Comparison of 2-D and 3-D full waveform inversion imaging using wide-angle seismic data from the Deep Galicia Margin

Automating Seismic Waveform Analysis For Full 3-D Waveform Inversions

Full waveform inversion of crosswell seismic data using automatic differentiation

Full waveform inversion (FWI) is an effective and efficient data-fitting technique that has been widely used to produce accurate estimation of model parameters in Geophysics. The efficiency and accuracy of FWI are determined by the three main components: numerical solution for forward problem, gradient calculation and model update which usually involves the optimization method. The success of t...

Imaging paleoslabs in the D″ layer beneath Central America and the Caribbean using seismic waveform inversion

D″ (Dee double prime), the lowermost layer of the Earth's mantle, is the thermal boundary layer (TBL) of mantle convection immediately above the Earth's liquid outer core. As the origin of upwelling of hot material and the destination of paleoslabs (downwelling cold slab remnants), D″ plays a major role in the Earth's evolution. D″ beneath Central America and the Caribbean is of particular geod...

Full waveform seismic inversion using a distributed system of computers

The aim of seismic waveform inversion is to estimate the elastic properties of the Earth’s subsurface layers from recordings of seismic waveform data. This is usually accomplished by using constrained optimization often based on very simplistic assumptions. Full waveform inversion uses a more accurate wave propagation model but is extremely difficult to use for routine analysis and interpretati...

Full 3-D inversion of electromagnetic data on PC

Ž . Ž . Three-dimensional 3-D electromagnetic EM inversion might be believed to require high-performance computers. Ž . However, with the rapid progress of recent computer technology, running 3-D inversions on personal computers PC is becoming a rational choice. This paper describes an attempt to carry out full 3-D inversions of synthetic frequency-domain EM data on a PC. In the inversion, a st...