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Seismic waveform sensitivity to global boundary topography

Abstract:

We investigate the implications of lateral variations in the topography of global seismic discontinuities, in the framework of high-resolution forward modelling and seismic imaging. We run 3-D wave-propagation simulations accurate at periods of 10 s and longer, with Earth models including core-mantle boundary topography anomalies of ∼1000 km spatial wavelength and up to 10 km height. We obtain very different waveform signatures for PcP (reflected) and P diff (diffract...

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Authors


Colombi, A More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Giardini, D More by this author
Journal:
Geophysical Journal International
Volume:
191
Issue:
2
Pages:
832-848
Publication date:
2012-11-05
DOI:
EISSN:
1365-246X
ISSN:
0956-540X
URN:
uuid:eeab0225-ed8c-4fd8-8ac5-3942d41f4402
Source identifiers:
385413
Local pid:
pubs:385413

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