Open AccessAutomatic Processing of Multi‐Array Long‐Period Seismic Data
Author(s) -
Mack Harry,
Smart Eugene
Publication year - 1973
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1973.tb02423.x
Subject(s) - seismic array , wavenumber , noise (video) , seismology , geology , signal processing , data processing , period (music) , computer science , extraction (chemistry) , remote sensing , acoustics , physics , computer hardware , optics , digital signal processing , database , artificial intelligence , image (mathematics) , chemistry , chromatography
Summary Long‐period seismic data from the three large arrays ALPA, LASA, and NORSAR are telemetered to the Seismic Array Analysis Center in Alexandria, Virginia, where they are processed in real time by employing a fast frequency‐wavenumber ( f‐k ) detection scheme. The processor incorporates a novel f‐k filtering technique which allows the separation of interfering signals and the extraction of small signals from noise. Surface wave magnitudes ( M s ) are derived directly from the processor output.