Low-frequency and trend compensation of broadband seismograms | Zendy

Shigeo Kinoshita | Zendy

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Low-frequency and trend compensation of broadband seismograms

Author(s) -

Shigeo Kinoshita

Publication year - 2012

Publication title -

earth planets and space

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.835

H-Index - 74

eISSN - 1880-5981

pISSN - 1343-8832

DOI - 10.5047/eps.2012.02.002

Subject(s) - seismogram , broadband , seismometer , geology , seismology , waveform , compensation (psychology) , frequency band , geodesy , telecommunications , bandwidth (computing) , computer science , psychology , radar , psychoanalysis

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 (Mw 9.0), allowed a sharpened velocity waveform to be obtained and the static displacement associated with the earthquake to be determined.

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