FIELD: study of physical phenomena. SUBSTANCE: uninterrupted monitoring of parameter of geophysical field changing in time is carried out. Value of period and frequency of its variations are found. Amplitude of monitored parameter is measured and conclusion of possible occurrence of catastrophic phenomena is made if sinusoidal variation process with period from 100 to 1 000 000 s having variation amplitude which statistically reliably differs from background values for given locality is detected. EFFECT: improved reliability of method. 3 dwg
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Authors
Dates
1995-03-10—Published
1992-11-16—Filed