We develop a new scalar migration technique that is highly accurate for imaging steep dips in heterogeneous media. This method is based on arbitrarily wideangle wave equations (AWWEs) that are highly accurate space-domain one-way wave equations and have a form similar to the 15◦ equation. The accuracy of the proposed method is increased by introducing auxiliary variables, as well as adjusting t...

Abstract There has been much debate among scientists and philosophers about what it means for (hypothetical) interventions invoked in causal inference to be “well-defined” how considerations of this sort should constrain the choice variables. In paper, I propose that an intervention is well-defined just case effect interest well-defined, can serve as a suitable identify effect. Based on proposa...

Recently, the regularized functional matching pursuit (RFMP) was introduced as a greedy algorithm for linear ill-posed inverse problems. This algorithm incorporates the Tikhonov-Phillips regularization which implies the necessity of a parameter choice. In this paper, some known parameter choice methods are evaluated with respect to their performance in the RFMP and its enhancement, the regulari...