For many years, reflections from the lowermost mantle have been observed and since the early 80s they have been interpreted as a reflector in the lowermost mantle, where velocity and density change.

Curved-ray prestack Kirchhoff time migration is rapidly replacing other seismic time migration methods for focusing seismic images of subsurface structures. For most geologic environments, curved-ray ...

Researchers report in Nature that an approach used for years to understand the structure of Earth's oceanic crust is flawed and geoscientists will have to reconsider the correspondence between seismic ...