Seismic interferometry-turning noise into signal

Seismic interferometry-turning noise into signal

Curtis, A.
Gerstoft, P.
Sato, H.
Snieder, R.
Wapenaar, C.P.A.

Civil Engineering and Geosciences

2006-09-30

Turning noise into useful data—every geophysicist's dream? And now it seems possible. The field of seismic interferometry has at its foundation a shift in the way we think about the parts of the signal that are currently filtered out of most analyses—complicated seismic codas (the multiply scattered parts of seismic waveforms) and background noise (whatever is recorded when no identifiable active source is emitting, and which is superimposed on all recorded data). Those parts of seismograms consist of waves that reflect and refract around exactly the same subsurface heterogeneities as waves excited by active sources. The key to the rapid emergence of this field of research is our new understanding of how to unravel that subsurface information from these relatively complex-looking waveforms. And the answer turned out to be rather simple. This article explains the operation of seismic interferometry and provides a few examples of its application.

geophysical techniques
seismology
structural engineering
earthquakes
interferometry

http://resolver.tudelft.nl/uuid:bc099609-47bd-4ad8-91ad-2a4a9a949c0f

https://doi.org/10.1190/1.2349814

Society of Exploration Geophysicists

1070-485X

The Leading Edge, 25 (9), 2006

Institutional Repository

journal article

© 2006 Society of Exploration Geophysicists