An investigation of the earth's free oscillations
The free oscillations of the earth excited by the Chilean earthquake of 1960 have been measured by power spectral analysis of strain and pendulum seismographs. A revised and more precise table of free oscillation periods is presented. The period of the fundamental spheroidal mod _0S^0_2 is 53.82 min...
Internet
https://thesis.library.caltech.edu/6319/1/Smith_sw_1961.pdfSmith, Stewart Wilson (1961) An investigation of the earth's free oscillations. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/S9RW-R653. https://resolver.caltech.edu/CaltechTHESIS:04132011-081816354 <https://resolver.caltech.edu/CaltechTHESIS:04132011-081816354>