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noise source distribution

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18 - Waveform Inversion of Correlation Data
from Part IV - Inversion for Earth Structure
Brian L. N. Kennett, Australian National University, Canberra, Andreas Fichtner
Book:

Exploiting Seismic Waveforms

Published online:

16 November 2020

Print publication:

03 December 2020, pp 413-427
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Summary

The results of cross-correlation of seismic records depend on both the distribution of seismic sources and the structure in the vicinity of the path between the stations being correlated. The differences between the segments of the correlograms corresponding to opposite senses of propagation between the stations provide information on source excitation, while the properties of the dominant arrivals are mainly sensitive to structure.These properties can be exploited in inversion of the correlation wavefield, to extract both noise sources and Earth structure.