Mathematics – Logic
Scientific paper
May 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012geoji.189.1085x&link_type=abstract
Geophysical Journal International, Volume 189, Issue 2, pp. 1085-1102.
Mathematics
Logic
Image Processing, Inverse Theory, Interferometry, Wave Propagation
Scientific paper
Passive seismic interferometry is a new promising methodology for seismic exploration. Interferometry allows information about the subsurface structure to be extracted from ambient seismic noise. In this study, we apply the cross-correlation technique to approximately 25 hr of recordings of ambient seismic noise at the Ketzin experimental CO2 storage site, Germany. Common source gathers were generated from the ambient noise for all available receivers along two seismic lines by cross-correlation of noise records. This methodology isolates the interstation Green's functions that can be directly compared to active source gathers. We show that the retrieved response includes surface waves, refracted waves and reflected waves. We use the dispersive behaviour of the retrieved surface waves to infer geological properties in the shallow subsurface and perform passive seismic imaging of the subsurface structure by processing the retrieved reflected waves.
Gudmundsson Olafur
Juhlin Christopher
Kashubin Artem
Lüth Stefan
Xu Zhuo
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