The recently developed adjoint-state traveltime tomography (ATT) method offers an
alternative approach to conduct traveltime tomography without the need for ray tracing or …

We perform adjoint waveform tomography to reveal the P‐wave velocity structure of the crust
and uppermost mantle in Alaska by using common‐source double‐difference traveltime …

Water scarcity is a pressing issue in California. We develop ambient noise differential adjoint
tomography that improves the sensitivity to fluid-bearing rocks by canceling bias caused by …

Tong has proposed an adjoint-state traveltime tomography method to determine velocity
heterogeneity and azimuthal anisotropy. This method, however, ignores the Earth's …

Automatically picking reflection traveltimes from the prestack shot gathers and positioning
and updating the reflector depths during inversion are challenging in conventional eikonal …

Time-delay estimation is a critical step in many geophysical applications. Conventional
approaches are mainly based on the cross correlation of waveforms in time domain but …

In response to the need for high‐resolution imaging of shallow crustal structure, we present
a linear array double‐difference (DD) adjoint tomography method, using DD Rayleigh wave …

The quadratic Wasserstein metric has shown its power in measuring the difference between
probability densities, which benefits optimization objective function with better convexity and …