Abstract
We assembled approximately 328 seismic records. The data set was from 4 digitally recording long-period and broadband stations of CDSN. We carried out the inversion based on the partitioned waveform inversion (PWI). It partitions the large-scale optimization problem into a number of independent small-scale problems. We adopted surface waveform inversion with an equal block (2°×2°) discretization in order to acquire the images of shear velocity structure at different depths (from surface to 430 km) in the crust and upper-mantle. The resolution of all these anomalies has been established with “check-board” resolution tests. These results show significant difference in velocity, lithosphere and asthenosphere structure between South China Sea and its adjacent regions.
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Foundation item: State Natural Scientific Foundation (49734150) and National High Performance Computation Foundation.
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Cao, Xl., Zhu, Js., Zhao, Lf. et al. Three dimensional shear wave velocity structure of crust and upper mantle in South China Sea and its adjacent regions by surface waveform inversion. Acta Seimol. Sin. 14, 117–128 (2001). https://doi.org/10.1007/s11589-001-0142-z
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DOI: https://doi.org/10.1007/s11589-001-0142-z
Key words
- South China Sea
- surface waveform
- partitioned waveform inversion
- three dimension
- shear wave velocity structure