Accurate near-surface characterization and velocity model building are important for a
number of geotechnical and geophysical applications. 3D full waveform inversion (FWI) can …

In land seismic data processing, picking the first arrivals and imaging the near-surface
velocity structures are important tasks. However, in many areas, the near-surface weathering …

In near-surface velocity structure estimation, first-arrival traveltime tomography tends to
produce a smooth velocity model. If the shallow structures include a weathering layer over …

Multi-physics interpretation, based on seismic refraction tomography, transient
electromagnetic (TEM), and magnetotelluric (MT) can help overcome the challenges …

Recovering the subsurface physical properties for near-surface characterization and
reservoir monitoring using geophysical inversion remains challenging. For near-surface …

The cross-correlated forward and backward propagation wavefields at each time slice can
detect the moving wavepaths of an objective arrival at a certain receiver. However, the cross …

To analyze and define the role of primaries and multiples in seismic exploration, the M-
OSRP group has recently developed a first and new migration method with the capability to …