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6 - Correlations and Interferometry

from Part II - Correlation Wavefields

Published online by Cambridge University Press:  16 November 2020

Brian L. N. Kennett
Affiliation:
Australian National University, Canberra
Andreas Fichtner
Affiliation:
ETH Zurich
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Summary

We address the nature of the correlation wavefield and its relation to the group of techniques collectively known as seismic interferometry. We establish a direct representation of the cross-correlation of the seismic signals between two stations and show how, with a suitable distribution of sources, this correlation can provide a virtual source-receiver pair whose phase properties arise from differencing. We then discuss the concept of generalised interferometry with an arbitrary distribution of sources, and illustrate the way in which processing procedures can affect the nature of correlated signals

Type
Chapter
Information
Exploiting Seismic Waveforms
Correlation, Heterogeneity and Inversion
, pp. 129 - 156
Publisher: Cambridge University Press
Print publication year: 2020

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