Ranajit Ghose
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Articles (5)
Seismic incoherent noise and waves scattered from objects in the crossline directions can cause 2D elastic full-waveform inversion (FWI) to produce artifacts in the resulting 2D models. We develop a complete workflow that can determine subsurface S-wave velocity ([Formula: see text]) models inverted from 2D near-surface seismic data more stably. We make use of a combination of supervirtual interferometry and a matched filter to accurately retrieve dominant surface waves from the field data, whereas the incoherent noise and 3D scattering events are significantly suppressed. The subsurface structures obtained from inverting the retrieved data can be interpreted together with the sections resulting from FWI of the original data to mitigate the potential misinterpretation of artifacts. Our results demonstrate that it is possible to invert 2D near-surface seismic data even when the data quality is lowered by the presence of strong noise and 3D scattered events caused by objects located in the crossline direction.
Year:
2022
Year:
2021
Year:
2021
Year:
2020
Year:
2020
Collaborators (3)
Bento Caldeira
Universidade de Aveiro
Deyan Draganov
Delft University of Technology
Quentin Bourgeois
Associate professor
Leiden University
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