1. Why the seismic velocities increase abruptly in the upper mantle?

2. What makes the Olivine to change into other minerals in the deep subsurface?

3. What do you think the objective of this paper?

4.  In this paper, author used Pds. What is it?

5. What the authors used to study the discontinuities near the Tonga subduction zone?

6. What is the objective of this study?

7. What are the authors observations of the seismic discontinuities within the region of the Tonga slab consistent with?

Questions or Comments?
Contact: Dr. Ali O. Oncel