Question
In one technique, traces of these phenomena recorded at regularly spaced offsets are collected into a common midpoint gather. Adam Dziewoński (“zhuh-VON-skee”) and Don Anderson used observations of these phenomena and astronomical measurements to develop the PREM (“P-R-E-M”), which calculates density from the velocity of these phenomena using the Adams–Williamson equation. Primordial thermochemical piles are one of many proposed mechanisms for the strange behavior of these phenomena at antipodal (“an-TIH-puh-dal”) regions near Africa and the Pacific ocean called LLSVPs. Images reconstructed using these phenomena confirmed the natural formation of post-perovskite. The velocities of these phenomena change abruptly at a depth of 660 kilometers, below which ringwoodite decomposes, as well as at the Moho discontinuity. For 10 points, name these phenomena whose propagation is used to study the Earth’s interior. ■END■
Buzzes
Player | Team | Opponent | Buzz Position | Value |
---|---|---|---|---|
Alex Li | Georgia Tech A | Chicago A | 47 | 10 |