1. Yakovlev, A.P., 1983. Detection of the earth’s natural oscillations by laser deformographs. Izvestiya, Acad. Sci. USSR, 19: 318–321.
The problem concerns detection of the earth’s natural oscillations ex,cited by earthquakes with M < 8.0 by new apparatus. Results are presented for the earth’s natmal oscillations excited by an earthquake of M=7.6 (Mexico, March 14, 1979). Selection of the oscillations was carried out by means of discrete Fomier transformation, by the smoothed window of Blakeman-Harris (autoperiodogram), and by the method of maximum entropy. The last method exhibits higher resolving power.