To improve seismic calibration for nuclear explosion monitoring, we use 3D sensitivity kernels of finite-frequency body and surface waves to develop models of the crustal and mantle structures beneath eastern Eurasia. We have collected and processed available broadband data from both permanent stations and temporary networks in eastern Eurasia. We obtained a regional P-wave velocity model for the mantle structures down to 1,500 km beneath the eastern Eurasia. We also ...
Seismic calibration for nuclear explosion monitoring requires accurate, high-resolution 3-D velocity models. Although seismic event locations have been improved recently using more accurate travel times measured by waveform cross-correlation, ray-based models and predictions are not strictly self-consistent with travel times measured by waveform cross-correlation, which are sensitive to 3-D velocity perturbations around the geometric ray paths. Finite-frequency seismic tomography (FFST), which utilizes the 3-D sensitivity kernels to determine the structure ...
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