Spectra of seismic waves of Matsushiro micro-earthquakes |
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Authors: | H N Srivastava J Drakopoulos T Terashima |
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Institution: | (1) Meteorological Office, Lodi Road, New Delhi-3, India;(2) Seismological Observatory, Athens University, Athens, Greece |
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Abstract: | Summary The spectra of Matsushiro micro-earthquakes were studied using a spectrum analyser and discussed in relation to their magnitude and the epicentral distance. It was found that the spectra of seismic waves by Matsushiro micro-earthquakes did not depend upon the epicentral distance since the sonagrams showed a peak around 5 cps at Matsushiro as well as Suzaka. The spectrum also failed to show any distinct peak for micro-earthquakes of magnitude lower than 1.0 due to the decrease of signal to noise ratio. |
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