Low-frequency and trend compensation of broadband seismograms

Shigeo Kinoshita
2012 Earth, Planets and Space  
The present paper proposes a technique for low-frequency and trend compensation of broadband seismograms, which involves frequency-band broadening using digital filtering and background-trend compensation based on a Heaviside-type tilt signal estimated using a stochastic trend model. Applying this method to the east-west component of broadband seismograms, recorded using VSE355G3 broadband seismometers at the KSN site of F-net for the 2011 off the Pacific coast of Tohoku Earthquake (M w 9.0),
more » ... lowed a sharpened velocity waveform to be obtained and the static displacement associated with the earthquake to be determined.
doi:10.5047/eps.2012.02.002 fatcat:lhawjlk3lzcj3ikgqz3nke62sq