avo theory was introduced around 20 years ago. in recent years, this technique was become to a major tool in hydrocarbon sources exploration. by the help of this method with the suitable understanding from underground layers and knowing how to use this technology, quantitative specifications of reservoir can be recognized. avo analysis is a seismic technique that by using of pre-stack data, est...

This paper proposes a method to reduce seismogram variability as determining factor in its interpretation, processing, and clustering. By introducing the concept of single fluctuations (SFs), can be parsed into sequence random impulses with subsequent ordering. rearrangement SFs, if they are assigned by positive integers, represents formal mapping regular string integers one, which represented ...

In volcanic environments, the correct interpretation of signals recorded by a seismic station is critical for determination internal state volcano. Those contain information about both source and properties path travelled wave. Therefore, understanding effect necessary inversions geophysical investigation volcanoes' at depth. We present an application adjoint methodology sensitivity kernel anal...

SUMMARY To investigate the small-scale elastic structure of subsurface at length scales below resolution limits waveform tomography, envelopes high-frequency scattered seismic waveforms have been used with a variety approaches. However, rigorous framework for iterative inversion seismogram to image heterogeneity and attenuation comparable full (FWI) is missing. We present mathematical an envelo...

Stacks of global seismic data reveal the time and distance dependence of high-frequency (1-hertz) precursors to the seismic phase PKKP. Synthetic seismogram modeling shows that scattering from random small-scale topography at the PKKP core-mantle–boundary reflection point generates precursory arrivals similar to those seen in the data. Models with a root mean square core-mantle–boundary topogra...