Open AccessThe effect of noise on seismograms
Author(s) -
Pearce R. G.,
Barley B. J.
Publication year - 1977
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1977.tb03691.x
Subject(s) - seismogram , noise (video) , geology , seismology , seismic noise , synthetic seismogram , frequency domain , acoustics , algorithm , computer science , mathematics , physics , artificial intelligence , mathematical analysis , image (mathematics)
Summary. We describe a method which provides an estimate of the accuracy to which time‐domain features of seismic signals can be measured in the presence of noise. Observed seismograms are simulated by adding random noise with the same frequency spectrum and signal‐to‐noise ratio to matching synthetic seismograms. The effect of noise on synthetic and observed P ‐wave first motions is used as an illustration. It is shown that the apparent reliability of such observations, as determined by visual estimation, is often illusory.