Full Waveform Inversion

migS_cropFull waveform inversion (FWI) is a seismic imaging technique pioneered by  Patrick Lailly and Albert Tarantola in the early 1980’s.  The method estimates earth model structure by seeking to match predicted waveforms (synthetic seismograms) to observed waveforms  `wiggle for wiggle.’  Hence, if one can capture the physics of wave propagation and apply that to the true Earth model, then one can exactly represent a recorded seismic waveform down to the noise level. While conceptually straightforward, application of FWI to real data sets would have to wait a couple decades for compute resources to evolve.


Because of the democratization of high performance computing,FWI now has permeated to all facets of seismology and is successfully applied at all scales, from short period active source reflection and refraction surveys to long period tectonic scale earth investigations. Because synthetic waveform modeling is the crux of the method all FWI methods can be aided with massively parallel forward solvers that can operate in the time or frequency domain on two dimensional or three dimensional data. Moreover, as hardware continues to improve it is now finally possible to model and estimate the complete anisotropic and attenuating subsurface.  With all these tools at hand let ISTI design a solution that fits your data, timeline, and budget.  We can handle the end to end solution from data collection to initial model estimation to high resolution short period FWI thereby allowing you to extract the maximum amount of detail from your seismic acquisition regardless of the target size.