Physics – Space Physics
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979rvgsp..17.2057j&link_type=abstract
Reviews of Geophysics and Space Physics, vol. 17, Nov. 1979, p. 2057-2069. Natural Sciences and Engineering Research Council
Physics
Space Physics
1
Gravitational Waves, Seismic Waves, Seismographs, Wave Propagation, Earth Crust, Equations Of Motion, Relativity, Space-Time Functions, Tensor Analysis
Scientific paper
The theory of resonance absorption of plane gravitational waves incident on a layered earth is developed and applied in the analysis of the response of various crustal models. In comparison with a homogeneous half-space model, crustal layering is found to enhance, greatly, the radiation-generated surface seismic motions at certain resonant frequencies. Under particular conditions the resonance quality Q is limited only by the absorption of elastic energy in the crustal materials. These results suggest that well-located seismograph systems might provide an effective means for the detection of gravitational radiation in the 0.1- to 10-Hz band. The possibility of the incidental discovery of gravitational wave bursts by the community of seismologists is discussed. Furthermore, the response of the earth to gravitational radiation with very long and ultralong periods is discussed in terms of the current understanding of the earth's elastic and fluid mechanical motions. Experiments in seismic detection of gravitational radiation are reviewed.
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