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- W2997229677 abstract "Geoscientists and engineers are increasingly using denser arrays for continuous seismic monitoring, and they often turn to ambient seismic noise interferometry for low-cost near-surface imaging. Although ambient noise interferometry greatly reduces acquisition costs, the computational cost of pair-wise comparisons between all sensors can be prohibitively slow or expensive for applications in engineering and environmental geophysics. Double beamforming of noise correlation functions is a powerful technique to extract body waves from ambient noise, but it is typically performed via pair-wise comparisons between all sensors in two dense array patches (scaling as the product of the number of sensors in one patch with the number of sensors in the other patch). By rearranging the operations involved in the double beamforming transform, I have developed a new algorithm that scales as the sum of the number of sensors in two array patches. Compared to traditional double beamforming of noise correlation functions, the new method is more scalable, easily parallelized, and it does not require raw data to be exchanged between dense array patches." @default.
- W2997229677 created "2020-01-10" @default.
- W2997229677 creator A5032569616 @default.
- W2997229677 date "2021-01-01" @default.
- W2997229677 modified "2023-09-27" @default.
- W2997229677 title "A linear algorithm for ambient seismic noise double beamforming without explicit crosscorrelations" @default.
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- W2997229677 doi "https://doi.org/10.1190/geo2019-0847.1" @default.
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