Full-waveform adjoint tomography in a multiscale perspective

Yanhua O. Yuan*, Frederik J. Simons, Ebru Bozdag

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Kitap/Rapor/Konferans Bildirisinde BölümKonferans katkısıbilirkişi

Özet

We discuss an algorithm to regularize elastic waveform inversions using wavelet-based constructive approximations of the data, synthetic and observed, in models that evolve as part of a gradient-based iterative scheme relying on forward and adjoint modeling carried out with a spectral-element method. For an elastic Marmousi model we show how our wavelet-based multiscale waveform inversion proceeds successively from large to small scales in the seismograms, with a progressive increase of the complexity of the resulting model. We explore the sensitivity of surface waves in imaging shallow structure. To circumvent cycle skipping we designed an envelope-misfit function within a wavelet-multiscale framework. We test our approach in a toy model in preparation for inversions at full complexity.

Orijinal dilİngilizce
Ana bilgisayar yayını başlığıSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014
YayınlayanSociety of Exploration Geophysicists
Sayfalar1194-1199
Sayfa sayısı6
ISBN (Basılı)9781634394857
DOI'lar
Yayın durumuYayınlandı - 2014
Harici olarak yayınlandıEvet
EtkinlikSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014 - Denver, United States
Süre: 26 Eki 201431 Eki 2014

Yayın serisi

AdıSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014

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???event.eventtypes.event.conference???Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014
Ülke/BölgeUnited States
ŞehirDenver
Periyot26/10/1431/10/14

Bibliyografik not

Publisher Copyright:
© 2014 SEG.

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