This paper presents a new method of source-domain full traveltime inversion (FTI). The objective of this study is automatically building near-surface velocity using the early arrivals of seismic data. This method can generate the inverted velocity that can kinetically best match the reconstructed plane-wave source of early arrivals with true source in source domain. It does not require picking first arrivals for tomography, which is one of the most challenging aspects of ray-based tomographic inversion. Besides, this method does not need estimate the source wavelet, which is a necessity for receiver-domain wave-equation velocity inversion. Furthermore, we applied our method on one synthetic dataset; the results show our method could generate a reasonable background velocity even when shingling first arrivals exist and could provide a good initial velocity for the conventional full waveform inversion (FWI).
|Original language||English (US)|
|Title of host publication||International Geophysical Conference, Qingdao, China, 17-20 April 2017|
|Publisher||Society of Exploration Geophysicists|
|State||Published - May 31 2017|
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors would like to thank Saudi Arabian Oil Company (Saudi Aramco) for its support and permission to publish this paper. We also thank our colleagues Yan Wu and Yue Ma for many useful discussions.