Open AccessA Mercury Pendulum Seismometer *
Author(s) -
Gile William W.
Publication year - 1974
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1974.tb03630.x
Subject(s) - seismometer , pendulum , mercury (programming language) , seismology , geology , seismic noise , geodesy , acoustics , physics , astronomy , computer science , programming language
Summary A long‐period mercury pendulum seismometer has been developed at the Seismological Laboratory, California Institute of Technology. The devices are presently operational in several locations throughout the world. The instruments exhibit extremely good sensitivity, stability, and signal to noise ratios in the 0.02‐0.001 Hz range. Seismic waves of 3 × 10 −4 Hz and tilts of a few parts in 10 −11 radians have been observed.