The article describes a new approach to seismic modeling that combines calculations using traditional finite difference methods with the deep learning tools. Seismograms for training data set are calculated scheme high-quality spatial and temporal discretization. A numerical dispersion mitigation neural network is trained on dataset applied inaccurate seismograms raw grid large spacing. paper p...

Abstract Integrated Seismic Program (ISP) is a graphical user interface designed to facilitate and provide user-friendly framework for performing diverse common advanced tasks in seismological research. ISP composed of five main modules earthquake location, time–frequency analysis signal processing, implementation array techniques estimate the slowness vector, seismic moment tensor inversion, r...

In this research, we use high frequency waveform information to determine the focal mechanisms of small local earthquakes at an oil reservoir. During the waveform inversion, we maximize both the phase and amplitude matching between the observed and synthetic waveforms. In addition, we use the polarities of the first P-wave arrivals and the S/P amplitude ratios to better constrain the matching b...

S U M M A R Y We present a globally distributed data set of ∼400 000 frequency-dependent SH-wave traveltimes. An automated technique is used to measure teleseismic S, ScS and SS traveltimes at several periods ranging from 10 to 51 s. The targeted seismic phases are first extracted from the observed and synthetic seismograms using an automated time window algorithm. Traveltimes are then measured...

Ambient noise correlation is now widely used in seismology to obtain the surface 6 waves part of the Green's function. More difficult is the extraction of body waves from noise 7 correlations. Using 42 temporary broad-band three components stations located on the 8 northern part of fennoscandian region, we identify high frequency (0.5-2 Hz) body waves 9 emerging from noise correlations for inte...

Many commonly used shallow seismic sources are unacceptable for hazardous waste site investigations because they risk exhumation of contaminants in the soil, they add contaminants (e.g. lead) which are not allowed by regulations, or they add new migration paths for contaminants. Furthermore, recently developed high frequency vibrators for shallow investigations could be more effective at some s...

[1] Accurate determination of parameters about seismic discontinuities in the earth, such as their depth, existence, and strength, provides critical information about the physical and chemical states and dynamics of the earth’s interior. Unfortunately, those parameters can be strongly affected by factors that are not related to the discontinuities. We use synthetic seismograms to estimate the i...