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Conference Paper

Scattering of the high frequency global seismic wave field

Authors
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Sens-Schönfelder,  Christoph
2.4 Seismology, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Bataille,  K.
External Organizations;

Korn,  M.
External Organizations;

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Citation

Sens-Schönfelder, C., Bataille, K., Korn, M. (2012): Scattering of the high frequency global seismic wave field, 72. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) (Hamburg 2012).


https://gfzpublic.gfz-potsdam.de/pubman/item/item_244886
Abstract
The information contained in the high frequency seismic wave field extends beyond travel times. Omnipresent coda waves reflect the structural heterogeneity of the medium that leads to complex propagation paths of scattered waves. Analysis of these coda waves can therefore help to characterize the structure of the medium on length scales that is not accessible by traditional tomographic techniques. Wave propagation at regional distances has been used successfully in this context. Seismologie - Naturgefahren und Geophysik – 281 Here we focus on global distances. We present an algorithm to model the high frequency seismic energy propagation in a spherically symmetric Earth model such as ak135 with additional small scale heterogeneity. The algorithm solves the radiative transfer equation by means of a Monte-Carlo simulation of individual energy particles. The simulation results are contrasted with envelope stacks of global teleseismic records.