The rates of contemporary vertical movements of the earth's crust, cal
culated for the present epoch on the basis of high-precision leveling
data, are presented as random functions of distance. Proceeding from t
he wave geomechanics concept, the deterministic parts of the random fu
nctions are presented as sums of different sine curves. With the help
of a known spectral analysis technique, it is demonstrated on the exam
ple of two leveling lines that it is possible to isolate standing rota
tion waves with spatial periods of about and less than 120-degrees.