Perseverance: Sound Has Two Diverse Speeds On Mars, Nasa Rover Finds Science & Tech El País English Edition
Probable cementing minerals—such as calcite, kaolinite, clay, and gypsum—affect seismic velocities. Wright’s team at Scripps Oceanography applied rock physics personal computer modeling to interpret the velocities derived from the InSight data. The distance to each target, which is returned by the instrument’s autofocus, is identified to an accuracy of ±0.five% (ref.8). The laser trigger time is known to a couple of microseconds and the shock wave becomes sonic just after 1 μs (ref.12), which is much less than .1% of…