New noise-reduction technique applied to long-period oscillations from the Alaskan earthquake

1972/04/01 by Ralph A. Wiggins, Stephen P. Miller
Earth and Planetary Sciences · Mathematics · Computer Science · #Earthquake Detection and Analysis #Statistical and numerical algorithms #Seismology and Earthquake Studies

paper · doi:10.1785/bssa0620020471

Abstract

abstract We develop a method of noise reduction for seismological data in which bursts of noise are detected and replaced with the use of a prediction error operator. The method is applied to the Alaskan earthquake gravimeter record of Slichter. Nearly all long-period energy can be attributed to transient noise in the signal. There is no evidence for a long-period core oscillation.

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