x
Subject(s) - seismometer , geophone , geology , seismology , homogeneous , coupling (piping) , radius , geodesy , physics , engineering , mechanical engineering , computer security , computer science , thermodynamics
A bstract The seismometer‐ground system is represented by a damped oscillatory system. Relatively simple approximation formulas are derived to express the coupling between ground and seismometer. These expressions are applicable in seismic exploration. The coupling is that of a mass, suspended by a spring, to the surface that the ground would have in absence of the seismometer. It results in a low‐pass filtering of the ground motion, which is due to the presence of the seismometer. This effect is expressed in a unit‐impulse response. It appears that, over a sufficiently homogeneous ground and for low frequencies, one has a true coupling between ground and seismometer. To obtain a sufficiently large pass‐band, a low seismometer housing‐mass together with a not too small housing radius are necessary.