Abstract. We have used several flooding-induced microseismic events that occurred in an abandoned mining area to image geological structures close the hypocentres vicinity of mine. The been located using a migration-based localization approach. recorded full waveforms these localized and processed passive source data as if they resulted from active sources at known hypocentre location origin ti...

The wide-angle screen propagator can be used for fast and accurate depth migration. In this study, we applied the method to the prestack depth migration of a complex 2D model. The model shows a number of challenging features to migration algorithms, e.g., strong velocity contrast and steep structures. Our results show that the wide angle algorithm gives good results in a complex model. We also ...

This study investigated English consonant identification by Greek listeners and the role of phonological short-term memory (PSTM) in listeners’ identification ability. Twenty Greek university students who had received formal instruction in English identified 24 English consonants (embedded in VCV syllables) presented in quiet and in two noise types, a competing talker at a signal-to-noise ratio...

The present study explored a possible interaction between distinct language processes and components of phonological short-term memory (pSTM) in a patient with a pSTM profile. Event-related brain potentials (ERPs) were recorded while HG and age-matched controls engaged in auditory and visual sentence correctness tasks. Stimulus onset asynchrony (SOA) was varied in the visual modality. Controls ...

I present a simple method for computing angle-domain Common Image Gather (CIG) using prestack reverse time migration. The proposed method is an extension of the method proposed by Rickett and Sava (2001) to compute CIGs by downward-continuation shotprofile migration. I demonstrate with a synthetic example the use of the CIG gathers for migration velocity updating. A challenge for imaging both o...

Wave-equation migration velocity analysis is based on the linear relation that can be established between a perturbation in the migrated image and the corresponding perturbation in the slowness function. Our method formulates an objective function in the image space, in contrast with other wave-equation tomography techniques which formulate objective functions in the data space. We iteratively ...