APPLICATION OF THE WAVELET TRANSFORM IN DETECTING MULTIPLE EVENTS OF MICROEARTHQUAKE SEISMOGRAMS

The Wavelet Transform (WT) is employed here to discriminate multiple e vents contained in microearthquake. The WT decomposes the signal into well localized time - frequency compartments (or ''Heisenberg boxes'') that display the energy distribution over the time and frequency doma ins simultaneously, therefore providing a useful technique to characte rize dispersion and attenuation of a seismic signal, as well as to ide ntify multiple interfering events. This letter suggests that the WT co uld provide a useful tool to analyze complicated seismic signals, espe cially to detect the multiple events contained in microearthquake seis mograms.